Table 1.
Description of Sample Used to Create Reference Percentiles
| Non-Black Males | Black Males | Non-Black Females | Black Females | |
|---|---|---|---|---|
| Number of participants | 745 | 246 | 789 | 233 |
| Number of observations | 3813 | 1097 | 3997 | 1121 |
| Puberty Stage | # Obs | n | # Obs | n | # Obs | n | # Obs | n |
|---|---|---|---|---|---|---|---|---|
| Tanner 1 | 1051 | 363 | 277 | 111 | 931 | 364 | 191 | 82 |
| Tanner 2–4 | 944 | 399 | 299 | 125 | 1050 | 467 | 283 | 130 |
| Tanner 5 | 1659 | 444 | 456 | 132 | 1547 | 385 | 559 | 142 |
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
|---|---|---|---|---|---|---|---|---|
| Age, y | 13.72 | 4.26 | 13.85 | 4.32 | 13.40 | 4.17 | 13.35 | 3.85 |
| Height Z-score | 0.12 | 0.84 | 0.31 | 0.85 | 0.13 | 0.86 | 0.21 | 0.88 |
| Weight Z-score | 0.29 | 0.82 | 0.49 | 0.85 | 0.30 | 0.83 | 0.59 | 0.77 |
| BMI Z-score | 0.24 | 0.90 | 0.38 | 0.89 | 0.29 | 0.83 | 0.58 | 0.82 |
Abbreviations: BMI, body mass index; n, number of participants with observations during the corresponding stage of maturation; # Obs, number of observations.