{"id":2526,"date":"2019-03-20T14:42:52","date_gmt":"2019-03-20T14:42:52","guid":{"rendered":"https:\/\/bear-hearing.dk\/?page_id=2526"},"modified":"2021-07-14T11:25:23","modified_gmt":"2021-07-14T11:25:23","slug":"sreeram-kaithali-narayanan","status":"publish","type":"page","link":"https:\/\/bear-hearing.dk\/da\/whoweare\/sreeram-kaithali-narayanan\/","title":{"rendered":"Sreeram Kaithali Narayanan \u2013 Hvem vi er"},"content":{"rendered":"

Hvem vi er<\/h3>\t\t\t
Projektet havde deltagelse af en gruppe dedikerede mennesker, der kom fra audiologiske klinikker, universiteter, teknologisk service, og h\u00f8reapparatindustrien. Det var medicinske audiologer og otologer, ingeni\u00f8rer, konsulenter og audiologop\u00e6der. Nogle unge, andre mere erfarne. Nogle arbejdede p\u00e5 projektet p\u00e5 fuld tid, andre p\u00e5 deltid og med andre forpligtelser. Enkelte havde direkte erfaringer med h\u00f8reneds\u00e6ttelse og rehabilitering.<\/div>\n\t\t<\/div><\/div><\/div>
<\/div><\/div><\/div>
\n\n
\n\t\"Sreeram\n<\/a><\/div>\n\n<\/div><\/div><\/div>
\n
\n\t

Sreeram Kaithali Narayanan<\/b><\/a><\/div>\r\nPhD studerende\r\nAalborg Universitet<\/h4>\n<\/div>\n<\/div><\/div><\/div><\/div>

Sreeram Kaithali Narayanan<\/h3>\n
\n\t<\/p>\n

Sreeram Kaithali Narayanan fik sin ingeni\u00f8ruddannelse indenfor elektronik og telekommunikation fra Anna University i Indien i 2005. Han arbejdede for mere end 10 \u00e5r i forskellige industri jobs med blandet rumakustik, f\u00f8r han tog sin kandidatgrad indenfor Lyd og Akustisk Teknologi ved Danmarks Tekniske Universitet i august 2018. Hans kandidat projekt fokuserede p\u00e5 forst\u00e5elsen af betydningen af hovedbev\u00e6gelser under m\u00e5ling af hjernestammeaudiometri i frit felt, som er en objektiv m\u00e5lemetode, som er foresl\u00e5et som klinisk metode i forbindelse med h\u00f8reapparat tilpasning af sp\u00e6db\u00f8rn. Fra 1. september 2018 til 23. januar 2019 arbejdede han som forskningsassistent ved gruppen for Akustisk Teknologi ved DTU.<\/p><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

Arbejdsomr\u00e5de<\/h3>\n
\n\t

Sreeram Kaithali Narayanan vil prim\u00e6rt arbejde med udfordringerne knyttet til brugere med d\u00e5rligt udbytte<\/a> af h\u00f8reapparat rehabiliteringen.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

Ressourcer<\/h3>\n
\n\t<\/div>\n<\/div><\/div>
\n
\n\t

Publikationer<\/h4>\n
<\/a><\/form>\r\n \r\n \r\n \r\n
\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>

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>

Sanchez-Lopez, Raul; Wu, Mengfan; Fereczkowski, Michal; Santurette, S\u00e9bastien; Baumann, Monika; Kowalewski, Borys; Piechowiak, Tobias; Bisgaard, Nikolai; Ravn, Gert; Narayanan, Sreeram Kaithali; Dau, Torsten; Neher, Tobias<\/p>

Towards Auditory Profile-Based Hearing-Aid Fittings: BEAR Rationale and Clinical Implementation<\/a> Journal Article<\/span> <\/p>

Audiological Research, <\/span>12 <\/span>(5), <\/span>pp. 564-573, <\/span>2022<\/span>.<\/p>

