Predisposing factors and surgical outcome of complicated liver hydatid cysts

Table 2 Multinominal logistic regression analyses of factors influencing peritoneal and biliary perforation of liver hydatid cysts

Factor	Group I vs group III		Group II vs group III
	Odds ratio	95% CI	Odds ratio	95% CI
Sex
Male	1.00		1.00
Female	1.61	0.68-3.77	1.10	0.65-1.87
Age	0.59	0.41-0.84	1.30	1.07-1.57
Occurrence type
Primary occurrence	1.00		1.00
Recurrence	0.81	0.23-2.77	1.33	0.66-2.65
Localization
Unilobar	1.00		1.00
Bilateral	1.48	0.86-2.55	1.54	1.07-2.21
No. of cysts	1.21	0.65-2.23	1.80	1.30-2.50
Cyst diameter (cm)	1.11	1.04-1.19	1.12	1.07-1.57
Position
Superficial	1.00		1.00
Deep	0.27	0.09-0.84	1.40	0.18-4.33
Cyst infection
Positive	1.00		1.00
Negative	1.02	0.20-5.11	0.58	0.17-2.01

Group I = 28, group II = 93, group III = 251 (reference value).