Table 5.
Chi-squared testing of herd-level bovine herpesvirus-1 (BHV-1) seroprevalence (into quartiles) by herd size (in quartiles), in 1052 Irish study herds during 2009
| Herd-level BHV-1 seroprevalence | Herd size | Total | |||
|---|---|---|---|---|---|
| Lowest quartile | Second quartile | Third quartile | Highest quartile | ||
| Lowest quartile | 98a | 58 | 52 | 54 | 262 |
| Second quartile | 72 | 85 | 64 | 46 | 267 |
| Third quartile | 67 | 61 | 75 | 60 | 263 |
| Highest quartile | 55 | 43 | 64 | 98 | 260 |
Pearson Chi-square (9) = 57.1295, P < 0.001
a. That is, there were 98 herds with herd-level BHV-1 seroprevalence in the lowest quartile and herd size in the lowest quartile