Table 4. Multivariate analysis of risk factors for postoperative pain.

Variables	OR (95% CI)	P
BMI, body mass index; OR, odds ratio; 95% CI, 95% confidence interval; PPT, pressure pain threshold; CPT, cold pain threshold; HPT, heat pain threshold.
Female	1.99 (1.04−3.83)	0.039
BMI≥28 (kg/m2)	2.67 (1.07−6.67)	0.036
Smoking	0.72 (0.35−1.49)	0.376
Open gastrectomy	0.90 (0.48−1.67)	0.733
Total gastrectomy	2.64 (1.42−4.91)	0.002
Preoperative anxiety score ≥8	2.37 (1.12−5.02)	0.024
Preoperative depression score ≥8	0.69 (0.21−2.28)	0.541
PPT≤4 (g)	2.05 (1.05−4.03)	0.037
CPT≤6.7 (s)	1.10 (0.52−2.31)	0.805
HPT≤4.9 (s)	2.14 (1.06−4.32)	0.034