Table 3 Multivariable-adjusted intakes of selected nutrients of type 2 diabetics participants with foot ulcer across tertiles of DPI index (n = 339)

Energy (Kcal/d)

2237.1 (53.1)

2158.8 (53.0)

1931.0 (53.1)

< 0.01

Carbohydrates (% of energy)

48.6 (0.8)

49.4 (0.8)

55.3 (0.8)

< 0.01

Proteins (% of energy)

15.8 (0.3)

15.0 (0.3)

15.0 (0.3)

0.13

Fats (% of energy)

16.4 (0.3)

16.2 (0.3)

14.5 (0.3)

< 0.01

Potassium (mg/d)

2472.8 (74.0)

2629.0 (73.4)

2630.8 (74.6)

0.22

Selenium (mg/d)

0.08 (0.0)

0.08 (0.0)

0.06 (0.0)

< 0.01

Iron (mg/d)

15.4 (0.3)

15.08 (0.3)

15.3 (0.3)

0.72

Magnesium (mg/d)

203.0 (5.5)

218.8 (5.5)

210.3 (5.6)

0.12

Zinc (g/d)

9.9 (0.3)

9.7 (0.3)

8.7 (0.3)

0.01

Fiber (g/d)

14.1 (0.5)

16.7 (0.5)

18.9 (0.5)

< 0.01

Vitamin K (mcg/d)

103.0 (7.9)

108.5 (7.8)

113.6 (8.0)

0.65

Vitamin D (mcg/d)

0.5 (0.1)

0.6 (0.1)

0.4 (0.1)

0.55

Vitamin A (RE/d)

846.4 (86.5)

929.9 (85.8)

1074.9 (87.1)

0.18

Beta-Carotene (mcg/d)

389.8 (54.7)

415.8 (54.2)

450.3 (55.1)

0.74

Vitamin E (mg/d)

13.1 (0.9)

13.4 (0.9)

10.7 (0.9)

0.08

Vitamin C (mg/d)

92.0 (7.7)

114.8 (7.6)

136.5 (7.7)

< 0.01

Vitamin B1 (mg/d)

1.87 (0.03)

1.83 (0.03)

1.94 (0.03)

0.05

Vitamin B2 (mg/d)

1.66 (0.05)

1.55 (0.05)

1.59 (0.05)

0.33

Vitamin B3 (mg/d)

21.6 (0.4)

20.1 (0.4)

20.3 (0.4)

0.01

Vitamin B6 (mg/d)

1.53 (0.06)

1.45 (0.06)

1.52 (0.06)

0.61

Vitamin B9 (mcg/d)

185.6 (8.3)

207.2 (8.3)

219.2 (8.4)

0.01

Vitamin B12 (mcg/d)

4.64 (0.75)

3.67 (0.74)

4.41 (0.75)

0.63