Figure 1
The percentages switching into another BMI groups (by age group) for men and women after an average 3.6-year follow-up. â–¡ 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. â– 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.