# Table 2 Mean body weight and body mass index at baseline and at maximum, and mean weight loss in men and women aged 50 years and over at baseline who survived for at least 3 years, by maximum body mass index and percentage of maximum weight lost: NHANES III, 1988–1994

Maximum BMI % Of maximum weight lost
<5% 5–<15% 15%
Mean(s.e.) Mean(s.e.) Mean(s.e.)
Healthy weight (N=992, deaths=264)
Baseline weight (kg) 61.0 (0.4) 57.5 (0.5)a 49.5 (0.7)a
Maximum weight kg) 62.1 (0.5) 63.2 (0.5) 61.7 (0.7)
Weight loss (kg) 1.1 (0.1) 5.7 (0.1)a 12.2 (0.3)a
Baseline BMI 22.8 (0.1) 21.0 (0.1)a 18.4 (0.2)a
Maximum BMI 23.1 (0.1) 23.1 (0.1) 22.9 (0.2)
Overweight (N=2362, deaths=648)
Baseline weight (kg) 75.2 (0.3) 71.5 (0.6)a 62.0 (0.8)a
Maximum weight (kg) 76.6 (0.3) 78.6 (0.6)a 77.8 (0.8)a
Weight loss (kg) 1.4 (0.1) 7.0 (0.1)a 15.9 (0.2)a
Baseline BMI 27.0 (0.1) 25.1 (0.1)a 22.1 (0.1)a
Maximum BMI 27.5 (0.1) 27.5 (0.1) 27.7 (0.1)b
Obese (N=2763, deaths=690)
Baseline weight (kg) 93.5 (0.5) 88.2 (0.5)a 76.4 (0.9)a
Maximum weight (kg) 94.9 (0.5) 97.4 (0.6)a 99.9 (1.3)a
Weight loss (kg) 1.4 (0.1) 9.2 (0.2)a 23.5 (0.7)a
Baseline BMI 34.1 (0.2) 31.1 (0.2)a 27.8 (0.3)a
Maximum BMI 34.5 (0.2) 34.3 (0.2) 36.4 (0.4)a
1. Abbreviations: BMI (expressed as weight (in kg)/height (in m2)), body mass index; NHANES III, Third National Health and Nutrition Examination Survey.
2. aP<0.01, comparison with respondents with weight loss <5%.
3. bP<0.05, comparison with respondents with weight loss <5%.
4. Weight loss is self-reported maximum weight minus measured weight at baseline as a percentage of maximum weight. Healthy weight is maximum BMI of 18.5–24.9. Overweight is maximum BMI of 25.0–29.9. Obese is maximum BMI of 30.0 or higher.