Table 4.
Annualized change in anthropometry (child level): Test dataseta
| Girls | Boys | |||
|---|---|---|---|---|
| CDC Population outlier approach | Proposed Longitudinal outlier approach | CDC Population outlier approach | Proposed Longitudinal outlier approach | |
| Height changeb | ||||
| Full sample | n=33,429 | n=33,391 | n=26,021 | n=25,996 |
| Mean (SD) | 0.78 (3.05) | 0.73 (6.60) | 1.76 (5.00) | 1.74 (7.95) |
| Median (10th, 90th percentile) | 0.42 (−0.34,2.58) | 0.40 (−0.42,2.64) | 1.82 (0.00,3.35) | 1.79 (0.00,3.43) |
| >85th percentile at baseline | n=5,802 | n=4,662 | n=5,518 | n=4,717 |
| Mean (SD) | 0.61 (2.93) | 1.24 (7.51) | 1.53 (2.92) | 2.34 (5.45) |
| Median (10th, 90th percentile) | 0.52 (−0.44,2.46) | 0.70 (−0.14,3.34) | 1.67 (0.00,3.25) | 2.36 (0.00,3.95) |
| Weight changeb | ||||
| Full sample | n=42,226 | n=42,164 | n=31,363 | n=31,338 |
| Mean (SD) | 7.98 (28.20) | 8.21 (32.00) | 10.87 (22.46) | 10.43 (42.57) |
| Median (10th, 90th percentile) | 6.81 (−4.30,21.56) | 6.78 (−5.57,23.33) | 10.59 (−0.63,23.66) | 10.56 (−2.12,24.72) |
| >85th percentile at baseline | n=17,068 | n=17,434 | n=13,620 | n=13,067 |
| Mean (SD) | 8.22 (37.87) | 12.39 (38.09) | 11.61 (26.18) | 14.08 (39.10) |
| Median (10th, 90th percentile) | 7.92 (−7.06,24.76) | 10.73 (−5.14,30.23) | 12.39 (−4.09,27.01) | 15.08 (−2.48,30.09) |
| BMI changeb | ||||
| Full sample | n=33,230 | n=33,267 | n=25,757 | n=25,871 |
| Mean (SD) | 0.87 (5.64) | 0.91 (8.74) | 0.66 (5.69) | 0.72 (7.94) |
| Median (10th, 90th percentile) | 0.73 (−1.12,3.02) | 0.74 (−1.43,3.37) | 0.67 (−1.02,2.53) | 0.67 (−1.28,2.88) |
| >85th percentile at baseline | n=15,153 | n=15,475 | n=12,115 | n=11,661 |
| Mean (SD) | 0.75 (7.37) | 1.53 (8.39) | 0.48 (7.89) | 1.07 (10.33) |
| Median (10th, 90th percentile) | 0.80 (−1.71,3.41) | 1.27 (−1.32,4.56) | 0.69 (−1.78,2.83) | 1.11 (−1.46,3.71) |
BMI, body mass index index; CDC, Centers for Disease Control; SD, standard deviation
a
Children 10–18 years of age in the ADVANCE Weight Cohort (n=73,776).
b
Annualized change calculated as (last measure – first measurement)/number of years, after omission of height and weight or BMI outliers, according to the population or longitudinal outlier approach.