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Demographic and Anthropometric Characteristics
| Characteristic | Group 1 (n = 106) | Group 2 (n = 89) | Group 3 (n = 61) | Group 4 (n = 25) | P Value |
| Age, mo | 1.0 ± 0.3 | 3.6 ± 0.5 | 6.6 ± 0.6 | 13.2 ± 1.9 | < .001 |
| Weight, kg | 4.1 ± 0.6 | 6.3 ± 0.8 | 7.8 ± 0.9 | 9.3 ± 1.1 | < .001 |
| Height, cm | 53.0 ± 3.2 | 60.5 ± 2.9 | 66.6 ± 3.5 | 74.4 ± 4.9 | < .001 |
Data are presented as mean ± SD. P values reflect analysis of variance comparisons across all groups.
