Relationship of occupational noise and sleep disturbance among fogging machine operator at Perak Tengah district health office

A cross-sectional study was conducted to find out the relationship between the effects of noise in the workplace and sleep disorders on the operator of the fogging machine at the Perak Tengah District Health Office. This study was conducted on 60 inspectorate unit staff at the Perak Tengah District Health Office consisting of Assistant Environmental Health Officers, Public Health Assistants, General Workers, and Drivers. Data were collected using self-controlled questionnaires and sound values from 10 machines were measured using sound level meter tools. From the study data conducted, the mean value of sound exposure to the fogging machine operator is 120.45 dB (A). The highest reading is 124.9 dB and the lowest is 116.60dB. From this data, it can be concluded that there are statistically significant differences in sleep disorders between exposed and non-exposed groups (U = 278, p = .003). The value of Chi-Square is 9.604, its significance level is 0.022, less than the probability level of 0.05. Thus, we can conclude that there is a significant relationship between noise and sleep disturbances among employees.