title: Prevalence of thyroid disorders among older people: results from the São Paulo Ageing & Health Study.
abstract: This study aimed to estimate prevalence of thyroid disorders in the São Paulo Ageing & Health Study, an epidemiological study addressing several health-adverse outcomes among elderly people living in a poor area of São Paulo, Brazil. All participants answered a questionnaire and had a blood sample collected to assess levels of thyrotropic hormone and free-thyroxine. Among 1,373 people (60.8% women), prevalence rates (95% confidence interval) for thyroid dysfunction (%) were: overt hyperthyroidism, 0.7% (0.2-1.1)[women: 0.8% (0.2-1.5); men: 0.4% (0.01-0.9)]; overt hypothyroidism, 5.7% (4.5-6.9) [women: 5.9% (4.3-7.5); men: 5.4% (3.5-7.3)]; subclinical hyperthyroidism, 2.4% (1.6-3.2) [women: 2.8% (1.6-3.9); men: 1.9% (0.7-3.0)]; and subclinical hypothyroidism, 6.5% (5.2-7.8) [women: 6.7% (5.0-8.4); men: 6.1% (4.1-8.2)]. There was no difference in prevalence rates according to gender, but almost 40% of women were diagnosed and under treatment compared to 9% of men. The burden of thyroid disorders in this sample is high and most participants were not aware of them.
authors.affiliation: Hospital Universitário, Universidade de São Paulo, São Paulo, Brasil.
authors.forename: Isabela M
authors.initials: IM
authors.lastname: Benseñor
authors.forename: Alessandra Carvalho
authors.initials: AC
authors.lastname: Goulart
authors.forename: Paulo A
authors.initials: PA
authors.lastname: Lotufo
authors.forename: Paulo Rossi
authors.initials: PR
authors.lastname: Menezes
authors.forename: Marcia
authors.initials: M
authors.lastname: Scazufca
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006980:Hyperthyroidism / Q000097:blood / Q000453:epidemiology*; D007037:Hypothyroidism / Q000097:blood / Q000453:epidemiology*; D008297:Male; D015995:Prevalence; D013960:Thyroid Function Tests