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Table 3 Stratified analysis on the association between cigarette smoking and tuberculosis by selected factors

From: Review of cigarette smoking and tuberculosis in China: intervention is needed for smoking cessation among tuberculosis patients

Stratified variables Smoking Case(n = 613) n(%) Control(n = 1226) n(%) aOR(95% CI)
Gender     
   Men Never 125(27.3) 366(40.0) Ref.
  Ever 333(72.7) 550(60.0) 1.93(1.50–2.48)
   Women Never 153(98.7) 307(99.0) Ref.
  Ever 2(1.3) 3(1.0) 2.06(0.30–14.28)
Age (years)     
   < 56 Never 148(54.8) 310(56.9) Ref.
  Ever 122(45.2) 235(43.1) 1.28(0.87–1.89)
   ≥ 56 Never 130(37.9) 363(53.3) Ref.
  Ever 213(62.1) 318(46.7) 2.56(1.84–3.56)
   Education (years)     
   < 6 Never 142(46.0) 385(57.0) Ref.
  Ever 167(54.0) 290(43.0) 2.23(1.56–3.17)
   ≥ 6 Never 136(44.7) 288(52.3) Ref.
  Ever 168(55.3) 263(47.7) 1.68(1.18–2.38)
Alcohol drinking     
   Never Never 255(56.7) 560(66.7) Ref.
  Ever 195(43.3) 279(33.3) 1.78(1.33–2.38)
   Ever Never 23(14.1) 113(29.2) Ref.
  Ever 140(85.9) 274(70.8) 2.45(1.48–4.06)
  1. †aOR: adjusted odds ratio, adjusting for age, gender and alcohol drinking history where appropriate
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