Peripheral sensory neuropathy in type 2 diabetes patients: A case control study in Accra, Ghana

•PSN was assessed by symptoms, examination and quantitative assessment.•High burden of PSN in diabetes patients in Ghana.•The major determinants of PSN using different assessment methods were reported.

ObjectivePeripheral sensory neuropathy (PSN) is a common cause of ulceration and amputation in diabetes (DM) patients. The prevalence of PSN in DM patients is largely undetermined in sub-Saharan African population. We studied the burden of PSN in DM patients using a validated questionnaire and quantitative sensory test.MethodsIn a case-control design, PSN was measured in 491 DM patients and 330 non-DM controls using Michigan neuropathy screening instrument (MNSI) and vibration perception threshold (VPT). PSN was defined as MNSI symptom score ≥7, MNSI examination score ≥2 or VPT ≥25V.ResultsThe prevalence of PSN screened by MNSI symptom score, MNSI examination score and VPT was 7.1%, 51.5% and 24.5% in DM patients; and 1.5%, 24.5% and 8.5% in non-DM participants respectively. The major determinants of PSN screened by MNSI examination score were diabetes status [OR (95% CI): 4.31 (2.94–6.31), p < 0.001], age [1.03 (1.01–1.05), p < 0.001], previous [4.55 (2.11–9.82), p < 0.001] and current [8.16 (3.77–17.68), p < 0.001] smoking status. The major determinants of PSN screened by VPT were diabetes status [1.04 (1.02–1.06), p < 0.001], age [1.02 (1.01–1.03), p = 0.047], heart rate [1.78 (1.08–2.92), p = 0.023], second-hand smoking [3.66 (2.26–5.95), p < 0.001] and body height [3.28 (1.65–8.42), p = 0.015].ConclusionOur study has shown high burden of PSN in DM patients in Ghana using simple, accurate, and non-invasive screening tools like MNSI and neurothesiometer.