Construct validity
According to the principle of the varimax rotation, EFA was used to
assess the validity of the Chinese version of the PaArticular Scales.
The original English version of the PaArticular Scales has good
criterion validity and internal consistency
reliability.12 EFA is used to find the essential
structure of multivariate observations. The factors are first selected
based on a screening index of the eigenvalue >
1.0.29 Based on a screen plot, clinical experience and
original factor structure of the Scales, the factors are selected
again.30-33 Finally, the items are selected as long as
the minimum variance in each factor is 5%.