Table 4.

Univariable associations^a at the 20% level between perioperative characteristics and the number of days of hospitalization (on its original scale) of mares with dystocia undergoing general anesthesia

Variable	Coefficient	95% CI	P-value
Type of delivery			16.17b (< 0.001)
Controlled vaginal	ref	ref	ref
Fetotomy under GA	−0.47	−1.08–0.14	0.128
Caesarean section	0.88	0.41–1.36	0.001
Total anesthesia time (h)	1.99	0.82–3.16	0.001
Time between epidural administration and recovery start from GA
< 3.77 h	ref	ref	ref
> 3.77 h	0.31	0.09–0.53	0.009
Breed typec			4.75b (0.006)
Hot-blood	ref	ref	ref
Warm-blood	10.52	4.64–16.39	0.001
Draft	−1.82	−6.48–2.85	0.437
Miniature	0.18	−4.97–5.34	0.943
Oxytocin administration
No	ref	ref	ref
Yes	2.863	−0.14–5.86	0.061
Day of the week
Weekday	ref	ref	ref
Weekend day	−2.40	−5.52–0.71	0.128
Preoperative PCV (%)	−0.22	−0.53–0.10	0.182
Preoperative TP			1.70b (0.194)
≤ 67 g/L	ref	ref	ref
> 67 to ≤ 73 g/L	−3.567	−7.72–0.59	0.091
> 74 g/L	−3.067	−7.22–1.09	0.144

^aArranged by level of significance.

^bF-test ( P-value) for all categories of the predictor.

^cFor breed type see legend for Table 2.

CI — confidence interval.

For abbreviations see legend for Table 1.