A Thorson1, N P Hoa, N H Long, P Allebeck, V K Diwan. 1. Division of International Health, Department of Public Health Sciences, Karolinska Institutet, 171 76 Stockholm, Sweden. Anna.Thorson@phs.ki.se
Abstract
OBJECTIVE: The aim was to estimate the gender-specific prevalence of tuberculosis (TB) through screening. A further aim was to calculate case detection within the Vietnamese National TB program. STUDY DESIGN AND SETTING: A population-based survey of 35,832 adults was performed within an existing sociodemographic longitudinal study in Bavi district, northern Vietnam. Cases were identified by a screening question about prolonged cough and further diagnosed with sputum examination and a chest X-ray. RESULTS: The estimated prevalence of pulmonary TB among men was 90/100,000 (95% CI 45-135/100,000) and among women 110/100,000 (95% CI 63-157/100,000). Case detection in the district was estimated to 39% (95% CI 20-76%) among men and 12% (95% CI 6-26%) among women. CONCLUSION: TB prevalence was similar among men and women. Case detection among men and women was significantly lower than the reported national case detection of 80%, and there was a significant underdetection of female cases. These findings warrant actions, and emphasize the need to perform similar studies in different contexts.
OBJECTIVE: The aim was to estimate the gender-specific prevalence of tuberculosis (TB) through screening. A further aim was to calculate case detection within the Vietnamese National TB program. STUDY DESIGN AND SETTING: A population-based survey of 35,832 adults was performed within an existing sociodemographic longitudinal study in Bavi district, northern Vietnam. Cases were identified by a screening question about prolonged cough and further diagnosed with sputum examination and a chest X-ray. RESULTS: The estimated prevalence of pulmonary TB among men was 90/100,000 (95% CI 45-135/100,000) and among women 110/100,000 (95% CI 63-157/100,000). Case detection in the district was estimated to 39% (95% CI 20-76%) among men and 12% (95% CI 6-26%) among women. CONCLUSION: TB prevalence was similar among men and women. Case detection among men and women was significantly lower than the reported national case detection of 80%, and there was a significant underdetection of female cases. These findings warrant actions, and emphasize the need to perform similar studies in different contexts.
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