Table 3. Postoperative Data for the Open Gastrectomy (OG) and Laparoscopic Gastrectomy (LG) Groups.

	OG group (n = 63)	LG Group (n = 60)	P value
Pain NRS score at rest (0-10)
24 h	5.1 ± 1.9	4.2 ± 1.8	0.007*
48 h	4.5 ± 1.8	3.5 ± 1.5	0.001*
72 h	3.4 ± 1.6	2.4 ± 1.1	< 0.001*
Pain NRS score at coughing (0-10)
24 h	7.1 ± 1.7	6.3 ± 1.7	0.007*
48 h	6.7 ± 1.6	5.5 ± 1.6	< 0.001*
72 h	5.5 ± 1.9	4.2 ± 1.6	< 0.001*
Cumulative IV PCA consumption at 72 h (ml)	52.6 ± 9.9	47.8 ± 11.9	0.017*
Cumulative rescue meperidine consumption (mg)	183.7 ± 104.1	112.5 ± 114.1	< 0.001*
Time to the first out of bed (h)	25.8 ± 8.7	22.3 ± 4.7	0.007*
Time to first ward ambulation (h)	27.3 ± 11.1	22.8 ± 5.4	0.006*
Time to pass flatus (days)	4.4 ± 0.9	3.9 ± 0.7	0.002*
Length of hospital stay (days)	8.4 ± 1.1	7.8 ± 1.5	0.018*

Data are expressed as the means ± SD. NRS: numerical rating scale, IV PCA: intravenous patient-controlled analgesia. ^*Statistically significant difference (P < 0.05).