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Free Content Epidemiological and spatial factors for tuberculosis: a matched case-control study in Nagata, Japan

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SETTING AND OBJECTIVE: Several studies have found a significant association between tuberculosis (TB) and spatial factors. We wished to determine the effect of host-related factors and spatial factors associated with an increased risk of TB, and to assess spatial clustering.

DESIGN: A hospital-based case-control study using medical records was conducted. A total of 103 age- and sex-matched TB patients (cases) and 299 patients without TB (controls) were recruited from January 2000 to December 2016 in a hospital in Nagata, Kobe, Japan. Logistic regression, kernel density estimation, Cross L function and a Poisson regression model were applied.

RESULTS: The epidemiological factors associated with TB were being a health care worker (OR 10.1) and lower serum albumin level (OR 0.5). Spatial analyses revealed TB to be positively associated with population density (risk ratio [RR] 32.1), the proportion of single households (RR −1.85) and persons aged 65 years (RR 2.65) and one spatial clustering.

CONCLUSION: Our findings could help in the identification of high TB risk individuals and districts.
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Keywords: Japan; TB; risk factors; spatial factors

Document Type: Research Article

Affiliations: 1: Department of Public Health, Graduate School of Health Sciences, Kobe University, Hyogo 2: Department of Internal Medicine, Kobe Kyodo Hospital, Hyogo, Japan

Publication date: February 1, 2019

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  • The International Journal of Tuberculosis and Lung Disease publishes articles on all aspects of lung health, including public health-related issues such as training programmes, cost-benefit analysis, legislation, epidemiology, intervention studies and health systems research. The IJTLD is dedicated to the continuing education of physicians and health personnel and the dissemination of information on lung health world-wide.

    To share scientific research of immediate concern as rapidly as possible, The Union is fast-tracking the publication of certain articles from the IJTLD and publishing them on The Union website, prior to their publication in the Journal. Read fast-track articles.

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