Risk factors for perioperative complications in laparoscopic surgeries of retrorectal cystic lesions

Table 1 Comparisons of the perioperative variables between two groups (n = 62)

Variables	No. (%) or mean ± SD
	Above-S3, n = 39	Under-S3, n = 23	P value
Age, yr	38.7 ± 12.4	35.8 ± 13.8	0.387
BMI, kg/m2	23.5 ± 3.5	23.5 ± 4.2	0.963
Type 2 diabetes mellitus			0.623
Yes	2 (5.1)	2 (8.7)
No	37 (94.9)	21 (91.3)
Hypertension			0.356
Yes	5 (12.8)	5 (21.7)
No	34 (87.2)	18 (78.3)
ASA classification			0.744
Class I	27 (69.2)	15 (65.2)
Class II	12 (30.8)	8 (34.8)
Previous abdominal surgery			0.838
Yes	21 (53.8)	13 (56.5)
No	18 (46.2)	10 (43.5)
Previous treatment			0.836
Yes	6 (15.4)	4 (17.4)
No	33 (84.6)	19 (82.6)
Symptomatic			0.602
Yes	16 (41.0)	11 (47.8)
No	23 (59.0)	12 (52.2)
Digital rectal examination			0.764
Positive	31 (79.5)	19 (82.6)
Negative	8 (20.5)	4 (17.4)
Tumor size, cm	8.3 ± 3.5	8.2 ± 2.8	0.882
Operation duration, min	132.9 ± 66.2	139.4 ± 56.9	0.694
Blood loss, mL	61.8 ± 130.0	67.4 ± 101.8	0.860
Perioperative complications			0.146
Yes	18 (46.2)	15 (65.2)
No	21 (53.8)	8 (34.8)
Severe complications1			0.520
Yes	4 (10.3)	3 (13.0)
No	35 (89.7)	20 (87.0)
Postoperative length of hospital stay,d	6.5 ± 3.1	7.5 ± 4.4	0.296
Readmission within 90 d			0.524
Yes	3 (7.7)	1 (4.3)
No	36 (92.3)	22 (95.7)

¹Severe complications are defined as perioperative complications of Clavien-Dindo grade 3a or higher.