Table 2 Intraoperative and postoperative indicators after PSM by SPN group

Operative duration (min)

188.59 ± 50.24

186.11 ± 43.31

0.932

Laparoscopic surgery

0.656

 Yes

53 (82.8%)

50 (78.1%)

 No

11 (17.2%)

14 (21.9%)

Jejunostomy

0.352

 Yes

19 (29.7%)

25 (39.1%)

 No

45 (70.3%)

39 (60.9%)

Operative procedure

0.722

 Subtotal gastrectomy

37 (57.8%)

34 (53.1%)

 Total gastrectomy

27 (42.2%)

30 (46.9%)

Total energy during POD3-7 (kcal/d)

1609 ± 275

1137 ± 255

< 0.001

Mean energy during POD3-7 (kcal/d)

27.28 ± 8.46

19.94 ± 6.92

< 0.001

Total protein during POD3-7 (g/d)

58.81 ± 7.23

41.30 ± 7.14

< 0.001

Mean protein during POD3-7 (g/d)

1.00 ± 6.83

0.72 ± 4.68

< 0.001

Nutritional indicators at POD 7

 Albumin (g/L)

34.44 ± 3.33

34.56 ± 3.12

0.786

 Hemoglobin (g/L)

112.70 ± 17.72

114.58 ± 18.45

0.175

Inflammatory indicators at POD 7

 White blood cells (10⁹/L)

8.45 ± 3.07

8.80 ± 3.11

0.147

 Neutrophil percentage (%)

73.55 ± 8.65

73.82 ± 9.42

0.905

 C-reactive protein (g/L)

78.59 ± 40.97

79.48 ± 38.72

0.444

ALT at POD7 (U/L)

33.60 ± 32.14

30.52 ± 20.82

0.571

 AST at POD7 (U/L)

26.49 ± 16.94

23.85 ± 10.72

0.423

 Postoperative hospital stay (days)

8.11 ± 6.00

10.38 ± 7.73

0.045

 Total hospitalization costs (¥)

81056.17 ± 25054.92

82323.26 ± 24011.97

0.374

 Drug costs (¥)

20628.37 ± 10819.67

20477.64 ± 12327.1

0.329