Table 2. Principal component analysis of functional principal components.
| qualitative feature of joint FPCs |
marginal FPC factor |
PC loadings | |||||
|---|---|---|---|---|---|---|---|
| PC1 | PC2 | PC3 | PC4 | PC5 | PC6 | ||
| General growth | HC-FPC1 | 0.502 | 0.155 | 0.457 | 0.690 | 0.044 | 0.191 |
| LN-FPC1 | 0.552 | 0.198 | -0.289 | -0.430 | 0.243 | 0.574 | |
| WT-FPC1 | 0.527 | 0.331 | -0.109 | -0.182 | -0.383 | -0.649 | |
| Growth acceleration | HC-FPC2 | -0.216 | 0.517 | 0.688 | -0.422 | 0.188 | -0.020 |
| LN-FPC2 | -0.185 | 0.546 | -0.432 | 0.324 | 0.570 | -0.227 | |
| WT-FPC2 | -0.291 | 0.512 | -0.190 | 0.154 | -0.657 | 0.402 | |
| partial FVE | 0.382 | 0.261 | 0.122 | 0.094 | 0.088 | 0.053 | |
| cumulative FVE | 0.382 | 0.643 | 0.765 | 0.859 | 0.947 | 1.000 | |
Principal component analysis for the variance-covariance matrix of the first two marginal functional principal component scores (FPCs) for head circumference (HC), body length (LN) and weight (WT).