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

@article{AudRes2022a,
\r\ntitle = {Towards Auditory Profile-Based Hearing-Aid Fittings: BEAR Rationale and Clinical Implementation},
\r\nauthor = {Raul Sanchez-Lopez and Mengfan Wu and Michal Fereczkowski and S\u00e9bastien Santurette and Monika Baumann and Borys Kowalewski and Tobias Piechowiak and Nikolai Bisgaard and Gert Ravn and Sreeram Kaithali Narayanan and Torsten Dau and Tobias Neher},
\r\nurl = {https:\/\/doi.org\/10.3390\/audiolres12050055},
\r\ndoi = {10.3390\/audiolres12050055},
\r\nyear = {2022},
\r\ndate = {2022-10-09},
\r\njournal = {Audiological Research},
\r\nvolume = {12},
\r\nnumber = {5},
\r\npages = {564-573},
\r\nabstract = {(1) Background: To improve hearing-aid rehabilitation, the Danish \u2018Better hEAring Rehabilitation\u2019 (BEAR) project recently
\r\ndeveloped methods for individual hearing loss
\r\ncharacterization and hearing-aid fitting. Four auditory profiles differing in terms of audiometric hearing loss and supra-threshold hearing abilities were identified. To enable auditory profile-based hearing-aid treatment, a fitting rationale leveraging differences in gain prescription and signal-to- noise (SNR) improvement was developed. This report describes the translation of this rationale to clinical devices supplied by three industrial partners. (2) Methods: Regarding the SNR improvement, advanced feature settings were proposed and verified based on free-field measurements made with an acoustic mannikin fitted with the different hearing aids. Regarding the gain prescription, a clinically feasible fitting tool and procedure based on real-ear gain adjustments were developed. (3) Results: Analyses of the collected real-ear gain and SNR improvement data confirmed the feasibility of the clinical implementation. Differences between the auditory profile-based fitting strategy and a current \u2018best practice\u2019 procedure based on the NAL- NL2 fitting rule were verified and are discussed in terms of limitations and future perspectives. (4) Conclusion: Based on a joint effort from academic and industrial partners, the BEAR fitting rationale was transferred to commercially available hearing aids.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

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

(1) Background: To improve hearing-aid rehabilitation, the Danish \u2018Better hEAring Rehabilitation\u2019 (BEAR) project recently
\r\ndeveloped methods for individual hearing loss
\r\ncharacterization and hearing-aid fitting. Four auditory profiles differing in terms of audiometric hearing loss and supra-threshold hearing abilities were identified. To enable auditory profile-based hearing-aid treatment, a fitting rationale leveraging differences in gain prescription and signal-to- noise (SNR) improvement was developed. This report describes the translation of this rationale to clinical devices supplied by three industrial partners. (2) Methods: Regarding the SNR improvement, advanced feature settings were proposed and verified based on free-field measurements made with an acoustic mannikin fitted with the different hearing aids. Regarding the gain prescription, a clinically feasible fitting tool and procedure based on real-ear gain adjustments were developed. (3) Results: Analyses of the collected real-ear gain and SNR improvement data confirmed the feasibility of the clinical implementation. Differences between the auditory profile-based fitting strategy and a current \u2018best practice\u2019 procedure based on the NAL- NL2 fitting rule were verified and are discussed in terms of limitations and future perspectives. (4) Conclusion: Based on a joint effort from academic and industrial partners, the BEAR fitting rationale was transferred to commercially available hearing aids.<\/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

2021<\/h3>\r\n <\/td>\r\n <\/tr>

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

Prediction of successful hearing aid treatment in first-time and experienced hearing aid users: Using the International Outcome Inventory for Hearing Aids<\/a> Journal Article<\/span> <\/p>

