Nondrainage after Laparoscopic Cholecystectomy for Acute Calculous Cholecystitis Does Not Increase the Postoperative Morbidity

Table 1

Clinical data and preoperative laboratory examination.

Parameters	Drainage group; (n = 106)	Nondrainage group; (n = 106)	P
Age ( years)	45±12	43±14	0.44
Sex (M:F)	45/51	50/56	0.23
Body wight (kg/m2)	23.2±2.4	24.5±2.2	0.17
ASA status (I/II/III)	55/40/11	50/42/14	0.26
Previous biliary symptoms (n, %)	78 (73.6%)	80 (75.5%)	0.32
Duration of acute symptoms (h)	24.5±19.5	25.2±20.4	0.29
Duration of symptoms >3 days (n, %)	67 (63.2%)	70 (66.1%)	0.34
Previous abdominal surgery (n, %)	18 (16.9%)	15 (14.1%)	0.22
Fever > 37.5C (n, %)	75(70.7%)	77(73.3%)	0.19
Leukocyte count > 10X 109/L (n, %)	76(71.7%)	72(67.9%)	0.24
Laboratory examination
Total bilirubin (umol/L)	21.7±3.5	22.5±4.8	0.15
Aspartate transaminase (U/l)	38.2±11.5	35.7±10.4	0.22
Alanine transaminase (U/l)	33.4±9.3	31.8±10.6	0.18
Alkaline phosphatase (IU/l)	110±23.7	100.5±25.1	0.14

–Whitney U for continuous variables, and the categorical variables were analyzed by the χ2 test or continuity correction method.