Table 2. Univariate association between potential risk factors and AIV prevalence in poultry farms in Dhamrai and Gazipur, Bangladesh.
| Group | No. of flock | Sample tested | M gene positive (+) (%) | 95% CI | χ2 | p value | |
|---|---|---|---|---|---|---|---|
| Type | Broiler | 10 | 250 | 16 (6.40) | 3.70–10.19 | 6.260 | 0.035 |
| Layer | 5 | 125 | 7 (5.60) | 2.28–11.20 | |||
| Sonali | 8 | 207 | 22 (10.63) | 6.78–15.65 | |||
| Location | Dhamrai | 8 | 203 | 15 (7.39) | 4.19–11.89 | 0.845 | 0.927 |
| Gazipur | 15 | 379 | 30 (7.92) | 5.40–11.11 | |||
| Flock density | Large (>1,500) | 8 | 200 | 20 (10.00) | 6.22–15.02 | 5.210 | 0.045 |
| Medium (1,000–1,500) | 10 | 260 | 20 (7.69) | 4.76–11.63 | |||
| Small (500–1,000) | 5 | 122 | 5 (4.10) | 1.34–9.31 | |||
| Biosecurity | Good | 4 | 102 | 4 (3.92) | 1.08–9.74 | 6.550 | 0.042 |
| Moderate | 8 | 208 | 12 (5.77) | 3.02–9.86 | |||
| Poor | 11 | 272 | 29 (10.66) | 7.26–15.95 | |||
| Total | 23 | 582 | 45 (7.73) | ||||
p = Probability value; 95% CI = 95% Confidence interval; χ2 = Chi-square value; + = Positive sample.