Evaluation of the Impact of Tinnitus on Health-Related Quality of Life amid Sawmill Workforces

Abstract

Background: Tinnitus is the phantom aural perception of sound lacking an exterior stimulus, a sub-type of auditory hallucination and it is a common sensation among noise-exposed employees. It is a symptom, not an illness. Tinnitus can be extremely perplexing for its subjects and it may perhaps dis-turb their health-related quality of life (HR-QoL) if exposed to extreme noises in many ways. Objective: This study is intended to discover the effects and pattern of tinnitus on health-related quality of life (HR-QoL) amid noise-exposed saw mill workforces. Method: This study was a prospective and public-centered cross-sectional study, including 510 sawmill personnel. 510 directorial staff was used as the control. Health-related quality of life (HR-QoL) of all subjects was assessed with the WHO Quality of Life brief questionnaire. Self-reported tinnitus morbidity was assessed by means of the Tinnitus Handicap Inventory. A correlation was established amid health-related quality of life scores and tinnitus severity scores. Result: There were 510 sawmill employees enlisted into the study, out of which 490 were men and 20 were women with control of the same age and sex. The mean age was 36.85 ± 7.68 years for the sawmill workers and 35.75 ± 8.65 years for the control group (t = 1.02, P = 0.275). The mean tinnitus score for the sawmill workers was 20.80 ± 2.56. Out of the 510 sawmill workers, 52 (10.2%) had tinnitus and one of the controls had tinnitus. The mean health-related quality of life scores were 62.20 ± 8.62 and 72.56 ± 5.98 for the sawmill workers and control group respectively. There was a substantial and remarkable difference between the health-related quality of life of the sawmill workers and the control group (P < 0.05). Also, it was observed that there was a noteworthy drop in the overall physical and psychological domains of the health-related quality of life scores with an increase in work environment noise level among sawmill employees and no major alteration was observed in the social and environmental aspects of the quality of life scores with change in occupational noise gains. Conclusion: The prevalence of tinnitus from this study was found to be 10.20% and an upsurge in tinnitus rigorousness was seen to be related with a substantial drop in physical, psychological and social domains of the health related quality of life. We highly endorse hearing conservation programmes and use of personal protective equipments for sawmills workers which will aid to decrease the effects of exposure to loud noise. Those sawmill labors already having tinnitus must attempt to go for treatment.