{"id":866,"date":"2017-03-21T12:21:51","date_gmt":"2017-03-21T12:21:51","guid":{"rendered":"http:\/\/bear-hearing.dk\/?page_id=866"},"modified":"2020-08-14T08:48:20","modified_gmt":"2020-08-14T08:48:20","slug":"populations-with-low-benefit","status":"publish","type":"page","link":"https:\/\/bear-hearing.dk\/da\/work-areas\/populations-with-low-benefit\/","title":{"rendered":"Brugere med d\u00e5rligt udbytte \u2013 Arbejdsomr\u00e5der"},"content":{"rendered":"

Arbejdsomr\u00e5der<\/h3>\t\t\t
Projektet havde otte arbejdsomr\u00e5der, som blev aktiveret l\u00f8bende. De f\u00f8rste tre omr\u00e5der var aktive ved projektets start og vedr\u00f8rte studier af eksisterende praksis og pilot tests af nye metoder. De n\u00e6ste to omr\u00e5der startede senere i projektet og skulle afpr\u00f8ve og vurdere nye strategier. De sidste to omr\u00e5der havde til form\u00e5l at tilpasse de mest lovende metoder til klinisk praksis og vurdere potentialet for anvendelsen i brugerstyrede forl\u00f8b. Endelig var der et arbejdsomr\u00e5de, som havde til form\u00e5l at oms\u00e6tte resultaterne til evt. nye retningslinjer og nye standarder.<\/div>\n\t\t<\/div><\/div><\/div>
<\/div><\/div><\/div>
\t\t\t

Brugere med d\u00e5rligt udbytte<\/h2><\/div>\n\t\t<\/div>
\n\n
\n\t\"\"\n<\/div>\n\n<\/div><\/div><\/div><\/div>
\t\t\t

Ind imellem er der patienter med h\u00f8reproblemer, som tilsyneladende ingen gevinst har af en h\u00f8reapparat behandling. Der er ogs\u00e5 patienter i de audiologiske klinikker, som oplever h\u00f8reproblemer, men hvor det ikke er indlysende fra de grundl\u00e6ggende h\u00f8retests, at l\u00f8sningen er et h\u00f8reapparat. For disse brugere kan der v\u00e6re meget lidt at g\u00f8re, men de kan muligvis l\u00e6re os mere om kompleksiteten i problemstillingerne, og hvordan h\u00f8relsen fungerer.<\/p><\/div>\n\t\t<\/div><\/div><\/div><\/div><\/div><\/div><\/div>

\t\t\t

Personer<\/h2><\/div>\n\t\t<\/div>
\n\n
\n\t\"\"\n<\/a><\/div>\n\n<\/div><\/div><\/div>
\n
\n\t
Dorte Hammersh\u00f8i<\/b><\/a><\/div>\r\nProfessor\r\nAalborg Universitet\n<\/div>\n<\/div><\/div><\/div><\/div>
\n\n
\n\t\"\"\n<\/a><\/div>\n\n<\/div><\/div><\/div>
\n
\n\t
Sreeram Kaithali Narayanan<\/b><\/a><\/div>\r\nPhD studerende\r\nAalborg Universitet\n<\/div>\n<\/div><\/div><\/div><\/div>
\n\n
\n\t\"\"\n<\/a><\/div>\n\n<\/div><\/div><\/div>
\n
\n\t
Tobias Neher<\/b><\/a><\/div>\r\nLektor\r\nSyddansk Universitet\n<\/div>\n<\/div><\/div><\/div><\/div>
\n\n
\n\t\"\"\n<\/a><\/div>\n\n<\/div><\/div><\/div>
\n
\n\t
Michal Fereczkowski<\/b><\/a><\/div>\r\nPost Doc\r\nSyddansk Universitet\n<\/div>\n<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div>

Ressourcer<\/h3>\t\t\t
<\/div>\n\t\t<\/div>
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Publikationer<\/h4>\n
<\/a><\/form>\r\n \r\n \r\n \r\n \r\n \r\n
\r\n

2024<\/h3>\r\n <\/td>\r\n <\/tr>

Fereczkowski, Michal; Sanchez-Lopez, Raul H; Christiansen, Stine; Neher, Tobias<\/p>

Amplitude Compression for Preventing Rollover at Above-Conversational Speech Levels<\/a> Journal Article<\/span> <\/p>

