Global tuberculosis trends: a reflection of changes in tuberculosis control or in population health?
METHODS: Country level data on population health and health services, economic and epidemiologic indicators were obtained for 165 countries. Regression methods were used to estimate the association of changes in potential predictors with changes in TB incidence.
RESULTS: Improvements in population health and health services are associated with improvements in TB outcomes. In adjusted analyses, each 1 year increase in life expectancy was associated with a 7.8/100 000 decline in TB incidence. A 1/1000 decrease in mortality rate in children aged <5 years and a 1% increase in measles vaccination coverage (serving as a general health services indicator) was associated with approximately a 1/100 000 decrease in TB incidence. In countries with a lower prevalence of human immunodeficiency virus (HIV) infection, a 1% increase in TB treatment success rate was also associated with a 1/100 000 decrease in incidence.
CONCLUSION: Investment in improving population health and health services may be as important as targeted strategies for controlling TB.
Document Type: Regular Paper
Affiliations: 1: Respiratory Epidemiology & Clinical Research Unit, Montreal Chest Institute, McGill University, Montreal, Quebec, Canada 2: Respiratory Epidemiology & Clinical Research Unit, Montreal Chest Institute, McGill University, Montreal, Quebec, Canada; and Department of Medicine, McGill University Health Center, Montreal, Quebec, Canada 3: Department of Medicine, McGill University Health Center, Montreal, Quebec, Canada 4: Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada; and Institute of Health and Social Policy, McGill University, Montreal, Quebec, Canada
Publication date: 2009-10-01
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