Table 3 Univariate and multivariate logistic analyses for early postoperative ambulation in patients with gastrointestinal tumors (male group)

a. Univariate analysis

 Preoperative grip strength (kg)

0.115

1.121 (1.077, 1.167)

 < 0.001

 Serum HGB < 120 g/day (male) or < 110 g/day (female)

0.634

1.886 (1.036, 3.431)

0.038

 Serum ALB < 35 g/L

0.966

2.629 (1.163, 5.940)

0.020

 Preoperative NRS 2002 score ≥ 3

 − 0.672

0.511 (0.306, 0.852)

0.010

 Operative time (h)

 − 0.255

0.775 (0.639, 0.938)

0.009

 Postoperative indwelling tube number

 − 0.336

0.714 (0.557, 0.917)

0.008

 Application of analgesic pump

0.732

2.079 (1.170, 3.693)

0.013

b. Multivariate analysis

 Preoperative grip strength (kg)

0.103

1.109 (1.057, 1.163)

 < 0.001

 Serum HGB < 120 g/day (male) or < 110 g/day (female)

0.053

1.054 (0.506, 2.195)

0.888

 Serum ALB < 35 g/L

0.101

1.106 (0.396, 3.091)

0.847

 Preoperative NRS 2002 score ≥ 3

0.056

1.058 (0.564, 1.985)

0.861

 Operative time (h)

 − 0.141

0.869 (0.704, 1.072)

0.189

 Postoperative indwelling tube number

 − 0.407

0.666 (0.499, 0.889)

0.006

 Application of analgesic pump

0.692

1.998 (0.958, 4.168)

0.065

 Constant values

 − 1.286

0.276

0.202