Trends in Hearing, <\/span>28 <\/span>, 2024<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{Michal2024,
\r\ntitle = {Amplitude Compression for Preventing Rollover at Above-Conversational Speech Levels},
\r\nauthor = {Michal Fereczkowski and Raul H Sanchez-Lopez and Stine Christiansen and Tobias Neher},
\r\ndoi = {10.1177\/23312165231224597},
\r\nyear = {2024},
\r\ndate = {2024-01-08},
\r\njournal = {Trends in Hearing},
\r\nvolume = {28},
\r\nabstract = {Hearing aids provide nonlinear amplification to improve speech audibility and loudness perception. While more audibility typically increases speech intelligibility at low levels, the same is not true for above-conversational levels, where decreases in intelligibility (\u201crollover\u201d) can occur. In a previous study, we found rollover in speech intelligibility measurements made in quiet for 35 out of 74 test ears with a hearing loss. Furthermore, we found rollover occurrence in quiet to be associated with poorer speech intelligibility in noise as measured with linear amplification. Here, we retested 16 participants with rollover with three amplitude-compression settings. Two were designed to prevent rollover by applying slow- or fast-acting compression with a 5:1 compression ratio around the \u201csweet spot,\u201d that is, the area in an individual performance-intensity function with high intelligibility and listening comfort. The third, reference setting used gains and compression ratios prescribed by the \u201cNational Acoustic Laboratories Non-Linear 1\u201d rule. Speech intelligibility was assessed in quiet and in noise. Pairwise preference judgments were also collected. For speech levels of 70\u2005dB SPL and above, slow-acting sweet-spot compression gave better intelligibility in quiet and noise than the reference setting. Additionally, the participants clearly preferred slow-acting sweet-spot compression over the other settings. At lower levels, the three settings gave comparable speech intelligibility, and the participants preferred the reference setting over both sweet-spot settings. Overall, these results suggest that, for listeners with rollover, slow-acting sweet-spot compression is beneficial at 70\u2005dB SPL and above, while at lower levels clinically established gain targets are more suited.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Hearing aids provide nonlinear amplification to improve speech audibility and loudness perception. While more audibility typically increases speech intelligibility at low levels, the same is not true for above-conversational levels, where decreases in intelligibility (\u201crollover\u201d) can occur. In a previous study, we found rollover in speech intelligibility measurements made in quiet for 35 out of 74 test ears with a hearing loss. Furthermore, we found rollover occurrence in quiet to be associated with poorer speech intelligibility in noise as measured with linear amplification. Here, we retested 16 participants with rollover with three amplitude-compression settings. Two were designed to prevent rollover by applying slow- or fast-acting compression with a 5:1 compression ratio around the \u201csweet spot,\u201d that is, the area in an individual performance-intensity function with high intelligibility and listening comfort. The third, reference setting used gains and compression ratios prescribed by the \u201cNational Acoustic Laboratories Non-Linear 1\u201d rule. Speech intelligibility was assessed in quiet and in noise. Pairwise preference judgments were also collected. For speech levels of 70\u2005dB SPL and above, slow-acting sweet-spot compression gave better intelligibility in quiet and noise than the reference setting. Additionally, the participants clearly preferred slow-acting sweet-spot compression over the other settings. At lower levels, the three settings gave comparable speech intelligibility, and the participants preferred the reference setting over both sweet-spot settings. Overall, these results suggest that, for listeners with rollover, slow-acting sweet-spot compression is beneficial at 70\u2005dB SPL and above, while at lower levels clinically established gain targets are more suited.<\/div>

Close<\/a><\/p><\/div>

\r\n

2023<\/h3>\r\n <\/td>\r\n <\/tr>

Narayanan, Sreeram Kaithali; Rye, Palle; Houm\u00f8ller, Sabina Storbjerg; Wolff, Anne; Hougaard, Dan Dupont; Gaihede, Michael; Hammersh\u00f8i, Dorte<\/p>

Difference in SII provided by initial fit and NAL-NL2 and its relation to self-reported hearing aid outcomes<\/a> Journal Article<\/span> <\/p>

International Journal of Audiology, <\/span>pp. 1-8, <\/span>2023<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{SKN_SII,
\r\ntitle = {Difference in SII provided by initial fit and NAL-NL2 and its relation to self-reported hearing aid outcomes},
\r\nauthor = {Sreeram Kaithali Narayanan and Palle Rye and Sabina Storbjerg Houm\u00f8ller and Anne Wolff and Dan Dupont Hougaard and Michael Gaihede and Dorte Hammersh\u00f8i},
\r\ndoi = {10.1080\/14992027.2023.2291633},
\r\nyear = {2023},
\r\ndate = {2023-12-19},
\r\njournal = {International Journal of Audiology},
\r\npages = {1-8},
\r\nabstract = {Objective
\r\nThe speech intelligibility index (SII) is used to quantify the audibility of the speech. This study examined the relationship between self-reported hearing aid (HA) outcomes and the difference in aided SII (SIIA) calculated from the initial fit (IF) gain and that prescribed as per the second generation of National Acoustic Laboratory Non-Linear (NAL-NL2).
\r\n
\r\nDesign
\r\nA prospective observational study.
\r\n
\r\nStudy sample
\r\nThe study included 718 first-time and 253 experienced HA users. All users had a valid real-ear measurement (REM) at three input levels (55, 65 and 80\u2009dB SPL).
\r\n
\r\nResults
\r\nThe gain provided by IF was lower than NAL-NL2 at 55 and 65\u2009dB SPL. IF gain exhibited reduced compression than NAL-NL2 as input levels increased from 55 to 80\u2009dB SPL. On average, the SIIA provided by IF was significantly lower than that for NAL-NL2 at all input levels. The difference in SIIA between IF and NAL-NL2 at 80\u2009dB SPL input level with 0\u2009dB signal-to-noise ratio (SNR) turned out to be a predictor for self-reported outcome for first-time HA users.
\r\n
\r\nConclusion
\r\nThe study suggests that an SIIA close to that provided by NAL-NL2 at high input levels would be preferred to obtain a better self-reported outcome.\u2003},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Houm\u00f8ller, Sabina Storbjerg; Tsai, Li-Tang; Wolff, Anne; Narayanan, Sreeram Kaithali; Hougaard, Dan Dupont; Gaihede, Michael; Hammersh\u00f8i, Dorte; Godballe, Christian; Schmidt, Jesper Hvass<\/p>

