Sixty-one male spice grinders from 14 factories were studied to determine if they had any skin problems, respiratory symptoms or hearing loss associated with their work. All subjects were interviewed and examined. Audiometric examinations were arranged for those with significant noise exposure. Assessments of dust and noise levels were conducted. Symptoms of upper respiratory tract irritation, such as sneezing and runny nose, during work were experienced by 49.2 per cent of workers. These symptoms were maximal in the first few weeks of employment in spice grinding and did not recur in half of the affected workers. Over 26 per cent of the workers experienced a warm or burning sensation of the skin when grinding chili or pepper. None of the spice grinders had symptoms or evidence on physical examination of allergic skin disease or asthma. Noise-induced hearing loss was detected in 21 per cent of the workers examined but none had severe disabling deafness. Dust levels ranged from 0.03 to 0.82 mg/m3, with a mean value of 0.15 mg/m3. Noise exposure was significant, with levels of between 87 and 98 dBA. Control measures to reduce the noise and dust exposure are discussed.
Health complaints, blood pressure, sleep and sickness absence experience were studied in 308 female electronics workers employed for at least one year on 12 h shifts--253 on permanent and 55 on rotating schedules. Seventy-five 8 h day workers acted as controls. There were no significant differences in symptom prevalence between the controls and 12 h shift workers, except for complaints of tiredness, with a higher proportion of the rotating shift group also having headaches. No significant differences in prevalence of hypertension were noted. Although subjects on the night shift had shorter sleep than controls and 12h day workers, only the group on rotating schedule had a higher proportion of workers who did not sleep well compared to the controls. Sickness absence was not increased in the 12 h shift groups when compared to the controls. The results indicate no serious health problems among workers on 12 h shift for over a year.
This paper describes the system of statutory medical examinations introduced in Singapore since 1985 and the role of designated factory doctors, as well as the progress of the system, problems and issues involved. The basic objective of the system is to ensure that workers in special risk occupations are fit for such work. Factory workers exposed to any of 14 prescribed hazards must undergo specific medical examinations and tests by designated factory doctors who are trained and registered with the Labour Ministry. Abnormal work-related cases are notified to the Ministry for further investigation. Currently there are 330 designated factory doctors and each year, over 38,000 workers are examined, 88 per cent for noise exposure. The system provides opportunities for early detection of both occupational and non work-related abnormalities, individual counselling and timely preventive action. It also complements industrial hygiene monitoring activities in the evaluation of health hazards and promotes self-regulation. To enhance the effectiveness of the system, the doctors must be properly trained and some degree of supervision is needed, particularly with regard to accuracy and interpretation of laboratory results, emphasis on counselling and re-orientation and updating of knowledge.
Objectives: This study aimed to validate the Correctional Mental Health Screen (CMHS) in the Hong Kong prison population and determine the prevalence of psychiatric disorders among remand prisoners in Hong Kong and the associated factors of mental illness. Methods: This cohort study was conducted at the Lai Chi Kok Reception Centre and the Tai Lam Centre for Women in Hong Kong. Remand prisoners aged ≥21 years were recruited between May and August 2014. Sociodemographic and clinical data were collected. Each remand prisoner was assessed using the appropriate CMHS for males or for females, then interviewed by a specialist psychiatrist using the Structured Clinical Interview for DSM-IV for current affective disorder and psychotic disorder for crossvalidation. Results: A total of 245 remand prisoners were recruited (150 males and 95 females; mean age, 25.8 years). Of them, 51% (55% males and 44% females) had a lifetime history of psychiatric disorder, whereas 39.6% (46% males and 29.5% females) had a current psychiatric disorder. The most common psychiatric disorder was substance use disorder (>36%), followed by mood disorder (>20%), psychotic disorder (5.3%), and lifetime neurotic disorder (3.7%). Living in a public housing estate (odds ratio [OR] = 1.99), a history of childhood conduct problem (OR = 2.40), and a forensic history (OR = 1.97) were associated with an increased risk of having a psychiatric disorder. The CMHS had good diagnostic efficiency after cross-validation with the Structured Clinical Interview for DSM-IV. Conclusion: Psychiatric disorders are prevalent in remand prisoners in Hong Kong. The CMHS is an effective tool to screen remand prisoners for timely treatment of prisoners with mental health needs.
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