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Table 4 Vitamin D level among the studied groups

From: Impact of vitamin D level in diabetic people with peripheral neuropathy

Item Group A (n = 20) Group B (n = 20) Group C (n = 20) Control group (n = 20) χ2/KWt p-value
n % n % n % n %
Vitamin D level
 Mean ± SD 17.4 ± 10.9 18.9 ± 8.49 20.12 ± 9.55 32.1 ± 7.9* 63.39 0.000* (HS)
 Median (range) 15.3(5.3–40.5) 17 (6.5–35.5) 17.9 (5.3–36.5) 31.2 (16.3–53)
Vitamin D status
 Deficient (< 20 ng/dl) 14 70% 12 60% 13 65% 1 5% 22.33 0.001* (HS)
 Insufficient (20–30 ng/dl) 3 15% 3 15% 3 15% 7 35%
 Sufficient (≥ 30 ng/dl) 3 15% 5 25% 4 20% 12 60%
  1. χ2: Chi-square test; KWt: Kruskal–Wallis test; HS: highly significant