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Table 1 Demographic characteristics of 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 p-value
n % n % n % n %
Age (years)
 Mean ± SD 54.30 ± 6.92 57.85 ± 9.23 57.55 ± 7.29 54.55 ± 8 2.34 0.504 (NS)
 Median (range) 53.5 (45–65) 57 (47–86) 58.5 (45–70) 51 (40–66)   
Seasonal collection
 Summer 18 90% 15 75% 17 85% 14 70% 1.731 0.629 (NS)
 Winter 2 10% 5 25% 3 15% 6 30%
Residence
 Rural 16 80% 12 60% 15 75% 13 65% 3.73 0.291 (NS)
 Urban 4 20% 8 40% 5 25% 7 35%
Sex
 Male 10 50.0% 10 50.0% 9 45.0% 6 30.0% 2.18 0.535 (NS)
 Female 10 50.0% 10 50.0% 11 55.0% 14 70.0%
  1. Continuous data are represented as mean ± SD; categorical data are represented as number and percentage
  2. n: number, %: percentage, χ2: Chi-square test, NS: not significant