Table 1.

Demographic Information by Type of Drainage Procedure Performed^*

	PD (n = 359)	SD (n = 327)	P
Age	52.9 ± 0.87	52.3 ± 0.84	0.60†
APACHE II	11.1 ± 0.33	15.3 ± 0.42	<0.0001†
Acute Physiology Score	7.1 ± 0.27	11.1 ± 0.38	<0.0001†
Body mass index	28.9 ± 0.66	29.8 ± 0.88	0.42†
Maximum temperature	37.8 ± 0.05	37.9 ± 0.06	0.28†
White blood cell count	17.1 ± 0.43	16.5 ± 0.53	0.37†
Days to discharge	7 (0–14)	17 (3–31)	<0.0001‡
Gender	204 male/155 female	174 male/153 female	0.34§
Diabetes mellitus	75 (27.1%)	69 (24.3%)	0.42§
Hemodialysis	17 (4.7%)	27 (8.3%)	0.06§
Inflammatory bowel disease	25 (7.0%)	19 (5.8%)	0.54§
Immunosuppression	68 (18.9%)	101 (30.9%)	0.0003§
Intensive care unit care	79 (22.0%)	180 (55.0%)	<0.0001§
Mortality per infection	24 (6.7%)	61 (18.7%)	<0.0001§
Mortality per patient	11/260 (4.2%)	35/240 (14.6%)	0.0001§

^*Results are presented as mean ± SE, median (25 to 75%), or no. (%), and analyses are

^†independent t test,

^‡Mann-Whitney-U test, or

^§chi-square test.

PD, percutaneous drainage; SD, surgical drainage; APACHE, Acute Physiology and Chronic Health Evaluation.