Table 4.
Distribution of samples by days in milk and SCC level (threshold ≤50,000/>50,000 cells/mL).
| Cells/mL | Days in Milk | Total | |||||
|---|---|---|---|---|---|---|---|
| 5–60 | 61–120 | 121–180 | 181–240 | >240 | |||
| ≤50,000 | N | 238 a, 1 | 227 a | 145 b | 122 b | 169 c | 901 |
| % | 43.3% | 41.3% | 31.8% | 28.4% | 16.3% | 28.8% | |
| >50,000 | N | 312 a | 323 a | 311 b | 307 b | 868 c | 2,121 |
| % | 56.7% | 58.7% | 68.2% | 71.6% | 83.7% | 70.2% | |
| Total | N | 550 | 550 | 456 | 429 | 1037 | 3,022 |
| % | 18.4% | 18.4% | 15.2% | 14.3% | 33.8% | 100.0% | |
1 Columns with a different superscript are statistically different following a χ2 test (p < 0.05), suggesting a statistical difference comparing the frequency of cows among table cells.