Noise exposure in vocational school

Hearing Conservation Program is a series of activities designed to prevent hearing loss in Vocational High School students. The objectives of the research were to know the difference between 10^th grade and 12^th grade student's questionnaires result which includes the presence of hearing loss, personal protective equipment, the student's knowledge of hearing loss, and both ears Pure Tone Average (PTA) value of the 10^th grade and 12^th grade students that exposed to noise. The research was analytic observational by assessing the result of questionnaire and audiometric examination using cross sectional study. The questionnaires charging, audiometric examination, and the measurement of equipment's noise with Sound Level Meter (SLM) have been conducted for 3 months. The samples were 74 students taken from each 10^th grade and 12^th grade classes at light vehicle engineering majors. The data were processed, analyzed statistically. Assessment of questionnaire results, there was no difference between 10^th grade and 12^th grade students (Mann-Whitney test, p = 1). There were no differences in right-ear PTA value between 10^th grade and 12^th grade students (Two-Sample t-Test, p = 0.10), whereas left ear PTA indicate differences between 10^th grade and 12^th grade students (Mann-Whitney test, p = 0.001). The questionnaires data indicate that schools haven't done yet a hearing conservation program for 10^th grade and 12^th grade students. The differences in the student's right and left ear PTA indicate the possibility that noise exposure on students of light vehicle engineering majors have some effect.