International Journal of Audiology, <\/span>pp. 1-11, <\/span>2021<\/span>.<\/p>

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

@article{doi:10.1080\/14992027.2021.1916632,
\r\ntitle = {Prediction of successful hearing aid treatment in first-time and experienced hearing aid users: Using the International Outcome Inventory for Hearing Aids},
\r\nauthor = {Sabina Storbjerg Houm\u00f8ller and Anne Wolff and Vijaya K. Narne and Sreeram Kaithali Narayanan and Christian Godballe and Dan Dupont Hougaard and G\u00e9rard Loquet and Michael L Gaihede and Dorte Hammersh\u00f8i and Jesper Hvass Schmidt},
\r\nurl = {https:\/\/doi.org\/10.1080\/14992027.2021.1916632},
\r\ndoi = {10.1080\/14992027.2021.1916632},
\r\nyear = {2021},
\r\ndate = {2021-05-25},
\r\njournal = {International Journal of Audiology},
\r\npages = {1-11},
\r\nabstract = {Objective: Primarily to understand whether clinically relevant factors affect the International Outcome Inventory (IOI-HA) scores and to examine if IOI-HA scores improve when renewing the hearing aids (HA) for experienced users. Secondly, to estimate the overall HA effectiveness using the IOI-HA.
\r\n
\r\nDesign: A prospective observational study.
\r\n
\r\nStudy sample: In total, 1961 patients with hearing loss were included. All patients underwent a hearing examination, were fitted with HAs, and answered the IOI-HA. Factor analysis of IOI-HA separated the items into a Factor 1 (use of HA, perceived benefits, satisfaction, and quality of life) and Factor 2 (residual activity limitation, residual participation restriction and impact on others) score.
\r\n
\r\nResults: Degree of hearing loss, word recognition score, motivation, HA usage time, tinnitus, asymmetry, and sex were significantly associated with total IOI-HA, Factor 1, or Factor 2 scores. The seven IOI-HA items increased on average by 0.4 (p < 0.001) when renewing HAs. The total median IOI-HA score at follow-up was 29 (7) for experienced (n = 460) and first-time users (n = 1189), respectively.
\r\n
\r\nConclusions: Degree of hearing loss, word recognition score, motivation, tinnitus, asymmetry, and sex may be used to identify patients who require special attention to become successful HA users.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/div>

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Objective: Primarily to understand whether clinically relevant factors affect the International Outcome Inventory (IOI-HA) scores and to examine if IOI-HA scores improve when renewing the hearing aids (HA) for experienced users. Secondly, to estimate the overall HA effectiveness using the IOI-HA.
\r\n
\r\nDesign: A prospective observational study.
\r\n
\r\nStudy sample: In total, 1961 patients with hearing loss were included. All patients underwent a hearing examination, were fitted with HAs, and answered the IOI-HA. Factor analysis of IOI-HA separated the items into a Factor 1 (use of HA, perceived benefits, satisfaction, and quality of life) and Factor 2 (residual activity limitation, residual participation restriction and impact on others) score.
\r\n
\r\nResults: Degree of hearing loss, word recognition score, motivation, HA usage time, tinnitus, asymmetry, and sex were significantly associated with total IOI-HA, Factor 1, or Factor 2 scores. The seven IOI-HA items increased on average by 0.4 (p < 0.001) when renewing HAs. The total median IOI-HA score at follow-up was 29 (7) for experienced (n = 460) and first-time users (n = 1189), respectively.
\r\n
\r\nConclusions: Degree of hearing loss, word recognition score, motivation, tinnitus, asymmetry, and sex may be used to identify patients who require special attention to become successful HA users.<\/div>

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Rye, Palle; Narayanan, Sreeram Kaithali; Hammersh\u00f8i, Dorte<\/p>

Effects of Intermittent Noise on Real Ear Measurements in Hearing Aid Fitting<\/a> Inproceedings<\/span> <\/p>

Poster presentation at Baltic Nordic Acoustics Meeting, 3-5 May 2021, Oslo, Norway (online), <\/span>pp. 1\u20136, <\/span>NAA (Nordic Acoustical Association), <\/span>2021<\/span>.<\/p>

