TABLE 2.
Within-child variability for each metric according to initial BMI
| Initial BMI | ||||||
|---|---|---|---|---|---|---|
| Severe Obesity | ||||||
| Initial BMI | <85th Percentile (n = 180 433) |
85th to <95th Percentiles (n = 40 919) |
100 to <120% of 95th (n = 29 663) |
120 to <140% of 95th (n = 10 207) |
≥140% of 95th (n = 4896) |
Ratio of highest to lowest within-child SDs |
| BMI | 0.58a | 0.85 | 1.05 | 1.24 | 1.46 | 2.5 |
| BMIz | 0.27 | 0.20 | 0.15 | 0.08 | 0.06 | 4.5 |
| Extended BMIz | 0.27 | 0.19 | 0.14 | 0.16 | 0.21 | 1.9 |
| %50th | 4.23 | 5.71 | 6.91 | 7.06 | 8.07 | 1.9 |
| %95th | 2.43 | 3.35 | 4.04 | 4.39 | 5.07 | 2.1 |
| Log %50th | 3.05 | 3.60 | 3.85 | 3.56 | 3.36 | 1.3 |
a
Except for the final column, all values represent the mean within-child SD within the specified BMI category.