Figure 1.

The percentages switching into another BMI groups (by age group) for men and women after an average 3.6-year follow-up. □ proportion switching from the underweight and normal weight group at baseline to the overweight and obesity group after an average 3.6-year follow-up. ■ proportion switching from the overweight and obesity group at baseline to the underweight and normal weight group after an average 3.6-year follow-up.

Hou et al. BMC Public Health 2008 8:389   doi:10.1186/1471-2458-8-389
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