Table 1.
Smoking prevalence in TB patients and their subgroups compared with that in the general population
| Number of smokers/number in group | Prevalence % (95% CI) | Absolute difference in prevalence % (95% CI) | Absolute difference in prevalence % (95% CI) | Relative risk ratio (95% CI) | P | |
|---|---|---|---|---|---|---|
| All screened participants | 3127/13906 | 22.5 (21.8–23.2) | NA | NA | NA | NA |
| Bangladesh participants | 1972/8083 | 24.4 (23.5–25.3) | 16.4 | 8.0 (7.1–8.9) | 1.49 (1.43–1.54) | <0.01 |
| Males | 1961/4760 | 41.2 (39.8–42.6) | 33.1 | 8.1 (6.7–9.5) | 1.24 (1.20–1.29) | <0.01 |
| Females | 11/3323 | 0.3 (0.1–0.5) | 0.7 | -0.4 (-0.6– -0.2) | 0.43 (0.14–0.71) | 0.01 |
| Pakistan participants | 1155/5823 | 19.8 (18.8–20.9) | 11.5 | 8.3 (7.3–9.4) | 1.72 (1.63–1.82) | <0.01 |
| Males | 1126/3687 | 30.5(29.1–32.0) | 20.6 | 9.9(8.5–11.4) | 1.48 (1.41–1.55) | <0.01 |
| Females | 29/2136 | 1.4 (0.9–1.8) | 2.0 | -0.6 (-1.1– -0.2) | 0.70 (0.45–0.90) | 0.03 |
| All pulmonary TB participants | 2851/11207 | 25.4 (24.6–26.3) | NA | NA | NA | NA |
| Bangladesh pulmonary TB | 1725/6100 | 28.3 (27.1–29.4) | 16.4 | 11.9 (10.7–13.0) | 1.72 (1.65–1.79) | <0.01 |
| Males | 1720/3848 | 44.7 (43.1–46.3) | 33.1 | 11.6 (10.0–13.2) | 1.35 (1.30–1.40) | <0.01 |
| Females | 5/2252 | 0.2 (0.0–0.4) | 0.7 | -0.5 (-0.7– -0.3) | 0.29 (0.0–0.57) | <0.01 |
| Pakistan pulmonary TB | 1126/5107 | 22.0 (20.9–23.2) | 11.5 | 10.5 (9.4–11.7) | 1.91 (1.82–2.02) | <0.01 |
| Males | 1098/3291 | 33.3 (31.8–35.0) | 20.6 | 12.7 (11.2–14.4) | 1.62 (1.54–1.70) | <0.01 |
| Females | 28/1816 | 1.5 (1.0–2.1) | 2.0 | -0.5 (-1.0–0.1) | 0.75 (0.50–1.05) | 0.16 |