title: Prevalence and risk factors of somatic and autonomic neuropathy in prediabetic and diabetic patients.
abstract: OBJECTIVE
  To investigate the prevalence and correlates of somatic and autonomic neuropathies concurrently in prediabetic and diabetic subjects in the general population.
  
  
  METHODS
  Nerve conduction and heart rate variability studies were used for detecting both types of diabetic neuropathy. Of 1,576 inhabitants, 143 persons were identified as prediabetic or having diabetic mellitus. One hundred and thirty-three persons completed a nerve conduction test and 118 persons a valid heart rate variability test. Significant correlates responsible for diabetic neuropathies were also collected.
  
  
  RESULTS
  The prevalence rates of definite, probable and no somatic neuropathy were 9.0% (12/133), 20.3% (27/133) and 70.7% (94/133), respectively. The corresponding figures for autonomic neuropathy were 14.4% (17/118), 54.2% (64/118) and 31.4% (37/118). The prevalence rate for the presence of both neuropathies was 16.9%. In a univariate analysis, age, renal insufficiency, HbA1c and fasting glucose level were significantly associated with somatic neuropathy whereas only systolic blood pressure was statistically significantly associated with autonomic neuropathy. In a multivariate analysis, systolic blood pressure and fasting glucose level were positively associated with somatic neuropathy and systolic blood pressure remained statistically significant for autonomic neuropathy.
  
  
  CONCLUSIONS
  The prevalence of autonomic neuropathy is twofold compared with somatic neuropathy. Concurrence of the two kinds of neuropathy was approximately half of sole somatic neuropathy and a quarter of sole autonomic neuropathy. Systolic blood pressure and fasting glucose level were related to somatic neuropathy whereas only systolic blood pressure was correlated with autonomic neuropathy.
authors.affiliation: Department of Neurology, Shin-Kong WHS Memorial Hospital, Taipei, Taiwan.
authors.forename: Wei-Chih
authors.initials: WC
authors.lastname: Hsu
authors.forename: Amy Ming-Fang
authors.initials: AM
authors.lastname: Yen
authors.forename: Horng-Huei
authors.initials: HH
authors.lastname: Liou
authors.forename: Han-Cheng
authors.initials: HC
authors.lastname: Wang
authors.forename: Tony Hsiu-Hsi
authors.initials: TH
authors.lastname: Chen
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000453:epidemiology; D015897:Comorbidity; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology*; D003929:Diabetic Neuropathies / Q000175:diagnosis / Q000453:epidemiology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction; D011236:Prediabetic State / Q000453:epidemiology*; D015995:Prevalence; D012307:Risk Factors; D013624:Taiwan / Q000453:epidemiology