Analgesic effect of parecoxib combined with ropivacaine in patients undergoing laparoscopic hepatectomy

Table 1 Demographic characteristics of the combined group and control group

Characteristic	Combined group	Control group	t/χ2 value	P-value
Age (yr)	48.958 ± 12.685	50.208 ± 9.86	-0.381	0.705
Gender
Male/Female	10/14	15/9	2.087	0.149
Body weight (kg)	68.368 ± 9.738	64.451 ± 8.652	1.473	0.148
ASA grade			0.543	0.762
I/II/III	4/15/5	6/13/5
Incision length (cm)	8.194 ± 0.415	7.992 ± 0.422	1.674	0.101
Operative time	136.083 ± 11.836	135.833 ± 11.484	0.074	0.941
Intraoperative bleeding volume	81.716 ± 14.737	79.116 ± 14.575	0.615	0.542
Maximum diameter of tumors	12.641 ± 5.075	10.705 ± 4.816	1.356	0.182

ASA: American Society of Anesthesiologists.