title: Nutritional status and risk for disability in instrumental activities of daily living in older Brazilians.
abstract: OBJECTIVE
  The aim of the present study was to examine the association between nutritional status and the incidence of disability regarding instrumental activities of daily living (IADL) among older adults.
  
  
  METHODS
  The study is part of the longitudinal SABE (Saúde, Bem-Estar e Envelhecimento; Health, Wellbeing and Ageing) Study that began in 2000 (first wave) with a multistage, clustered, probabilistic sample (n 2143) of older adults (≥60 years). The second wave was carried out in 2006, when 1115 elders were re-interviewed. The dependent variable was the occurrence of disability in 2006 (report of difficulty on ≥1 IADL). Nutritional status (measured at baseline) was classified on the basis of BMI: ≤23·0 kg/m2 (underweight); >23·0 and <28·0 kg/m2 (ideal range - reference); ≥28·0 and <30·0 kg/m2 (overweight); and ≥30·0 kg/m2 (obesity).
  
  
  METHODS
  São Paulo, Brazil.
  
  
  METHODS
  One thousand and thirty-four individuals without difficulties regarding IADL in 2000 were selected, 611 of whom were re-interviewed in 2006.
  
  
  RESULTS
  In the multiple logistic regression analysis adjusted for baseline variables (gender, age, number of chronic diseases, stroke, osteoarthritis and cognitive status), underweight (OR = 2·03; P = 0·034) and obesity (OR = 1·79; P = 0·022) remained associated with disability.
  
  
  CONCLUSIONS
  Both underweight and obesity are associated with an increased risk of developing disability regarding IADL among older adults, in an independent fashion of other risk factors. Thus, adequate nutritional status is a key point to consider in the establishment of preventive measures.
authors.affiliation: 1 Department of Epidemiology, Faculty of Public Health, University of São Paulo, Avenida Doutor Arnaldo 715, 1 andar, CEP 01246-904, São Paulo, SP, Brazil.
authors.forename: Ligiana Pires
authors.initials: LP
authors.lastname: Corona
authors.affiliation: 2 Department of Medical Surgical Nursing, School of Nursing, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Tábatta Renata
authors.initials: TR
authors.lastname: Pereira de Brito
authors.affiliation: 2 Department of Medical Surgical Nursing, School of Nursing, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Daniella Pires
authors.initials: DP
authors.lastname: Nunes
authors.affiliation: 1 Department of Epidemiology, Faculty of Public Health, University of São Paulo, Avenida Doutor Arnaldo 715, 1 andar, CEP 01246-904, São Paulo, SP, Brazil.
authors.forename: Tiago
authors.initials: T
authors.lastname: da Silva Alexandre
authors.affiliation: 3 Department of Social Medicine, Faculty of Medicine of Ribeirao Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Jair Lício
authors.initials: JL
authors.lastname: Ferreira Santos
authors.affiliation: 2 Department of Medical Surgical Nursing, School of Nursing, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Yeda Aparecida
authors.initials: YA
authors.lastname: de Oliveira Duarte
authors.affiliation: 1 Department of Epidemiology, Faculty of Public Health, University of São Paulo, Avenida Doutor Arnaldo 715, 1 andar, CEP 01246-904, São Paulo, SP, Brazil.
authors.forename: Maria Lúcia
authors.initials: ML
authors.lastname: Lebrão
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D015992:Body Mass Index; D001938:Brazil / Q000453:epidemiology; D002908:Chronic Disease / Q000453:epidemiology; D004185:Disability Evaluation; D006233:Persons with Disabilities; D005260:Female; D005500:Follow-Up Studies; D015577:Geriatric Assessment; D006801:Humans; D016015:Logistic Models; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D051346:Mobility Limitation; D009752:Nutritional Status; D009765:Obesity / Q000453:epidemiology; D012307:Risk Factors; D013851:Thinness / Q000453:epidemiology