Table 7. Multivariate analysis of risk factors among the study participants TB patients and controls, at health centres in Addis Ababa, 2017: Cases = 260, Controls = 260.
| Characteristics | Cases (n) | Control (n) | COR (95% CI) |
AOR (95% CI) |
P-value |
|---|---|---|---|---|---|
| Educational status | |||||
| Illiterate | 41 | 18 | 2.51(1.40, 4.51) | 2.15(1.05, 4.40) | 0.034* |
| Literate | 219 | 242 | Reference | ||
| Size of the family* | |||||
| <4 | 138 | 116 | 1.75(1.18, 2.58) | 1.51(0.92, 2.46) | 0.098 |
| 4–6 | 70 | 103 | Reference | ||
| >6 | 52 | 41 | 1.86(1.12, 3.10) | 1.54(0.84, 2.79) | 0.154 |
| Average household monthly income* | |||||
| <1000 birrs | 77 | 40 | 2.60(1.65, 4.10) | 2.20(1.28, 3.78) | 0.004* |
| 1000–2000 birrs | 73 | 71 | 1.39(0.92, 2.09) | 1.30(0.8, 2.10) | 0.281 |
| >2000 birrs | 110 | 149 | Reference | ||
| Number of rooms** | |||||
| One | 140 | 99 | 2.29(1.47, 3.37) | 1.29(0.76, 2.18) | 0.332 |
| Two | 59 | 93 | Reference | ||
| Three or more | 61 | 68 | 1.41(0.87, 2.27) | 1.56(0.83, 2.93) | 0.160 |
| Number of windows* | |||||
| 0–1 | 181 | 145 | 2.13(1.43, 3.17) | 1.81(1.06, 3.07) | 0.028* |
| 2–3 | 55 | 94 | Reference | ||
| >3 | 24 | 21 | 1.95(0.99, 3.83) | 2.13(0.94, 4.79) | 0.067 |
| Members of household with TB* | |||||
| Yes | 43 | 19 | 2.51(1.42, 4.44) | 3.00(1.60, 5.62) | 0.001** |
| No | 217 | 241 | Reference | ||
| Smoking* | |||||
| Yes | 42 | 15 | 3.15(1.69, 5.83) | 4.43(2.10, 9.3) | <0.001* |
| No | 218 | 245 | Reference | ||
| BCG scar* | |||||
| Yes | 66 | 124 | 0.37(0.26, 0.54) | 0.34(0.22,0.54) | <0.001* |
| No | 194 | 136 | Reference | ||
| History of hospital admission* | |||||
| Yes | 37 | 16 | 2.53 (1.36, 4.67) | 3.39(1.64,7.03) | 0.001** |
| No | 223 | 244 | Reference | ||
Notes:
*Variables that showed significant association during bivariate analysis at p<0.05.
Abbreviations: TB: tuberculosis; COR: crude odds ratio, AOR: Adjusted odds ratio, CI: confidence interval.