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Table 4 Sex-and-age-stratified prevalence (mean percentage and 95% confidence interval) of underweight, overweight and obesity determined by body mass index and sex-and-age-specific percentage body fat mass criteria

From: Body mass index and measures of body fat for defining obesity and underweight: a cross-sectional, population-based study

   Age (yr) 20-29 30-39 40-49 50-59 60-69 70-79 80+
Men   n 181 195 206 222 211 238 193
  BMI Underweight 1.1 (0.1, 3.9) 1.0 (0.1, 3.7) 0.0 (0.0, 1.4) 0.0 (0.0, 1.3) 0.9 (0.1, 3.4) 0.8 (0.1, 3.0) 1.6 (0.3, 4.5)
   Overweight 29.3 (22.8, 36.5) 42.6 (35.5, 49.8) 49.5 (42.5, 56.4) 55.4 (48.6, 62.1) 48.8 (41.9, 55.8) 50.8 (44.3, 57.4) 50.3 (43.0, 57.5)
   Obese 8.3 (4.7, 13.3) 17.4 (12.4, 23.5) 20.9 (15.5, 27.1) 25.7 (20.1, 31.9) 29.9 (23.8, 36.5) 23.5 (18.3, 29.4) 13.5 (9.0, 19.1)
  %BF Underweight 4.4 (1.9, 8.5) 6.2 (3.2, 10.5) 1.5 (0.3, 4.2) 1.8 (0.5, 4.5) 2.4 (0.8, 5.4) 1.7 (0.5, 4.2) 2.1 (0.6, 5.2)
   Overweight 22.7 (16.8, 29.4) 34.9 (28.2, 42.0) 51.5 (44.4, 58.5) 49.5 (42.8, 56.3) 42.7 (35.9, 49.6) 44.1 (37.7, 50.7) 42.0 (34.9, 49.3)
   Obese 24.3 (18.3, 31.2) 25.1 (19.2, 31.8) 18.9 (13.8, 25.0) 25.7 (20.1, 31.9) 28.9 (22.9, 35.5) 29.0 (23.3, 35.2) 28.0 (21.8, 34.9)
Women   n 191 138 175 183 154 132 72
  BMI Underweight 2.1 (0.6, 5.3) 0.7 (0.0, 4.0) 1.1 (0.1, 4.1) 0.5 (0.0, 3.0) 1.3 (0.2, 4.6) 1.5 (0.2, 5.4) 4.2 (0.9, 11.7)
   Overweight 22.0 (16.3, 28.5) 24.6 (17.7, 32.7) 34.3 (27.3, 41.8) 31.7 (25.0, 39.0) 33.8 (26.4, 41.8) 40.2 (31.7, 49.0) 37.5 (26.4, 49.7)
   Obese 22.0 (16.3, 28.5) 21.7 (15.2, 29.6) 28.6 (22.0, 35.9) 38.3 (31.2, 45.7) 35.1 (27.6, 43.2) 30.3 (22.6, 38.9) 20.8 (12.2, 32.0)
  %BF Underweight 6.3 (3.3, 10.7) 5.8 (2.5, 11.1) 2.9 (0.9, 6.5) 1.1 (0.1, 3.9) 1.3 (0.2, 4.6) 3.0 (0.8, 7.6) 6.9 (2.3, 15.5)
   Overweight 23.6 (17.7, 30.2) 25.4 (18.3, 33.5) 34.9 (27.8, 41.4) 35.0 (28.1, 42.4) 34.4 (27.0, 42.5) 53.0 (44.2, 61.8) 36.1 (25.1, 48.3)
   Obese 25.7 (19.6, 32.5) 25.4 (18.3, 33.5) 29.1 (22.5, 36.5) 38.8 (31.7, 46.3) 33.1 (25.8, 41.1) 28.0 (20.6, 36.5) 23.6 (14.4, 35.1)
  1. BMI body mass index (kg/m2); %BF percentage body fat mass.