Table 2.

Results of univariable logistic regression to identify continuous variables as risk factors for all-cause mortality in 492 cats hospitalized by the soft tissue surgery service at a veterinary teaching hospital

Risk factors	Cats with available data (n = 492)	Survivors (n = 462)	Non-survivors (n = 30)	OR description	OR	95% CI	P value
Significant factors
Anesthesia duration (h)	486/492 (98.8)	2.43 ± 1.02	2.84 ± 1.45	Per hour	1.4	1.1–2.1	0.049
Non-significant factors
Age (years)	454/492 (92.3)	6.96 ± 4.81	7.61 ± 4.94	Per 1 year	1.03	0.95–1.04	0.475
Body weight (kg)	454/492 (92.3)	4.65 ± 1.53	4.23 ± 1.76	Per 1 kg	0.83	0.6–1.1	0.143
BCS	454/492 (92.3)	5.32 ± 1.73	4.88 ± 1.90	Per 1 increase in score	0.9	0.7–1.1	0.225
Surgery duration (h)	454/492 (92.3)	1.41 ± 1.44	1.64 ± 1.20	Per hour	1.1	0.9–1.3	0.433
Heart rate (bpm)	412/462 (89.2)	193.48 ± 31.57	188.46 ± 39.47	Per 10 bpm	1.0	0.8–1.1	0.442

Data are n (%) or mean ± SD unless otherwise indicated

BCS = body condition score; bpm = beats per minute; CI = confidence interval; OR = odds ratio