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

@inproceedings{PR_BNAM2021,
\r\ntitle = {Effects of Intermittent Noise on Real Ear Measurements in Hearing Aid Fitting},
\r\nauthor = {Palle Rye and Sreeram Kaithali Narayanan and Dorte Hammersh\u00f8i},
\r\nurl = {http:\/\/www.norskakustiskselskap.org\/wp-content\/uploads\/2021\/10\/BNAM_2021_Effects_of_Intermittent_Noise_on_Real_Ear_Measurements_in_Hearing_Aid_Fitting-31-28-Rye-Palle.pdf},
\r\nyear = {2021},
\r\ndate = {2021-05-03},
\r\nbooktitle = {Poster presentation at Baltic Nordic Acoustics Meeting, 3-5 May 2021, Oslo, Norway (online)},
\r\npages = {1--6},
\r\npublisher = {NAA (Nordic Acoustical Association)},
\r\nabstract = {When fitting a hearing aid, real ear measurements (REM) can prove a valuable tool for adjusting the gain of the hearing aid. In REM a probe microphone is inserted into the ear canal carefully placing the probe microphone tip a few millimeters from the tympanic membrane. Typically a reference microphone is present outside the ear canal near the pinna. Proper calibration before the REM measurement ensures a flat response of the probe microphone when placing the tip at the same positions as the reference microphone.
\r\nThe real ear unaided gain (REUG) is measured as the level difference between the reference microphone and the probe microphone placed near the tympanic membrane. Inserting the hearing aid the real ear aided gain (REAG) can be measured similarly and the real ear insertion gain (REIG) is calculated as the difference between the REAG and the REUG. Fitting a hearing aid typically involves matching the hearing aid gain to match a REIG prescription target derived by the patients audiogram and occasionally other diagnostic data. To ensure matching the REIG to the prescription target care must be taken to ensure accuracy in the REM measurements.
\r\nInspecting a database of thousands of clinically recorded REM a handful of anomalies were detected and the present study seek to reproduce the observed effects under controlled laboratory conditions. The study involves measuring REM using manikins as well as human subjects. A semi-automated test setup was developed to synchronise the measurement equipment and the noise disturbance in order to investigate the effects of different types of intermittent noise on REM. Preliminary results indicate that intermittent noise burst even shorter than 1s in duration can cause detrimental effects on the real ear measurement.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {inproceedings}
\r\n}
\r\n<\/div>

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

When fitting a hearing aid, real ear measurements (REM) can prove a valuable tool for adjusting the gain of the hearing aid. In REM a probe microphone is inserted into the ear canal carefully placing the probe microphone tip a few millimeters from the tympanic membrane. Typically a reference microphone is present outside the ear canal near the pinna. Proper calibration before the REM measurement ensures a flat response of the probe microphone when placing the tip at the same positions as the reference microphone.
\r\nThe real ear unaided gain (REUG) is measured as the level difference between the reference microphone and the probe microphone placed near the tympanic membrane. Inserting the hearing aid the real ear aided gain (REAG) can be measured similarly and the real ear insertion gain (REIG) is calculated as the difference between the REAG and the REUG. Fitting a hearing aid typically involves matching the hearing aid gain to match a REIG prescription target derived by the patients audiogram and occasionally other diagnostic data. To ensure matching the REIG to the prescription target care must be taken to ensure accuracy in the REM measurements.
\r\nInspecting a database of thousands of clinically recorded REM a handful of anomalies were detected and the present study seek to reproduce the observed effects under controlled laboratory conditions. The study involves measuring REM using manikins as well as human subjects. A semi-automated test setup was developed to synchronise the measurement equipment and the noise disturbance in order to investigate the effects of different types of intermittent noise on REM. Preliminary results indicate that intermittent noise burst even shorter than 1s in duration can cause detrimental effects on the real ear measurement.<\/div>

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\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>

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

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.<\/div>

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