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Table 2 Demographic data, laboratory characteristics, and neurophysiological studies of T2DM group I with DPN and group II without DPN

From: Serum 25(OH) vitamin D level and its relation to diabetic peripheral neuropathy in Egyptian patients with type 2 diabetes mellitus

Group variables T2DM group I
No = 40
Mean ± SD
T2DM group II
No = 20
Mean ± SD
t test/χ2 p value
Age (years) 47.85 ± 3.14 44.90 ± 3.54 3.287 0.002
Sex 0.857 0.355
 Females 25 (62.5%) 10 (50.0%)
 Males 15 (37.5%) 10 (50.0%)
DM duration (years) 10.87 ± 4.53 4.02 ± 3.88 5.783 0.000
FBG (mg/dl) 201.65 ± 75.18 131.65 ± 46.46 3.807 0.000
2hpp (mg/dl) 264.38 ± 81.11 177.70 ± 44.05 4.450 0.000
HbA1c % 8.31 ± 1.45 6.83 ± 1.65 3.541 0.001
Type of DPN
 Painless 18(45%)
 Painful 22(55%)
NDS   
 Mild 12 (30%)
 Moderate 7 (17.5%)
 Severe 21(52%)
Median motor nerve cv (m/s) 42.78 ± 8.72 59.05 ± 5.12 − 7.690 0.000
Median motor nerve amp (mv) 3.75 ± 1.61 6.23 ± 0.93 − 6.350 0.000
Peroneal motor nerve cv 31.85 ± 4.68 44.70 ± 4.43 − 10.200 0.000
Peroneal motor nerve amplitude 1.30 ± 0.40 3.34 ± 0.60 − 15.60 0.000
Median sensory nerve cv 31.68 ± 5.20 43.65 ± 3.99 − 9.046 0.000
Median sensory nerve amplitude (uv) 9.42 ± 4.940 24.70 ± 7.48 − 9.470 0.000
Sural sensory nerve cv 30.43 ± 6.17 42.50 ± 2.82 − 8.300 0.000
Sural sensory nerve amplitude 1.07 ± 0.42 5.43 ± 0.95 − 24.647 0.000
  1. NDS neuropathy disability scale, CV conduction velocity