A history of occupational noise exposure is associated with steep-slope audiograms and poorer self-reported hearing-aid outcomes<\/a> Journal Article<\/span> <\/p>

International Journal of Audiology, <\/span>2023<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{sabina_noise,
\r\ntitle = {A history of occupational noise exposure is associated with steep-slope audiograms and poorer self-reported hearing-aid outcomes},
\r\nauthor = {Sabina Storbjerg Houm\u00f8ller and Li-Tang Tsai and Anne Wolff and Sreeram Kaithali Narayanan and Dan Dupont Hougaard and Michael Gaihede and Dorte Hammersh\u00f8i and Christian Godballe and Jesper Hvass Schmidt},
\r\nurl = {https:\/\/doi.org\/10.1080\/14992027.2023.2272558},
\r\ndoi = {10.1080\/14992027.2023.2272558},
\r\nyear = {2023},
\r\ndate = {2023-11-01},
\r\njournal = {International Journal of Audiology},
\r\nabstract = {Objective
\r\nTo investigate the effects of previous occupational noise exposure in older adults with hearing loss on (1) audiometric configuration and acoustic reflex (AR) thresholds and (2) self-reported hearing abilities and hearing aid (HA) effectiveness.
\r\n
\r\nDesign
\r\nA prospective observational study.
\r\n
\r\nStudy sample
\r\nThe study included 1176 adults (\u226560\u2009years) with bilateral sensorineural hearing loss. Pure-tone audiometry, AR thresholds, and responses to the abbreviated version of the Speech, Spatial, and Qualities of Hearing Scale (SSQ12) and the International Outcome Inventory for Hearing Aids (IOI-HA) questionnaire were obtained, along with information about previous occupational noise exposure.
\r\n
\r\nResults
\r\nGreater occupational noise exposure was associated with a higher prevalence of steeply sloping audiograms in men and women and a 0.32 (95% CI: \u22120.57; \u22120.06) scale points lower mean SSQ12 total score among noise-exposed men. AR thresholds did not show a significant relation to noise-exposure status, but hearing thresholds at a given frequency were related to elevated AR thresholds at the same frequency.
\r\n
\r\nConclusions
\r\nA noise exposure history is linked to steeper audiograms in older adults with hearing loss as well as to poorer self-reported hearing abilities in noise-exposed men. More attention to older adults with previous noise exposure is warranted in hearing rehabilitation.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Objective
\r\nTo investigate the effects of previous occupational noise exposure in older adults with hearing loss on (1) audiometric configuration and acoustic reflex (AR) thresholds and (2) self-reported hearing abilities and hearing aid (HA) effectiveness.
\r\n
\r\nDesign
\r\nA prospective observational study.
\r\n
\r\nStudy sample
\r\nThe study included 1176 adults (\u226560\u2009years) with bilateral sensorineural hearing loss. Pure-tone audiometry, AR thresholds, and responses to the abbreviated version of the Speech, Spatial, and Qualities of Hearing Scale (SSQ12) and the International Outcome Inventory for Hearing Aids (IOI-HA) questionnaire were obtained, along with information about previous occupational noise exposure.
\r\n
\r\nResults
\r\nGreater occupational noise exposure was associated with a higher prevalence of steeply sloping audiograms in men and women and a 0.32 (95% CI: \u22120.57; \u22120.06) scale points lower mean SSQ12 total score among noise-exposed men. AR thresholds did not show a significant relation to noise-exposure status, but hearing thresholds at a given frequency were related to elevated AR thresholds at the same frequency.
\r\n
\r\nConclusions
\r\nA noise exposure history is linked to steeper audiograms in older adults with hearing loss as well as to poorer self-reported hearing abilities in noise-exposed men. More attention to older adults with previous noise exposure is warranted in hearing rehabilitation.<\/div>

