Observatório de Saúde Urbana de Belo Horizonte, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil.
Cad Saude Publica. 2011;27 Suppl 3:S418-26. doi: 10.1590/s0102-311x2011001500012.
The aim of this study was to evaluate the effect of birth cohort on nutritional status among older elderly (71-81 years old) from the Bambuí Cohort Study of Aging, conducted in Brazil in 1997 and 2008. We compared the two birth cohorts--1916-1926 (older cohort) and 1927-1937 (recent cohort)--considering body mass index (BMI = weight/height²), waist circumference (WC) and prevalence of overweight (BMI ³ 27 kg/m²). BMI (β = 0.09, 95%CI: 0.04, 0.15) and prevalence of overweight (PR = 1.02; 95%CI: 1.01; 1.03) were higher in the recent cohort than the earlier cohort, regardless of sex and schooling. No difference was observed in WC. Stratified by sex, similar overall trends were observed for men, and WC was higher in the recent cohort. Among women there was no difference in BMI and overweight, but WC was lower in the recent cohort. The cohort effect was greater among older men and, in the near future, may result in greater prevalence of overweight in this group.
本研究旨在评估出生队列对巴西班比乌老龄化队列研究中较年长老年人（71-81 岁）营养状况的影响。我们比较了 1916-1926 年（较年长队列）和 1927-1937 年（较近队列）两个出生队列，考虑了体重指数（BMI=体重/身高²）、腰围（WC）和超重患病率（BMI³27kg/m²）。最近队列的 BMI（β=0.09，95%CI：0.04，0.15）和超重患病率（PR=1.02；95%CI：1.01；1.03）均高于较早队列，无论性别和受教育程度如何。WC 无差异。按性别分层，男性总体趋势相似，最近队列的 WC 更高。在女性中，BMI 和超重无差异，但最近队列的 WC 较低。在较年长的男性中，队列效应更大，在不久的将来，这一群体的超重患病率可能会更高。
