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Table 2 Association of mean BMI (‘non-obese’ * and total) and prevalence of obesity in the adult population in the adult population (20–59 years) living in 26 state capitals by sex and age group, Brazil, 2002-2003

From: Correlation between mean body mass index in the population and prevalence of obesity in Brazilian capitals: empirical evidence for a population-based approach of obesity

BMI Age group (Years)   Male   Female
  rŦ p-value b1×100ǂ CI 95% rŦ p-value b1×100ǂ CI 95%
Total mean 20-39 0.4 0.040 2.3 0.1 - 4.4 0.9 <0.001 3.4 2.5 - 4.3
“Non-obese” mean * −0.1 0.604 - 0.7 - 3.2 - 1.9 0.2 0.439 0.9 - 1.4 - 3.1
Total mean 40-59 0.8 <0.001 5.7 3.7 - 7.8 0.9 <0.001 5.5 4.3 - 6.6
“Non-obese” mean * −0.2 0.445 - 2.0 - 7.1 - 3.2 0.3 0.222 2.5 - 1.6 - 6.7
Total mean 20-59 0.6 0.001 4.0 1.7 - 6.3 0.9 <0.001 3.4 2.6 - 4.3
“Non-obese” mean * 0.0 0.827 0.4 - 3.1 – 3.9 0.6 0.002 3.3 1.4 - 5.3
  1. *Average Body Mass Index of the population after exclusion of obese individuals (BMI ≥ 30 kg/m2).
  2. Ŧr. Pearson correlation coefficient.
  3. ǂb1 coefficient values indicate the average variation in the prevalence of obesity associated with a one unit reduction of the population mean BMI.
  4. 95% confidence interval.