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Table 2 Association between tuberculosis and cigarette smoking

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

Variables

Case(n = 613) n(%)

Control(n = 1226) n(%)

cOR(95% CI)

aOR(95% CI)

Cigarette smoking

   Never

278(45.4)

673(54.9)

Ref.

Ref.

   Ever

335(54.6)

553(45.1)

1.47(1.21–1.78)

1.93(1.51–2.48)

Former

58(9.5)

93(7.6)

1.51(1.06–2.16)

1.95(1.32–2.87)

Current

277(45.2)

460(37.5)

1.46(1.19–1.79)

1.93(1.49–2.49)

Age of starting smoking (years)

   Never

278(45.4)

673(54.9)

Ref.

Ref.

   < 25

209(34.1)

325(26.5)

1.56(1.25–1.95)

2.09(1.59–2.75)

   ≥ 25

126(20.5)

228(18.6)

1.34(1.03–1.73)

1.72(1.28–2.33)

Smoking years

    

   Never

278(45.4)

673(54.9)

Ref.

Ref.

   < 30

135(22.0)

256(20.9)

1.28(0.99–1.64)

1.62(1.19–2.19)

   ≥ 30

200(32.6)

297(24.2)

1.63(1.30–2.05)

2.23(1.68–2.97)

Cigarettes per day

    

   Never

278(45.4)

673(54.9)

Ref.

Ref.

   < 19

107(17.5)

204(16.6)

1.27(0.97–1.67)

1.67(1.22–2.29)

   ≥ 19

228(37.2)

349(28.5)

1.58(1.27–1.97)

2.08(1.59–2.72)

Cumulative pack-years

    

   Never

278(45.4)

673(54.9)

Ref.

Ref.

   < 29

164(26.8)

299(24.4)

1.33(1.05–1.68)

1.73(1.30–2.31)

   ≥ 29

171(27.9)

254(20.7)

1.63(1.28–2.07)

2.18(1.63–2.91)

  1. †cOR: crude odds ratio; ‡aOR: adjusted odds ratio, adjusting for age, gender and alcohol drinking history