Table 4.

Odds ratios for piglet mortality in litters with vitality scores 1–3 compared to litters with vitality score 4 and probabilities [%] for piglet mortality per vitality score category. SE = Standard error.

Vitality Score	Reference Group	Odds Ratio	95% Confidence Interval		Probability for Mortality	SE
1	4	4.173	1.217	14.311	0.812	0.104
2	4	8.671	4.160	18.074	0.900	0.039
3	4	3.690	2.946	4.621	0.792	0.032
4	-	-	-	-	0.508	0.040