Table 1.
Univariate analysis of risk factors for cattle tuberculin reactors using General Linear models (GLM) with herd as random effect
| Risk factors | Proportional% (No/total) | OR | 95% CI | ( p -value) |
|---|---|---|---|---|
| Sex |
|
|
|
|
| Female |
2.07 (15/724) |
1.00* |
- |
- |
| Male |
3.17 (12/379) |
1.53 |
0.714; 3.29 |
0.27 |
| Age |
|
|
|
|
| <2 years |
1.30 (3/231) |
1.00* |
- |
- |
| 2–4 years |
3.6 (11/304) |
11.10 |
1.449; 85.062 |
0.02 |
| Over 4 years |
2.3 (13/568) |
4.96 |
0.642; 38.398 |
0.67 |
| Location |
|
|
|
|
| Serengeti |
2.64 (15/569) |
1.00* |
- |
- |
| Ngorongoro |
2.94 (11/374) |
1.12 |
0.508; 2.464 |
0.78 |
| Bunda |
0.63 (1/160) |
0.23 |
0.030; 1.772 |
0.16 |
| Animal tested |
|
|
|
|
| 1–20 |
3.5 (6/170) |
1.00* |
- |
-
|
| 21–40 |
1.9 (5/265) |
0.76 |
0.229; 2.545 |
0.66 |
| ≥ 41 |
2.4 (16/668) |
0.81 |
0.292; 2.243 |
0.69 |
| Household size |
|
|
|
|
| 1–5 |
1.30 (2/154) |
1.00* |
- |
- |
| 6–10 |
2.4 (6/248) |
1.12 |
0.369;3.413 |
0.84 |
| > = 11 | 2.7 (19/701) | 0.56 | 0.198;1.603 | 0.28 |
OR: Odds ration; CI: Confidence interval; p: p-value; *Reference level.