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Prevalence of reproductive disorders associated with herd size.
| Variables | No. of cows | Affected no. | Nonaffected no. | P value | Chi-square value |
|---|---|---|---|---|---|
| Small (≤50) | 191 | 15 (7.85%) | 176 (92.15%) | 0.01 | 8.96 |
| Medium (51 to 150) | 759 | 56 (7.38%) | 727 (95.78) | ||
| Large (>150) | 2009 | 93 (4.63%) | 1892 (94.18) |