Close<\/a><\/p><\/div>

Narayanan, Sreeram Kaithali; Houm\u00f8ller, Sabina Storbjerg; Wolff, Anne; Hougaard, Dan Dupont; Gaihede, Michael; Schmidt, Jesper Hvass; Hammersh\u00f8i, Dorte<\/p>

Adapting to New Hearing Aids and Hearing Aid Adjustments in Adult Danish Users<\/a> Journal Article<\/span> <\/p>

American Journal of Audiology, <\/span>32 <\/span>(3), <\/span>pp. 526-542, <\/span>2023<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{skn_aja,
\r\ntitle = {Adapting to New Hearing Aids and Hearing Aid Adjustments in Adult Danish Users},
\r\nauthor = {Sreeram Kaithali Narayanan and Sabina Storbjerg Houm\u00f8ller and Anne Wolff and Dan Dupont Hougaard and Michael Gaihede and Jesper Hvass Schmidt and Dorte Hammersh\u00f8i},
\r\nurl = {https:\/\/doi.org\/10.1044\/2023_AJA-23-00030},
\r\ndoi = {10.1044\/2023_AJA-23-00030},
\r\nyear = {2023},
\r\ndate = {2023-07-14},
\r\njournal = {American Journal of Audiology},
\r\nvolume = {32},
\r\nnumber = {3},
\r\npages = {526-542},
\r\nabstract = {Purpose: This study was aimed at understanding the effect of time taken to adapt to the new hearing aids (HAs) and the timeline of HA adjustments performed over more than a year of rehabilitation on self-reported HA outcomes.
\r\nMethod: A self-report of the time it took to get accustomed to the new HAs and adjustment of the HAs during a year of rehabilitation collected from 690 HA users using a nonstandardized questionnaire were analyzed. The abbreviated version of the Speech, Spatial, and Quality of Hearing questionnaire and the International Outcome Inventory for Hearing Aids were used as the self-reported HA outcome.
\r\nResult: Out of 690 participants, 442 (64%) got accustomed to HAs within 2 months. Ninety-one participants (13%) did not get accustomed to the HAs at all, out of which 74 (81%) were first-time HA users. Eighty-four participants (12%) did not receive any HA adjustments after their initial fitting, and 49 (7%) had their HAs adjusted four or more times during the 1 year of rehabilitation. Three hundred ninety (57%) participants got their HA adjusted only at the 2-month follow-up visit, showing the intent to adjust given an opportunity. The stepwise multiple linear regression results showed the significant impact of getting accustomed to the HA and having HA adjusted at multiple instances on the self-reported HA outcomes.
\r\nConclusion: This study showed the importance of getting accustomed to the HA and having a minimal number of adjustments to have a better long-term self-reported HA outcome.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Purpose: This study was aimed at understanding the effect of time taken to adapt to the new hearing aids (HAs) and the timeline of HA adjustments performed over more than a year of rehabilitation on self-reported HA outcomes.
\r\nMethod: A self-report of the time it took to get accustomed to the new HAs and adjustment of the HAs during a year of rehabilitation collected from 690 HA users using a nonstandardized questionnaire were analyzed. The abbreviated version of the Speech, Spatial, and Quality of Hearing questionnaire and the International Outcome Inventory for Hearing Aids were used as the self-reported HA outcome.
\r\nResult: Out of 690 participants, 442 (64%) got accustomed to HAs within 2 months. Ninety-one participants (13%) did not get accustomed to the HAs at all, out of which 74 (81%) were first-time HA users. Eighty-four participants (12%) did not receive any HA adjustments after their initial fitting, and 49 (7%) had their HAs adjusted four or more times during the 1 year of rehabilitation. Three hundred ninety (57%) participants got their HA adjusted only at the 2-month follow-up visit, showing the intent to adjust given an opportunity. The stepwise multiple linear regression results showed the significant impact of getting accustomed to the HA and having HA adjusted at multiple instances on the self-reported HA outcomes.
\r\nConclusion: This study showed the importance of getting accustomed to the HA and having a minimal number of adjustments to have a better long-term self-reported HA outcome.<\/div>

Close<\/a><\/p><\/div>

Fereczkowski, Michal; Neher, Tobias<\/p>

Semantic Context Can Mask Intelligibility Declines at Above-Conversational Speech Levels in Normal-Hearing Listeners<\/a> Journal Article<\/span> <\/p>

Journal of Speech, Language, and Hearing Research, <\/span>pp. 1,7, <\/span>2023<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

Narayanan, Sreeram Kaithali; Houm\u00f8ller, Sabina Storbjerg; Wolff, Anne; Lund, Katja; M\u00f6ller, S\u00f6ren; Hougaard, Dan Dupont; Gaihede, Michael; Schmidt, Jesper Hvass; Hammersh\u00f8i, Dorte<\/p>

