Table 1 Clinical characteristics of the diabetic patients examined according to impaired versus unimpaired DML and CV of the median nerve for both hands
Distal motor latency (mean ± SD ms) (DML) | Conduction velocities (mean ± SD m/s) (CV) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Left hand | Right hand | Left hand | Right hand | |||||||||
Unimpaired | Impaired | Unimpaired | Impaired | Unimpaired | Impaired | Unimpaired | Impaired | P value | ||||
N = 30 | N = 41 | P value | N = 22 | N = 49 | P value | N = 48 | N = 23 | P value | N = 41 | N = 30 | ||
Mean = 3.4 ±0.2 ms | Mean = 4.6 ± 0.9 ms | Mean = 3.4 ± 0.3 ms | Mean = 4.9 ± 1.2 ms | Mean = 54.5 ± 3.5 m/s | Mean = 46.1 ± 2.8 m/s | Mean = 54.1 ± 3.4 m/s | Mean = 45.8 ± 2.7 m/s | |||||
Age (years) | 51.3 ± 16.8 | 56.9 ± 12.1 | ns | 52.3 ± 16.4 | 55.7 ± 13.3 | ns | 54.7 ± 15.4 | 54.4 ± 12.3 | ns | 52.8 ± 14.9 | 57.0 ± 13.4 | ns |
Gender | ns | |||||||||||
Women N(%) | 17(56.7%) | 20(48.8%) | ns | 10(45.5%) | 27(55.1%) | ns | 29(60.4%) | 8(34.8%) | 0.002 | 22(53.7%) | 15(50%) | |
Men N(%) | 13(43.3%) | 21(51.2%) | 12(54.5%) | 22(44.9%) | 19(39.6%) | 15(65.2%) | 19(46.3%) | 15(50%) | ||||
Type of diabetes | ns | |||||||||||
Type I N(%) | 12(40%) | 9(21.9%) | ns | 7(31.8%) | 14(28.6%) | ns | 14(29.2%) | 7(30.4%) | ns | 12(29.3) | 9(30%) | |
Type II N(%) | 18(60%) | 32(78.1%) | 15(68.2%) | 35(71.4%) | 34(70.8%) | 16(69.6%) | 29(70.7%) | 21(70%) | ||||
Duration of diabetes (yrs) | 13.6 ± 9.4 | 14.5 ± 11.1 | 0.03 | 12.5 ± 8.6 | 14.8 ± 11.1 | ns | 13.8 ± 11.1 | 14.7 ± 8.7 | ns | 12.2 ± 8.2 | 16.6 ± 12.3 | ns |
Hb A1C (%) | 8.4 ± 2.9 | 9.3 ± 1.9 | ns | 9.2 ± 2.2 | 8.8 ± 1.9 | ns | 8.4 ± 1.7 | 9.8 ± 2.1 | 0.004 | 8.5 ± 1.8 | 9.4 ± 2.1 | 0.05 |
BMI (kg/m2) | 30.5 ± 15.2 | 27.9 ± 4.9 | ns | 31.3 ± 17.2 | 28.0 ± 5.1 | ns | 29.3 ± 8.4 | 28.5 ± 6.6 | ns | 30.5 ± 13.1 | 27.1 ± 4.9 | ns |