Table 2.
Sample distribution and population estimates of BMI in the three waves
| Variable | Wave 1 | Wave 2 | Wave 3 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sample | Pop | Sample | Pop | Sample | Pop | |||||||||
| Mean/Perc | Mean/Perc | Mean/Perc | Mean/Perc | Mean/Perc | Mean/Perc | |||||||||
| N | N | N | ||||||||||||
| BMI [kg/m2] | 8177 | 27.11 | 26.75 | 8184 | 27.70 | 27.36 | 8728 | 27.79 | 27.53 | |||||
| (0.09) | (0.17) | (0.09) | (0.17) | (0.09) | (0.15) | |||||||||
| BMI category | ||||||||||||||
| Underweight | 440 | 5.38 % | 4.75 % | 366 | 4.47 % | 4.27 % | 226 | 2.59 % | 2.29 % | |||||
| (0.44 %) | (0.40 %) | (0.31 %) | ||||||||||||
| Normal weight | 3552 | 43.44 % | 43.04 % | 3073 | 37.55 % | 39.11 % | 3319 | 38.03 % | 38.87 % | |||||
| (1.38 %) | (1.29 %) | (1.21 %) | ||||||||||||
| Overweight | 1887 | 23.08 % | 24.84 % | 2066 | 25.24 % | 25.84 % | 2403 | 27.53 % | 27.86 % | |||||
| (1.01 %) | (0.89 %) | (1.00 %) | ||||||||||||
| Obese | 2298 | 28.10 % | 27.37 % | 2679 | 32.73 % | 30.77 % | 2780 | 31.85 % | 30.98 % | |||||
| (0.91 %) | (1.06 %) | (0.95 %) | ||||||||||||
N= number of non-missing values
Values in brackets are standard deviations (sample) and standard errors (population)