Table 3 Comparison of serum vitamin levels between the preoperative and 1-month postoperative period.

From: The strategy of vitamin supplementation in Chinese patients with gastric cancer after gastrectomy: a prospective cohort study

Project

Time

Experimental group

Control group

P-valuea

Folic acid (ng/mL)

Preoperative

4.94 (3.78–6.94)

4.33 (3.76–5.77)

0.139

1-month postoperative

5.79 (4.00-7.64)

4.88 (4.09–6.43)

0.252

Difference value

0.65 (-0.39-2.23)

0.10 (-0.71-2.42)

0.674

Vitamin B12 (pg/mL)

Preoperative

289.71 (228.87-354.24)

286.36 (223.96-376.17)

0.749

1-month postoperative

322.28 (264.90-404.10)

295.98 (266.60-344.09)

0.265

Difference value

41.18 (-11.98-136.05)

20.51 (-82.24-69.92)

0.113

25-hydroxyvitamin D(ng/mL)

Preoperative

8.94 (8.08–9.54)

8.91 (8.15–9.38)

0.719

1-month postoperative

9.12 (8.21–10.43)

8.78 (7.80–9.80)

0.193

Difference value

0.41 (-0.84-1.27)

0.15 (-0.78-0.79)

0.435

Vitamin B1 (nmol/L)

Preoperative

55.34 (48.95–60.19)

52.06 (48.22–61.59)

0.708

1-month postoperative

62.18 (53.85–68.84)*

55.18 (51.34–64.89)

0.069

Difference value

9.23 (0.87–17.18)

1.69 (-3.72-12.98)

0.045*

  1. *P-value < 0.05 versus preoperative serum vitamin levels in the experimental group or control group. aCalculated by the Wilcoxon rank sum test.
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