Risk factors for mortality in postoperative peritonitis in critically ill patients

Table 1 Baseline characteristics, severity scores and initial surgery n (%)

	All patients (n = 201)	Non-survivors (n = 63)	Survivors (n = 138)	P
Age (yr)	63 ± 15	69 ± 12	61 ± 16	< 0.001
Sex, male	133 (66)	46 (73)	87 (63)	0.199
Origin of patients
Rennes University Hospital	132 (66)	44 (70)	88 (64)	0.4
Other hospitals	69 (34)	19 (30)	50 (36)
Hospitalization in the previous 3 mo, yes	78 (39)	24 (38)	54 (39)	1
Immunosuppression, yes	33 (16)	9 (14)	24 (17)	0.581
Antimicrobial therapy in the past 3 mo, yes	54 (26)	16 (25)	38 (28)	0.751
MacCabe score
Class A	57 (28)	11 (18)	46 (34)	0.036
Class B	107 (53)	36 (57)	71 (51)
Class C	37 (19)	16 (25)	21 (15)
SAPS II	48 ± 19	60 ± 25	43 ± 14	< 0.001
APACHE II	20 ± 8	24 ± 11	18 ± 6	< 0.001
SOFA	7 ± 4	8 ± 5	6 ± 4	< 0.001
Urgent initial surgery	69 (34)	22	47	0.905
Site of the initial surgery
Colorectal	82 (41)	25 (40)	57 (41)	0.363
Liver - biliary - pancreas	48 (24)	15 (24)	33 (24)
Oesophagus - gastro-duodenal - small bowel	60 (30)	22 (35)	38 (28)
Others	11 (5)	1 (1)	10 (7)

Data are expressed as the mean ± SD or as the number of patients (percentages). SAPS II: Simplified acute physiological score II; APACHE II: Acute physiology and chronic health evaluation II; SOFA: Sequential organ failure assessment.