BMI Percentile and BMI z-Score Changes
| Outcome | Last Follow-up Time | Original Sample | multiple imputation | ||
|---|---|---|---|---|---|
| Change per 3 Months, Coefficient (SE) | P Value | Change per 3 Months, Coefficient (SE) | P Value | ||
| BMI percentile | Baseline | — | — | — | — |
| 3–6 Months | −0.64 (0.50) | .2023 | −0.33 (0.29) | .2722 | |
| 6–9 Months | −0.92 (0.37) | .0137 | −0.30 (0.37) | .4202 | |
| 9–15 Months | −0.49 (0.24) | .0391 | −0.45 (0.17) | .0094 | |
| BMI z-score | Baseline | — | — | — | — |
| 3–6 Months | −0.006 (0.030) | .8546 | −0.007 (0.040) | .8652 | |
| 6–9 Months | −0.024 (0.021) | .2413 | −0.036 (0.052) | .5097 | |
| 9–15 Months | −0.030 (0.013) | .0217 | −0.048 (0.023) | .0329 | |
BMI, body mass index; SE, standard error.