Table 2.
Subject characteristics and child anthropometries in the test and validation sets
| Training set (n = 1,016) |
Validation set (n = 457) |
P-value* | |
|---|---|---|---|
| Sex, n (%) | 0.65 | ||
| Boys | 531 (52.3) | 233 (51.0) | |
| Girls | 485 (47.7) | 224 (49.0) | |
| Race/ethnicity, n (%) | 0.74 | ||
| Non-Hispanic White | 208 (20.5) | 88 (19.3) | |
| Hispanic | 462 (45.6) | 200 (43.9) | |
| Non-Hispanic Black | 258 (25.5) | 126 (27.6) | |
| Other | 88 (8.4) | 43 (9.2) | |
| Age, years, mean (SD) | 1.9 (1.7) | 1.9 (1.7) | 0.27 |
| Anthropometrics, mean (SD) | |||
| Weight (kg) | 11.5 (5.3) | 11.8 (5.0) | 0.37 |
| Recumbent length (cm† | 70.7 (11.9) | 71.9 (12.1) | 0.15 |
| Standing height (cm† | 100.7 (8.8) | 100.6 (8.6) | 0.96 |
| Ulna length (cm) | 12.7 (2.9) | 12.8 (2.9) | 0.48 |
| Forearm width (cm) | 5.3 (0.7) | 5.3 (0.6) | 0.99 |
| Forearm circumference (cm) | 15.0 (2.2) | 15.1 (2.0) | 0.42 |
*
Obtained by Student’s t tests for continuous variables and by χ2 tests for categorical variables.
†
Recumbent length and standing height were measured among infants and children aged 0–1.9 and 25.9 years, respectively.