Table 2.
Body mass index trajectories.
| Trajectory-group | Curve order | Curve parameters |
Group size, N (%) | Posterior probability | |||
|---|---|---|---|---|---|---|---|
| Intercept | Linear | Quadratic | Cubic | ||||
| 1 | 1 | 20.02 | 0.0065 | N/A | 68 (7.2) | 0.96 | |
| 2 | 1 | 22.10 | 0.0948 | N/A | 216 (23.0) | 0.96 | |
| 3 | 3 | 23.94 | 0.3509 | -0.0217 | 0.0006 | 260 (27.7) | 0.94 |
| 4 | 3 | 26.36 | 0.4534 | -0.0336 | 0.0010 | 205 (21.9) | 0.95 |
| 5 | 2 | 29.18 | 0.4178 | -0.0096 | N/A | 118 (12.6) | 0.97 |
| 6 | 2 | 33.25 | 0.4380 | -0.0122 | N/A | 59 (6.3) | 0.99 |
| 7 | 2 | 41.29 | 0.5606 | -0.0278 | N/A | 12 (1.3) | 1.00 |
N/A, not applicable. The model was created using 11 repeated measures of body mass index at follow-up years 1, 2, 3, 4, 5, 6, 8, 9, 10, 15 and 20. Group 1 and 2 are normal-weighted and used together as a reference. The remaining five groups are labelled as slightly overweight (group 3), lower overweight-to-obese (group 4), upper overweight-to-obese (group 5), lower obese (group 6), and upper obese (group 7).