title: [Prevalence of nephropathy in type I diabetes].
abstract: BACKGROUND
  Diabetic nephropathy is a serious complication of diabetes, of which there are few epidemiological data in Spain. The aim of this study is to determine diabetic nephropathy prevalence in a group of patients with type I diabetes mellitus, representative of the population of Barcelona, Spain, evaluating several risk factors related with its development.
  
  
  METHODS
  639 patients (296 males and 343 women), from 6 hospitals, selected according with the diabetes duration (194 between 5 and 9 years [group I], 227 between 10 and 19 years [group II] and 218 with 20 years or more [group III]) were studied. In all patients urinary albumin excretion and plasma levels of creatinine, HbA1c, cholesterol and triglycerides were determined. The presence of retinopathy, neuropathy, vasculopathy and tobacco consumption were also evaluated.
  
  
  RESULTS
  The prevalence of diabetic nephropathy increased with longer diabetes duration (8.1% [CI: 4.3-11.9] in group I, 24.7% [CI: 19.1-30.3] in group II and 44.7% [CI: 38.1-51.3] in group III), as well as that of hypertension, diabetes complications, cholesterol and triglycerides plasma levels. Related to people with normal renal function, after logistic regression, microalbuminuria was associated with hypertension and longer diabetes duration. Clinical nephropathy (macroalbuminuria + renal failure) to hypertension, longer duration, hypertriglyceridemia, male sex and tobacco consumption.
  
  
  CONCLUSIONS
  The prevalence of diabetic nephropathy in Barcelona area is high and similar to that observed in other european regions. Its existence is associated with other diabetic complications. In addition to the classic risk factors, tobacco consumption must also be considered as a factor for diabetic nephropathy.
authors.affiliation: Servicio de Endocrinología, Hospital Clínic i Provincial de Barcelona.
authors.forename: E
authors.initials: E
authors.lastname: Esmatjes
authors.forename: C
authors.initials: C
authors.lastname: Castell
authors.forename: A
authors.initials: A
authors.lastname: Goday
authors.forename: E
authors.initials: E
authors.lastname: Montanya
authors.forename: J M
authors.initials: JM
authors.lastname: Pou
authors.forename: I
authors.initials: I
authors.lastname: Salinas
authors.forename: R
authors.initials: R
authors.lastname: Simó
authors.forename: M T
authors.initials: MT
authors.lastname: González
authors.forename: R
authors.initials: R
authors.lastname: Tresserras
authors.forename: G
authors.initials: G
authors.lastname: Lloveras
mesh_terms: D000328:Adult; D003922:Diabetes Mellitus, Type 1 / Q000150:complications*; D003928:Diabetic Nephropathies / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D015995:Prevalence; D012307:Risk Factors; D013030:Spain / Q000453:epidemiology
vernacular_title: Prevalencia de nefropatía en la diabetes mellitus tipo I.