Factors associated with diabetic polyneuropathy‐related sensory symptoms and signs in patients with polyneuropathy: A cross‐sectional Japanese study (JDDM 52) using a non‐linear model

Aims/Introduction To assess the prevalence of diabetic polyneuropathy (DPN)‐related sensory symptoms/signs and associated factors in patients with polyneuropathy, considering non‐linear effects for numerical variables. Materials and Methods A cross‐sectional survey of patients with type 2 diabetes mellitus from 17 primary care clinics across Japan was carried out. DPN and DPN‐related sensory symptoms/signs were diagnosed according to the Diabetic Neuropathy Study Group in Japan criteria. Results Of the 9,914 patients with type 2 diabetes mellitus in this study, 2,745 had DPN and 1,689 had DPN‐related sensory symptoms/signs (61.5% of patients with DPN). There were significant correlations between DPN‐related sensory symptoms/signs and smoking status (odds ratio 2.04 for current and 1.64 for former; P