Table 5. Multivariate analysis of risk factors for postoperative pain in males and females.

Variables	OR (95% CI)	P
BMI, body mass index; HPT, heat pain threshold; PPT, pressure pain threshold; OR, odds ratio; 95% CI, 95% confidence interval.
Males
BMI≥28 (kg/m2)	2.63 (0.94−7.37)	0.066
Total gastrectomy	2.40 (1.16−5.01)	0.019
Preoperative anxiety score ≥8	4.31 (1.54−12.04)	0.005
HPT≤4.9 (s)	3.01 (1.33−6.82)	0.008
Females
Total gastrectomy	5.92 (1.67−20.99)	0.003
PPT≤4 (g)	5.02 (1.57−16.08)	0.004