Table 3.

Univariate analysis for predictive factors of the incidence of CRBD (CRBD≥1) and the severity CRBD (CRBD≥2). Data are presented as number (%)

Variable	n	CRBD≥1 (incidence)	P	CRBD≥2 (severity)	P
Age
≥ 50 y	100	78 (78.0)	0.001	51 (51.0)	0.031
<50 y	307	185 (60.3)		119 (38.8)
Sufentanil dosage
>20μg	180	121 (67.2)	0.328	78 (43.4)	0.569
≤ 20μg	227	142 (62.6)		92 (40.5)
Surgery duration time
>180 min	90	56 (62.2)	0.59	32 (35.6)	0.176
≤ 180 min	317	207 (65.3)		138 (43.5)
Type of surgery:
Laparoscopic surgery	278	175 (62.9)	0.009	115 (41.4)	0.032
Open abdominal surgery	80	47 (58.8)		27 (33.8)
Cervical conization and pelvic reconstructive surgery	49	41 (83.7)		28 (57.1)
Type of laparoscopic surgery:
Uterus-related laparoscopic surgery	158	113 (71.5)	0.002	78 (49.4)	0.004
Non-uterine related laparoscopic surgery	121	66 (54.5)		40 (33.0)
Occasion of catheterization:
Before anaesthesia	68	39 (57.4)	0.170	22 (32.4)	0.085
After anaesthesia	339	224 (66.1)		148 (43.7)
Additional analgesics:
Yes	54	25 (46.3)	0.002	11 (20.4)	0. 001
No	353	238 (67.4)		159 (45.0)
Intraoperative atropine:
Yes	121	84 (69.4)	0.188	55 (45.5)	0.327
No	286	179 (62.6)		115 (40.2)
Postoperative neostigmine and atropine:
Yes	54	35 (64.8)	0.974	25 (46.3)	0.469
No	353	228 (63.6)		145 (41.1)
Postoperative pain:
VAS ≥ 4	139	100 (71.9)	0.026	70 (50.4)	0.011
VAS ≤ 3	268	163 (60.8)		100 (37.3)