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Updated: May 7, 2025
10:04
Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
Published on: September 5, 2017
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TB prevalence is higher among smokers
G Prathiksha1, A Newtonraj1, K Thiruvengadam1
1ICMR-National Institute for Research in Tuberculosis, Chennai, India.
Summary
Current smoking significantly increases the risk of microbiologically confirmed pulmonary tuberculosis (MCPTB). Factors like older age, undernutrition, alcohol use, and prior TB history further elevate MCPTB risk in smokers.
Area of Science:
- Epidemiology
- Public Health
- Respiratory Medicine
Background:
- Population-based surveys are essential for understanding the epidemiology of smoking and tuberculosis (TB).
- Smoking is a known risk factor for various respiratory diseases, including TB.
Purpose of the Study:
- To investigate the association between smoking and the prevalence of microbiologically confirmed pulmonary tuberculosis (MCPTB) in Southern India.
- To identify factors associated with increased MCPTB risk among smokers.
Main Methods:
- A sub-national cross-sectional survey was conducted in 180 clusters in Southern India.
- Data were collected from 130,914 participants aged 15 years and above.
- MCPTB diagnosis was based on microbiological confirmation.
Main Results:
- The prevalence of MCPTB was significantly higher in current smokers (0.7%) and past smokers (0.6%) compared to non-smokers (0.1%).
- Crude prevalence ratio (cPR) of MCPTB in smokers was 4.33.
- Adjusted prevalence ratios (aPR) indicated increased MCPTB risk with older age groups, low body mass index (<16.50 kg/m²), alcohol use, and a history of TB among smokers.
Conclusions:
- Smoking is a significant risk factor for MCPTB.
- Increasing age, undernutrition, alcohol consumption, and a previous history of TB are strongly associated with higher MCPTB prevalence in smokers.
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