Self-Reported Hearing-Aid Use Patterns in an Adult Danish Population<\/a> Journal Article<\/span> <\/p>

Audiological Research, <\/span>13 <\/span>(2), <\/span>pp. 221-235, <\/span>2023<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{AR2023SKN,
\r\ntitle = {Self-Reported Hearing-Aid Use Patterns in an Adult Danish Population},
\r\nauthor = {Sreeram Kaithali Narayanan and Sabina Storbjerg Houm\u00f8ller and Anne Wolff and Katja Lund and S\u00f6ren M\u00f6ller and Dan Dupont Hougaard and Michael Gaihede and Jesper Hvass Schmidt and Dorte Hammersh\u00f8i},
\r\nurl = {https:\/\/doi.org\/10.3390\/audiolres13020021},
\r\ndoi = {10.3390\/audiolres13020021},
\r\nyear = {2023},
\r\ndate = {2023-03-27},
\r\njournal = {Audiological Research},
\r\nvolume = {13},
\r\nnumber = {2},
\r\npages = {221-235},
\r\nabstract = {The retrospective reporting of users\u2019 hearing aid (HA) usage can provide insight into individualized HA usage patterns. Understanding these HA usage patterns can help to provide a tailored solution to meet the usage needs of HA users. This study aims to understand the HA usage pattern in daily-life situations from self-reported data and to examine its relationship to self-reported outcomes. A total of 1537 participants who responded to questions related to situations where they always took off or put on the HAs were included in the study. A latent class analysis was performed to stratify the HA users according to their HA usage pattern. The results showed distinct usage patterns in the latent classes derived for both scenarios. The demographics, socio-economic indicators, hearing loss, and user-related factors were found to impact HA usage. The results showed that the HA users who reported using the HAs all the time (regular users) had better self-reported HA outcomes than situational users, situational non-users, and non-users. The study explained the underlying distinct HA usage pattern from self-reported questionnaires using latent class analysis. The results emphasized the importance of regular use of HAs for a better self-reported HA outcome},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

\r\n

2022<\/h3>\r\n <\/td>\r\n <\/tr>

Fereczkowski, Michal; Neher, Tobias<\/p>

Predicting Aided Outcome With Aided Word Recognition Scores Measured With Linear Amplification at Above-conversational Levels<\/a> Journal Article<\/span> <\/p>

Ear and Hearing, <\/span>44 <\/span>(1), <\/span>pp. 155-166, <\/span>2022<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

Wu, Mengfan; Christiansen, Stine; Fereczkowski, Michal; Neher, Tobias<\/p>

Revisiting Auditory Profiling: Can Cognitive Factors Improve the Prediction of Aided Speech-in-Noise Outcome?<\/a> Journal Article<\/span> <\/p>

Trends in Hearing, <\/span>26 <\/span>, pp. 1-16, <\/span>2022<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{Mengfan_congnitive,
\r\ntitle = {Revisiting Auditory Profiling: Can Cognitive Factors Improve the Prediction of Aided Speech-in-Noise Outcome?},
\r\nauthor = {Mengfan Wu and Stine Christiansen and Michal Fereczkowski and Tobias Neher},
\r\ndoi = {10.1177\/23312165221113889},
\r\nyear = {2022},
\r\ndate = {2022-06-21},
\r\njournal = {Trends in Hearing},
\r\nvolume = {26},
\r\npages = {1-16},
\r\nabstract = {Hearing aids (HA) are the most common type of rehabilitation treatment for age-related hearing loss. However, HA users often obtain limited benefit from their devices, particularly in noisy environments, and thus many HA candidates do not use them at all. A possible reason for this could be that current HA fittings are audiogram-based, that is, they neglect supra-threshold factors. In an earlier study, an auditory-profiling method was proposed as a basis for more personalized HA fittings. This method classifies HA users into four profiles that differ in terms of hearing sensitivity and supra-threshold hearing abilities. Previously, HA users belonging to these profiles showed significant differences in terms of speech recognition in noise but not subjective assessments of speech-in-noise (SIN) outcome. Moreover, large individual differences within some profiles were observed. The current study therefore explored if cognitive factors can help explain these differences and improve aided outcome prediction. Thirty-nine older HA users completed sets of auditory and SIN tests as well as two tablet-based cognitive measures (the Corsi block-tapping and trail-making tests). Principal component analyses were applied to extract the dominant sources of variance both within individual tests producing many variables and within the three types of tests. Multiple linear regression analyses performed on the extracted components showed that auditory factors were related to aided speech recognition in noise but not to subjective SIN outcome. Cognitive factors were unrelated to aided SIN outcome. Overall, these findings provide limited support for adding those two cognitive tests to the profiling of HA users.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Hearing aids (HA) are the most common type of rehabilitation treatment for age-related hearing loss. However, HA users often obtain limited benefit from their devices, particularly in noisy environments, and thus many HA candidates do not use them at all. A possible reason for this could be that current HA fittings are audiogram-based, that is, they neglect supra-threshold factors. In an earlier study, an auditory-profiling method was proposed as a basis for more personalized HA fittings. This method classifies HA users into four profiles that differ in terms of hearing sensitivity and supra-threshold hearing abilities. Previously, HA users belonging to these profiles showed significant differences in terms of speech recognition in noise but not subjective assessments of speech-in-noise (SIN) outcome. Moreover, large individual differences within some profiles were observed. The current study therefore explored if cognitive factors can help explain these differences and improve aided outcome prediction. Thirty-nine older HA users completed sets of auditory and SIN tests as well as two tablet-based cognitive measures (the Corsi block-tapping and trail-making tests). Principal component analyses were applied to extract the dominant sources of variance both within individual tests producing many variables and within the three types of tests. Multiple linear regression analyses performed on the extracted components showed that auditory factors were related to aided speech recognition in noise but not to subjective SIN outcome. Cognitive factors were unrelated to aided SIN outcome. Overall, these findings provide limited support for adding those two cognitive tests to the profiling of HA users.<\/div>

