Introduction: Presbycusis or age-related hearing loss is a condition of insidious onset with significant socio-professional repercussions. The objective of this study was to determine the impact and factors associated with presbycusis among 50 years aged people or older in Parakou commune during 2021. Methods: This was a cross-sectional, descriptive, analytical study with prospective data collection. The study has involved 541 50 years aged people or older, from February to May 2021. For each of them, a questionnaire was completed, otoscopy and tone audiometry performed. The ERSA questionnaire and the logistic regression model were used to determine the impact and factors associated with presbycusis. Results: The mean age was 59.48 ± 9.80 years and the sex ratio was 1.23. The prevalence of presbycusis was 50.28%. Age ≥ 80 years (p = 0.002), male sex (p = 0.016), low educational level (p = 0.001), family history of age-related hearing loss (p = 0.018) and presence of hearing loss (p = 0.001) were significantly associated with presbycusis in multivariate analysis. Of the life domains studied, personal life (mean score = 32.9 ± 10.52) was the most affected. Similarly, communication in a noisy environment (mean score = 4.39 ± 2.39) was the most affected aspect of personal life. Conclusion: Presbycusis leads to an impairment of personal life. A good knowledge of the associated factors and an early management could contribute to the improvement of the hearing health of the elderly.

Introduction: Military musicians are subjected to a double risk of noise related to the use of combat weapons and then to the use of musical instruments. The objective of this study was to assess the otological damage of military music professionals in Cotonou. Methods: This was an analytical crosssectional study carried out from July 15 to November 15, 2019. It focused on soldiers from the Music Squadron and the first Motorized Intervention Battalion of Camp Guézo in Cotonou. Results: 110 soldiers were included. The mean age was 34.3 ± 6.2 years. The sex ratio was 17.3. The instruments used were wind (74.5%), percussion (23.6%) and string (1.8%). The average length of service in the Music Squadron was 11.5 ± 6.7 years with extremes of 1 year and 25 years. They practiced military music for an average of 4.58 hours per day for 4 days per week. The mean sonometric measurement during training ranged from 89.1 dB (A) to 116.4 dB (A). Hearing loss was predominant in the military musicians group and was mild degree bilaterally (p = 0.002) and perceptual type (p = 0.007). Conclusion: Military musicians are exposed to high noise levels, putting them at risk of developing hearing problems that may limit their performance. The main otological morbidity found was hearing loss associated with a few cases of tinnitus and headache.