Table 4.

Significant risk rate of pigs having a tail lesion score recorded (based on the severity score sheet, adapted from Kritas and Morrison (27)) by sample day of study #2.

Effect	Risk rate	Confidence interval	P-value
Day 1 vs. Day 15 (females)	3.67	1.52 – 8.88	0.004
Day 1 (females vs. males)	6.75	2.18 – 20.88	0.001
Day 8 vs. Day 15 (females)	3.40	1.55 – 7.48	0.003
Day 1 vs. Day 8 (males)	0.25	0.09 – 0.71	0.010