Close<\/a><\/p><\/div>

Narayanan, Sreeram Kaithali; Rye, Palle; Piechowiak, Tobias; Ravn, Gert; Wolff, Anne; Houm\u00f8ller, Sabina Storbjerg; Schmidt, Jesper Hvass; Hammersh\u00f8i, Dorte<\/p>

Can real-ear insertion gain deviations from generic fitting prescriptions predict self-reported outcomes?<\/a> Journal Article<\/span> <\/p>

The International Journal of Audiology, <\/span>62 <\/span>(5), <\/span>pp. 433-441, <\/span>2022<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{TIJA_SKN_J1,
\r\ntitle = {Can real-ear insertion gain deviations from generic fitting prescriptions predict self-reported outcomes?},
\r\nauthor = {Sreeram Kaithali Narayanan and Palle Rye and Tobias Piechowiak and Gert Ravn and Anne Wolff and Sabina Storbjerg Houm\u00f8ller and Jesper Hvass Schmidt and Dorte Hammersh\u00f8i},
\r\nurl = {https:\/\/doi.org\/10.1080\/14992027.2022.2053594},
\r\ndoi = {10.1080\/14992027.2022.2053594},
\r\nyear = {2022},
\r\ndate = {2022-04-07},
\r\njournal = {The International Journal of Audiology},
\r\nvolume = {62},
\r\nnumber = {5},
\r\npages = {433-441},
\r\nabstract = {Objective
\r\nThe aim of this study was to determine whether the differences in insertion gains from the first fit to generic prescriptions of hearing aids can predict the self-reported hearing aid (HA) outcomes for first-time and experienced HA users.
\r\n
\r\nDesign
\r\nThis was a prospective observational study.
\r\n
\r\nStudy Sample
\r\nThe study included 885 first-time and 330 experienced HA users with a valid real-ear measurement on both ears and answers to the abbreviated version of the Speech, Spatial, and Quality of Hearing (SSQ12) and the International Outcome Inventory for Hearing Aids (IOI-HA) questionnaires.
\r\n
\r\nResults
\r\nK-means clustering of gain differences between individual real-ear insertion gain to three generic gain prescriptions (NAL-NL2, NAL-RP, and one-third gain rules) was performed. The gain difference at higher frequencies generally differentiated the clusters. The experienced users in the cluster with fittings closest to NAL-NL2 and NAL-RP prescription were found to exhibit a higher IOI-HA Factor 1 score (representing the overall benefit of the hearing aid use). The gain differences to generic prescription did not affect other self-reported outcomes for first-time and experienced HA users.
\r\n
\r\nConclusion
\r\nThe experienced HA users with minimal gain deviations from generic prescriptions reported better self-perceived benefits than users with larger deviations. However, this was not apparent in first-time users.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Objective
\r\nThe aim of this study was to determine whether the differences in insertion gains from the first fit to generic prescriptions of hearing aids can predict the self-reported hearing aid (HA) outcomes for first-time and experienced HA users.
\r\n
\r\nDesign
\r\nThis was a prospective observational study.
\r\n
\r\nStudy Sample
\r\nThe study included 885 first-time and 330 experienced HA users with a valid real-ear measurement on both ears and answers to the abbreviated version of the Speech, Spatial, and Quality of Hearing (SSQ12) and the International Outcome Inventory for Hearing Aids (IOI-HA) questionnaires.
\r\n
\r\nResults
\r\nK-means clustering of gain differences between individual real-ear insertion gain to three generic gain prescriptions (NAL-NL2, NAL-RP, and one-third gain rules) was performed. The gain difference at higher frequencies generally differentiated the clusters. The experienced users in the cluster with fittings closest to NAL-NL2 and NAL-RP prescription were found to exhibit a higher IOI-HA Factor 1 score (representing the overall benefit of the hearing aid use). The gain differences to generic prescription did not affect other self-reported outcomes for first-time and experienced HA users.
\r\n
\r\nConclusion
\r\nThe experienced HA users with minimal gain deviations from generic prescriptions reported better self-perceived benefits than users with larger deviations. However, this was not apparent in first-time users.<\/div>

