Table 4.

Characteristics of patients with or without post-operative complications

	With complications			Without complications
Characteristics	n	Mean (SD)	Standard error	n	Mean (SD)	Standard error	p-value
Age (years)	156	33.5 (6.5)	3.55	332	32.0 12.5)	2.76	0.382
Male	95			202			0.758
Female	61			130
Time from onset of symptom to hospital admission (hours)	156	58.0 (17.5)	10.60	332	26.7 (5.2)	4.3	0.001
Time from hospital admission to surgery (hours)	156	37.4 (12 .6)	7.91	332	16.8 ( 7.5)	4.6	0.0001
Duration of operation (hours)	156	4.5 (1.7)	0.75	332	2.3 (1.5)	0.25	0.005
Hospital stay (days)	156	17.0 (4.9)	3.20	332	5.8 (3.7)	1.6	0.001