Table 3.
Mean BMI by BMI trajectory group and age in girls.
| Trajectory group | Group 1 | Group 2 | Group 3 | Group 4 | ||||
|---|---|---|---|---|---|---|---|---|
| (persistently slightly underweight) | (persistently normal weight) | (persistently overweight) | (persistently obese) | |||||
| n = 248 (31.04%) | n = 321 (40.18%) | n = 176 (22.03%) | n = 54 (6.76%) | |||||
| Age (years) | Mean | (95% CI) | Mean | (95% CI) | Mean | (95% CI) | Mean | (95% CI) |
| 7.0 | 14.41 | (14.26–14.57) | 16.01 | (15.83–16.13) | 18.01 | (17.94–18.28) | 21.68 | (21.36–22.08) |
| 8.0 | 14.57 | (14.41–14.63) | 16.46 | (16.34–16.58) | 18.99 | (18.85–19.14) | 22.99 | (22.73–23.25) |
| 9.0 | 14.75 | (14.64–14.88) | 16.95 | (16.86–17.13) | 19.93 | (19.75–20.01) | 24.46 | (24.24–24.71) |
| 10.0 | 15.13 | (15.00–15.24) | 17.64 | (17.46–17.75) | 20.95 | (20.63–20.90) | 25.76 | (25.68–26.16) |
| 11.0 | 15.54 | (15.49–15.74) | 18.23 | (18.13–18.42) | 21.70 | (21.49–21.81) | 27.18 | (26.86–27.38) |
| 12.0 | 16.26 | (16.07–16.41) | 19.03 | (18.82–19.18) | 22.37 | (22.34–22.73) | 28.00 | (27.48–28.21) |