The impact of vitamin D supplementation on peripheral neuropathy in a sample of Egyptian prediabetic individuals

· Data file 1: prediabetic patients without peripheral neuropathy and their descriptive and laboratory data. · Data file 2: prediabetic with peripheral neuropathy and their descriptive, laboratory data, McGill Pain Questionnaire, clinical examination for neuropathy before vitamin D supplementation.<i></i> · Data file 3: prediabetic with peripheral neuropathy and their descriptive and laboratory data, McGill Pain Questionnaire, clinical examination for neuropathy after Vitamin D supplementation. <i></i>