Article Text


Epidemiology and policy
P1-71 Incidence and determinants of disability in instrumental activities of daily living (IADL) in elderly
  1. T da S Alexandre1,
  2. L P Corona1,
  3. D P Nunes1,
  4. J L F Santos2,
  5. Y A de Oliveira Duarte3,
  6. M L Lebrão1
  1. 1Department of Epidemiology, University of Sao Paulo, Sao Paulo, Brazil
  2. 2Department of Social Medicine, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
  3. 3Department of Nursing Medical Surgery, University of Sao Paulo, Sao Paulo, Brazil


Introduction Knowing the incidence of disability in IADL in elderly is very important for planning health services.

Objective To analyse the incidence rate and determinants of disability in IADL in elderly people.

Methods Data comes from two rounds of a longitudinal survey - SABE study, which began in 2000 with a multistage clustered sampling which included 2143 people aged ≥60 years old living in Sao Paulo/Brazil. In 2000, 1034 elders without disabilities in IADL were selected. In 2006, the same activities were reanalysed and the incidence rate of disability was calculated based in a sample of 801 elderly. Logistic regression used IADL status in 2006 and in baseline: age, living condition, ability to write and read, marital status, smoking, medication, body mass index, physical activity, MMSE, depression, perception of vision and hearing, handgrip, self-report of hypertension, diabetes, heart and lung disease, osteoarthritis, cancer, stroke, join pain, falls, hip fracture or wrist and number of comorbidities. Inferences were weighted to account for sample design.

Results The incidence of disability for women was 44.7/1000 person-years (95% CI 36.7 to 54.8) and for men was 25.2/1000 person-years (95% CI 18.5 to 35.0). Among men there was an independent relationship between incidence of disability and inability to write and read and poor perception of hearing adjusted for age. Among women, this relationship occurred with inability to write and read, poor perception of hearing, age and overweight or obesity adjusted by hypertension.

Conclusions Incidence rate of disability in IADL was greater in women. The determinants in both genders are similar, except age and overweight or obesity, important factors for women.

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