Table 2.
Odds ratios and effectiveness of the association between BCG vaccination and TB according to different diagnostic categories. Hospital Pediátrico David Bernardino (HPDB, Angola): January 2005–December 2006.
| Variable | Tuberculosis (all diagnostic categories) |
Control |
OR (95% CI) |
p value |
(1-OR) (%) (95% CI) |
||
|---|---|---|---|---|---|---|---|
| N | % | N | % | ||||
| BCG vaccination | |||||||
| No | 86 | 37.4 | 239 | 35.6 | 1.00 | ||
| Yes | 144 | 62.6 | 433 | 64.4 | 0.92 (0.68–1.26) |
0.62 | 8 (−26–32) |
| Total | 230 | 25.5 | 672 | 74.5 | |||
|
| |||||||
| Variable | Tuberculosis (confirmed diagnosis) |
Control |
OR (95% CI) |
p value |
(1-OR) (%) (95% CI) |
||
| N | % | N | % | ||||
|
| |||||||
| BCG vaccination | |||||||
| No | 20 | 35.7 | 239 | 35.6 | 1.00 | ||
| Yes | 36 | 64.3 | 433 | 64.4 | 0.99 (0.54–1.82) |
0.90 | 1 (−82%–46%) |
| Total | 56 | 7.7 | 672 | 92.3 | |||
|
| |||||||
| Variable | Tuberculosis (probable diagnosis) |
Control |
OR (95% CI) |
p value |
(1-OR) (%) (95% CI) |
||
| N | % | N | % | ||||
|
| |||||||
| BCG vaccination | |||||||
| No | 66 | 37.9 | 239 | 35.6 | 1.00 | ||
| Yes | 108 | 62.1 | 433 | 64.4 | 0.90 (0.63–1.29) |
0.62 | 10 (−29–37) |
| Total | 174 | 20.6 | 672 | 79.4 | |||
BCG: Bacille Calmette-Guérin; TB: tuberculosis; OR: odds ratio; CI: confidence interval; (1-OR) (%): BCG effectiveness.