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

Table 2 Comparisons of the perioperative variables between two groups (n = 62)

Variables	No. (%) or mean ± SD
	Massive-lesion, n = 24	Smaller-lesion, n = 38	P value
Age, yr	36.6 ± 13.5	39.3 ± 11.8	0.426
BMI, kg/m2	22.8 ± 3.1	22.7 ± 2.8	0.07
Type 2 diabetes mellitus			0.289
Yes	3 (12.5)	1 (2.6)
No	21 (87.5)	37 (97.4)
Hypertension			0.927
Yes	4 (16.7)	6 (15.8)
No	20 (83.3)	32 (84.2)
ASA classification			0.678
Class I	17 (70.8)	25 (65.8)
Class II	7 (29.1)	13 (34.2)
Previous abdominal surgery			0.660
Yes	14 (58.3)	20 (52.6)
No	10 (41.7)	18 (47.4)
Previous treatment			0.027a
Yes	7 (29.2)	3 (7.9)
No	17 (70.8)	35 (92.1)
Symptomatic			0.416
Yes	12 (50.0)	15 (39.5)
No	12 (50.0)	23 (60.5)
Digital rectal examination			0.924
Positive	20 (83.3)	30 (78.9)
Negative	4 (16.6)	8 (21.1)
Tumor location			0.258
Above-S3	13 (54.2)	26 (68.4)
Under-S3	11 (45.8)	12 (31.6)
Tumor size, cm	11.5 ± 2.3	6.2 ± 1.5	0.000a
Operation duration, min	183.6 ± 57.5	104.7 ± 43.7	0.000a
Blood loss, mL	117.1 ± 175.7	30.3 ± 36.7	0.004a
Perioperative complications			0.027a
Yes	17 (70.8)	16 (42.1)
No	7 (29.2)	22 (57.9)
Severe complicationsa			0.022a
Yes	6 (25.0)	1 (2.6)
No	18 (75.0)	37 (97.4)
Postoperative length of hospital stay,d	7.7 ± 4.6	6.3 ± 2.9	0.111
Readmission within 90 d			0.019a
Yes	4 (16.6)	0 (0.0)
No	20 (83.3)	38 (100.0)

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

^aP value < 0.05 indicates the statistical difference.