Table 4.

Influencing factors to postoperative used rescue analgesia: Single-factor analysis

		RAN n = 406 (41.86%)	RAY n = 564 (58.14%)	p value	OR value	95% CI of OR
Tumor location (1), n (%)	Esophagus or stomach a	76 (22.75%)	204 (41.89%)	<  0.001 b
	Transverse colon	5 (1.50%)	7 (1.44%)	0.279	0.522	0.161	1.693
	Left colon	5 (1.50%)	20 (4.11%)	0.441	1.490	0.540	4.111
	Right colon	28 (8.38%)	39 (8.01%)	0.020 b	0.519	0.299	0.901
	Sigmoid flexure	35 (10.48%)	29 (5.95%)	<  0.001 b	0.309	0.177	0.539
	Rectum	177 (52.99%)	167 (34.29%)	<  0.001 b	0.352	0.251	0.493
	Jejunum or ileum	8 (2.40%)	21 (4.31%)	0.959	0.978	0.416	2.301
Tumor location (2), n (%)	Lower abdominal tumor a	240 (71.86%)	235 (48.25%)
	Upper abdominal tumor	94 (28.14%)	252 (51.75%)	<  0.001 b	2.738	2.034	3.686
Type of surgery (1), n (%)	Laparotomy a	260 (70.65%)	469 (83.45%)	<  0.001 b
	Laparoscopically surgery	104 (28.26%)	82 (14.59%)	<  0.001 b	0.437	0.315	0.606
	Superficial abdominal wall surgery	3 (0.82%)	9 (1.0%)	0.448	1.663	0.446	6.197
	Laparoscopic to open surgery	1 (0.27%)	2 (0.36%)	0.933	1.109	0.100	12.286
Type of surgery (2), n (%)	Laparoscopically surgery a	104 (28.57%)	82 (14.88%)
	Laparotomy	260 (71.43%)	469 (85.12%)	<  0.001 b	2.288	1.650	3.172
The use of parecoxib sodium during surgery (Unused a)		94 (23.15%)	179 (31.74%)	<  0.003 b	1.543	1.154	2.064
Number of types of intraoperative long-acting analgesics used, n (%)	0 a	80 (19.70%)	53 (9.40%)	<  0.001 b
	1	312 (76.85%)	491 (87.06%)	<  0.001 b	2.375	1.633	3.456
	2	14 (3.45%)	20 (3.55%)	0.049 b	2.156	1.002	4.639

Abbreviation: OR = Odds ratio, CI = Confidence interval, % = Percentage(s)

^a Reference variable

^b The difference was statistically significant, p < 0.05