Table 3.
Infant Growth Characteristics (N=1,334 mother-child pairs)
| All Children | Boys (N=701) | Girls (N=633) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Min | Max | Mean | SD | Mean | SD | Pc | |
| Slope (β1)a [kg/months] | 0.33 | 1.60 | 0.09 | 1.07 | 0.35 | 1.58 | 0.31 | 1.62 | <0.01 |
| Spurt Duration (Δt1)a [months] | 13.3 | 1.6 | 4.1 | 48.4 | 12.6 | 1.6 | 14.1 | 1.6 | <0.01 |
| PGV [kg/months] | 0.68 | 0.22 | 0.27 | 1.50 | 0.74 | 0.24 | 0.62 | 0.20 | <0.01 |
| Age of PGV (δ1) [months] | 3.4 | 1.7 | 0.1 | 8.8 | 3.3 | 1.5 | 3.7 | 1.8 | <0.01 |
| Weight Plateau (α1) [kg] | 8.2 | 2.4 | 1.7 | 15.9 | 8.4 | 2.3 | 8.0 | 2.5 | <0.01 |
| Curve 2 Saturation (S2) [%] | 6.3 | 3.5 | 0.0 | 15.0 | 6.4 | 3.5 | 6.2 | 3.4 | 0.43 |
| SSEa | 0.7 | 4.1 | 0.0 | 95.1 | 0.8 | 3.9 | 0.6 | 4.3 | <0.01 |
Abbreviations: p, p-value; PGV, peak growth velocity; SD, standard deviation; SSE, sum of squares error
a
Geometric mean and standard deviation reported
b
PGV was approximated using the first term in Equation 8
c
p-value based on t-test for differences between sexes