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FCM: The fuzzy c-means clustering algorithm
This paper transmits a FORTRAN-IV coding of the fuzzy c -means (FCM) clustering program. Expand
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Silicosis prevalence and exposure-response relations in South African goldminers
Aims: To measure the prevalence of silicosis among black migrant contract workers on a South African goldmine and to investigate exposure-response relations with silica dust. Methods: In a crossExpand
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The social epidemiology of tuberculosis in South Africa: a multilevel analysis.
Increased risk of tuberculosis is widely recognized to be associated with increased poverty, yet there have been few analyses of the social determinants of tuberculosis, particularly in high-burdenExpand
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Predictors of chronic bronchitis in South African adults.
SETTING National household survey of adults in South Africa, a middle income country. OBJECTIVE To determine the prevalence and predictors of chronic bronchitis. DESIGN A stratified nationalExpand
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Wheeze, asthma diagnosis and medication use: a national adult survey in a developing country
Background: As relatively little is known about adult wheeze and asthma in developing countries, this study aimed to determine the predictors of wheeze, asthma diagnosis, and current treatment in aExpand
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Chronic airflow obstruction and respiratory symptoms following tuberculosis: a review of South African studies.
BACKGROUND There is renewed interest in the chronic respiratory sequelae of pulmonary tuberculosis (PTB), particularly chronic airflow limitation. A number of South African epidemiological studiesExpand
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Prevalence and reliability of asthma symptoms in primary school children in Cape Town.
BACKGROUND Childhood asthma is believed to be a serious problem in Cape Town, South Africa. This study aimed to measure the prevalence and reliability of asthma symptoms and reported asthma in CapeExpand
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Evaluation of the quality of informed consent in a vaccine field trial in a developing country setting
BackgroundInformed consent is an ethical and legal requirement for research involving human participants. However, few studies have evaluated the process, particularly in Africa.Participants in aExpand
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Incidence of occupational latent tuberculosis infection in South African healthcare workers
The test-specific incidence of latent tuberculosis infection (LTBI) in healthcare workers from sub-Saharan Africa is unknown. 505 healthcare workers from South Africa were screened at baseline, andExpand
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The Tuberculin Skin Test versus QuantiFERON TB Gold® in Predicting Tuberculosis Disease in an Adolescent Cohort Study in South Africa
Setting This study was conducted in a high tuberculosis (TB) burden area in Worcester, South Africa, with a notified all TB incidence rate of 1,400/100,000. Main Objective To compare the predictiveExpand
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