Hearing Threshold Status and Risk Estimate of Hearing Impairment among Administrative Workforce. 2018

Joydeep Majumder, and Ramanlal C Patel, and Sanjay Kotadiya, and Priyanka Shah
Division of Physiology and Ergonomics, ICMR-National Institute of Occupational Health, Ahmedabad, Gujarat, India.

BACKGROUND Administrative workers working in quieter environment workplace are considered unaffected by noise-induced hearing loss (NIHL). OBJECTIVE To create a baseline data of the administrative workers so as to monitor them with prospective years of exposure with the hypothesis that workers working in the administrative jobs may not be affected by NIHL. METHODS The study was conducted among men and women administrative workers working in an office in Ahmedabad city, India. The design of the study was prospective cross-sectional study. METHODS In all, 64 men and 33 women administrative workers were recruited. Pure tone air conduction (AC) and unmasked bone conduction (BC) audiometry of both ears was performed. Pure tone averages (PTAs) and air-bone gap (ABG) were calculated. Excess risk of hearing impairment was estimated using five model equations. METHODS Descriptive statistics was used for analysis. For calculation of excess risk of hearing impairment, models in online calculator were used. RESULTS AC for men depicted 4 and 6 kHz notch, whereas 6 kHz for women, for both ears. Around three-fourth men and nine-tenth women recorded hearing threshold <25 dB (A) for PTA0.5-1-2-4. ABG was <15 dB at all frequencies except 6 kHz, for both groups. Highest values of average estimated excess risk were 4.89% and 1.21% for men and women, respectively. Estimated excess risk ranged up to 1% for 50%-77% men and 82%-91% women. CONCLUSIONS Administrative workers are minimally risked of developing NIHL; however, with progressive age, hearing ability may deteriorate.

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