Close<\/a><\/p><\/div>

\r\n

2020<\/h3>\r\n <\/td>\r\n <\/tr>

Narayanan, Sreeram Kaithali; Piechowiak, Tobias; Wolff, Anne; Houm\u00f8ller, Sabina Storbjerg; Narne, Vijaya K; Loquet, G\u00e9rard; Hougaard, Dan Dupont; Gaihede, Michael; Schmidt, Jesper Hvass; Hammersh\u00f8i, Dorte<\/p>

Speech related hearing aid benefit index derived from standardized self-reported questionnaire data<\/a> Inproceedings<\/span> <\/p>

Kressner, Abigail Anne; Regev, Jonathan; Christensen-Dalsgaard, Jakob; Tranebj\u00e6rg, Lisbeth; Santurette, S\u00e9bastien; Dau, Torsten (Ed.): Proceedings of the International Symposium on Auditory and Audiological Research, <\/span>2020<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@inproceedings{ISAAR2019_sreeram_print,
\r\ntitle = {Speech related hearing aid benefit index derived from standardized self-reported questionnaire data},
\r\nauthor = {Sreeram Kaithali Narayanan and Tobias Piechowiak and Anne Wolff and Sabina Storbjerg Houm\u00f8ller and Vijaya K. Narne and G\u00e9rard Loquet and Dan Dupont Hougaard and Michael Gaihede and Jesper Hvass Schmidt and Dorte Hammersh\u00f8i},
\r\neditor = {Abigail Anne Kressner and Jonathan Regev and Jakob Christensen-Dalsgaard and Lisbeth Tranebj\u00e6rg and S\u00e9bastien Santurette and Torsten Dau },
\r\nurl = {https:\/\/proceedings.isaar.eu\/index.php\/isaarproc\/article\/view\/2019-45},
\r\nyear = {2020},
\r\ndate = {2020-04-14},
\r\nbooktitle = {Proceedings of the International Symposium on Auditory and Audiological Research},
\r\nvolume = {7},
\r\nabstract = {Speech understanding in noisy environments has been the most desired hearing-aid (HA) benefit sought by HA users. This paper examines the possibility of developing a speech-related HA benefit index from the speech- related questions in the self-reported questionnaire data. One question from Health-Related Quality of Life (HRQoL) instrument 15D and nine questions from the Speech, Spatial and Qualities of Hearing Scale (SSQ) having a direct implication to speech were selected for the analysis. After applying weights relevant to 15D, a delta of base-line (prior to HA fitting) and follow-up (two months after the initial fitting) responses to the selected questions were determined. A principal component analysis (PCA) was performed on the scaled and centered delta values. The resultant principal component scores were used to derive the composite index indicative of speech-related HA benefit.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {inproceedings}
\r\n}
\r\n<\/div>

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\r\n

2017<\/h3>\r\n <\/td>\r\n <\/tr>

van Hauen, Sigurd M\u00f8ller; Rukj\u00e6r, Andreas Harbo; Ordo\u00f1ez, Rodrigo; Hammersh\u00f8i, Dorte<\/p>

Estimating auditory filter bandwidth using distortion product otoacoustic emissions<\/a> Inproceedings<\/span> <\/p>

