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Gangguan pendengaran karena bising merupakan salah satu penyakit akibat kerja yang sering ditemui pada perusahaan manufaktur. Hazard yang bisa menyebabkan gangguan pendengaran meliputi bising, zat kimia dan getaran. Ruang lingkup penelitian tesis ini adalah melihat dampak pajanan bising terhadap fungsi pendengaran pekerja yang terpajan bising diatas 82 dBA. Jenis penelitian adalah cross sectional study yang meneliti hubungan faktor independen berupa dosisi pajanan dalam perhitungan leq, umur dan masa kerja serta faktor penggangu berupa pemakaian alat pelindung diri serta kebiasaan dengan fungsi pendengaran pekerja. Dari survei tingkat bising ditemukan departemen PVC, CDM, CDS dan CDB mempunyai tingkat kebisingan diatas nilai ambang batas yang diperbolehkan.
Hasil pemeriksaan audiometri ditemukan dua orang responden yang mengalami gangguan pendengaran. Responden yang mengalami gangguan pendengaran satu orang berumur diatas 40 tahun, bekerja pada ruangan PVC dimana merupakan tingkat pajanan bising tertinggi di pabrik ini dan sudah bekerja selama lebih dari 5 tahun. Responden yang mengalami gangguan pendengaran lainnya merupakan pekerja yang berumur dibawah 40 tahun dan sudah bekerja selama lebih dari 5 tahun. Dari hasil analisis statistik tidak ditemukan hubungan yang signifikan antara Leq pajanan bising, faktor masa kerja, pemakaian alat pelindung diri dan kebiasaan merokok dengan gangguan pendengaran. Ditemukan hubungan yang signifikan antara umur dan gangguan pendengaran dengan OD ratio 7.99.
Noise induced hearing loss is one of the occupational diseases are often found in manufacturing companies. Hazard that can cause hearing loss include noise, chemicals and vibration. The scope of this thesis research on the impact of noise exposure on hearing function of workers exposed to noise above 82 dBA. This type of research is a cross-sectional study examining the relationship be an independent factor in the noise dose exposure (leq), age and working period and disturbance factors such as the use of personal protective equipment, smoking with hearing function. From the survey found noise levels PVC department, CDM, CDS and CDB have noise levels above the permitted threshold value.
Audiometric examination found two participant who suffered from hearing loss. Respondents who suffered from hearing loss a person aged over 40 years, working on PVC indoor noise exposure level which is the highest in the plant and it has been working for more than 5 years. Other participant who suffered from hearing loss is under the age of 40 years and has been working for more than 5 years. From the analysis found no statistically significant relationship between Leq noise exposure, working period, the use of personal protective equipment and smoking with hearing loss. Found a significant relationship between age and hearing loss with OD ratio 7.99.
Hasil penelitian menunjukan sebanyak 37 pekerja (44%) mengalami keluhan gangguan pendengaran tinggi. Berdasarkan uji chi square, terdapat hubungan yang signifikan antara kebisingan > 85 dBA (p value=0,039, OR=2,8), usia (p value=0,012, OR=3,457) dan penggunaan alat pelindung telinga (APT) (p value=0,046, OR=2,761) dengan keluhan gangguan pendengaran. Sedangkan variabel masa kerja, riwayat penyakit telinga, riwayat hipertensi, riwayat diabetes, merokok, dan hobi terpajan bising tidak menunjukan hubungan yang signifikan.
Hasil analisis multivariat menunjukan pekerja yang terpajan kebisingan diatas NAB memiliki risiko 4,512 kali lebih tinggi dibandingkan pekerja yang terpajan kebisingan dibawah NAB setelah dikontrol oleh variabel usia. Pekerja yang terpajan kebisingan berisiko untuk mengalami keluhan gangguan pendengeran. Pekerja yang berusia lebih dari 40 tahun dan tidak menggunakan APT saat berkeja memiliki risiko lebih besar untuk mengalami keluhan gangguan pendengaran.
Kata kunci: Industri Tekstil, Kebisingan, Keluhan Gangguan Pendengaran
PT X is a textile industry in Indonesia with a variety of machinery and equipment generating high-intensity noise in several areas. This study aimed to analyze the relationship between noise intensity higher than 85 dBA with hearing loss complain on workers of spinning, weaving, and dyeing department at PT X. The method used in this study was quantitative analysis with a cross-sectional study design. The number of samples in this study was 84 workers chosen by proportionate stratified random sampling method. The independent variable in this study was noise level while the dependent variable was hearing loss complaints, with confounding variables included characteristic and worker behavior.
The study result shows that 37 workers (44%) experienced hearing loss complaints. Based on the chi-square test, there was a significant relationship between noise > 85 dBA (p value = 0.039, OR = 2.8), age (p value = 0.012, OR = 3.457) and hearing protection device (HPD) utilization (p value = 0.046, OR = 2.761) with hearing loss complaints. Meanwhile, variables of the working period, ear disease history, hypertension history, diabetes history, smoking history, and noise exposure do not show a significant relationship.
The multivariate result shows that workers exposed to noise above TLV possess 4.512 times higher risk than the workers exposed to noise under TLV after being controlled by age variable. Noise-exposed workers are at risk of experiencing complaints of hearing loss. Workers who are over 40 years old and do not use HPD while working have a greater risk of experiencing hearing loss complaints.
Keywords: Hearing Loss Complain, Noise, Textile Industry
Noise level in Water Treatment Plant (WTP) is high enough. Increasing the need for clean water in line with the increasing population, making the Water Supply Company (PDAM) is required to increase production capacity. There are machines and production processes that have different characteristics than other types of industries. There are 306 PDAMs throughout Indonesia, the potential number of workers exposed to noise is very large, it is necessary to further investigate the relationship between noise characteristics and its determinants to hearing loss to PDAM workers to obtain the most appropriate form of control. This study used a cross sectional study design. The stages of this study are to measure the noise level and provide questionnaires as primary data, analyzing the worker audiometric results as secondary data and using Chi Square statistical test and multi determinant analysis to find out the relationship between independent and dependent variables. The results obtained that the source of noise in water treatment plants are pumps, exhaust fan, compressor, blower, vacuum and waterfall. About 84.4% of workers in the production area exposed to noise > 85 dBA. About 15.6% of workers have hearing loss. It is concluded that exposure workers over 85 dBA with dominant noise frequency > 2000 Hz can cause hearing impairment and aggravate if workers are > 40 years old and have a working life > 14 years. Key words: Noise, Water supply company, Hearing loss, Noise frequency