Santurette, S\u00e9bastien; Dau, Torsten; Christensen-Dalsgaard, Jakob; Tranebj\u00e6rg, Lisbeth; Poulsen, Torben (Ed.): Proceedings of the International Symposium on Auditory and Audiological Research: Vol. 6: Adaptive Processes in Hearing, <\/span>pp. 263-270, <\/span>The Danavox Jubilee Foundation <\/span>2017<\/span>, ISBN: 978-87-990013-6-1<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@inproceedings{SigurdISAAR2017,
\r\ntitle = {Estimating auditory filter bandwidth using distortion product otoacoustic emissions},
\r\nauthor = {Sigurd M\u00f8ller van Hauen and Andreas Harbo Rukj\u00e6r and Rodrigo Ordo\u00f1ez and Dorte Hammersh\u00f8i},
\r\neditor = {S\u00e9bastien Santurette and Torsten Dau and Jakob Christensen-Dalsgaard and Lisbeth Tranebj\u00e6rg and Torben Poulsen},
\r\nurl = {https:\/\/proceedings.isaar.eu\/index.php\/isaarproc\/article\/view\/2017-32},
\r\nisbn = {978-87-990013-6-1},
\r\nyear = {2017},
\r\ndate = {2017-08-23},
\r\nbooktitle = {Proceedings of the International Symposium on Auditory and Audiological Research: Vol. 6: Adaptive Processes in Hearing},
\r\npages = {263-270},
\r\norganization = {The Danavox Jubilee Foundation},
\r\nabstract = {The basic frequency selectivity in the listener\u2019s hearing is often characterized by auditory filters. These filters are determined through listening tests, which estimate the masking threshold as a function of frequency of the tone and the bandwidth of the masking sound. The auditory filters have been shown to be wider for listeners with sensorineural impairment. In a recent study (Christensen et al., 2017) it was demonstrated on group basis that the distortion product stimulus ratio that provided the strongest 2 f1\u2212 f2 component at low frequencies had a strong correlation to the theoretical relation between frequency and auditory filter bandwidth, described by the equivalent rectangular bandwidth (ERB, Glasberg and Moore, 1990). The purpose of the present study is to test whether a similar correlation exists on an individual basis at normal audiometric frequencies. The optimal 2 f1 \u2212 f2 DPOAE ratio is determined for stimulus ratios between 1.1 and 1.6, at fixed primary levels (L1\/L2 = 65\/45 dB SPL). The auditory filters are determined using notched-noise method in a two alternative forced choice experiment with noise levels at 40 dB SPL\/Hz. Optimal ratios and auditory filters are determined at 1, 2, and 4 kHz for 10 young normal-hearing subjects.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {inproceedings}
\r\n}
\r\n<\/div>

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\r\n

2016<\/h3>\r\n <\/td>\r\n <\/tr>

Hammersh\u00f8i, Dorte; Ordo\u00f1ez, Rodrigo; Christensen, Anders Tornvig<\/p>

More robust estimates for DPOAE level at audiometric frequencies<\/a> Inproceedings<\/span> <\/p>

Proceedings of the 22nd International Congress on Acoustics, Buenos Aires, Argentina, September 5-9 2016, <\/span>pp. 1-9, <\/span>ICA, <\/span>2016<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@inproceedings{Hammersh\u00f8i2016,
\r\ntitle = {More robust estimates for DPOAE level at audiometric frequencies},
\r\nauthor = {Dorte Hammersh\u00f8i and Rodrigo Ordo\u00f1ez and Anders Tornvig Christensen},
\r\nurl = {http:\/\/www.ica2016.org.ar\/ica2016proceedings\/ica2016\/ICA2016-0885.pdf},
\r\nyear = {2016},
\r\ndate = {2016-09-05},
\r\nbooktitle = {Proceedings of the 22nd International Congress on Acoustics, Buenos Aires, Argentina, September 5-9 2016},
\r\nnumber = {885},
\r\npages = {1-9},
\r\npublisher = {ICA},
\r\nabstract = {Current clinical methods determine 2 f1 \u2212 f2 distortion product oto-acoustic emission (DPAOE)
\r\nlevels at discrete frequencies, and often only at the audiometric standard frequencies in order
\r\nto save time. The measured result is known to be a superposition of at least two components,
\r\nthe generator component originating from a region around the primary f2, and the reflection
\r\ncomponent from the 2 f1 \u2212 f2 site. Distinct interference patterns in high resolution DPOAE data
\r\nreveal that these two components can be of similar magnitude, and periodically cancel each
\r\nother entirely. When measurements are made at only few frequencies, there is a risk to find one
\r\nor more low amplitude measurement, even in a healthy ear with otherwise high emissions. In
\r\nthe present study, data from previous studies measured with a high frequency resolution is used
\r\nfor simulating a better use of measurements at and around the audiometric frequency. A \u201dlocal\u201d
\r\nmodel of the two component superposition is applied, and the trade-off between measurement
\r\ntime, and robustness of the measure is discussed.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {inproceedings}
\r\n}
\r\n<\/div>

Close<\/a><\/p><\/div>

Current clinical methods determine 2 f1 \u2212 f2 distortion product oto-acoustic emission (DPAOE)
\r\nlevels at discrete frequencies, and often only at the audiometric standard frequencies in order
\r\nto save time. The measured result is known to be a superposition of at least two components,
\r\nthe generator component originating from a region around the primary f2, and the reflection
\r\ncomponent from the 2 f1 \u2212 f2 site. Distinct interference patterns in high resolution DPOAE data
\r\nreveal that these two components can be of similar magnitude, and periodically cancel each
\r\nother entirely. When measurements are made at only few frequencies, there is a risk to find one
\r\nor more low amplitude measurement, even in a healthy ear with otherwise high emissions. In
\r\nthe present study, data from previous studies measured with a high frequency resolution is used
\r\nfor simulating a better use of measurements at and around the audiometric frequency. A \u201dlocal\u201d
\r\nmodel of the two component superposition is applied, and the trade-off between measurement
\r\ntime, and robustness of the measure is discussed.<\/div>

Close<\/a><\/p><\/div>