Test for invariance across gender and age.

Note: df: degrees of freedom; CMIN/DF: minimum discrepancy divided by its degrees of freedom; CFI: comparative fit index; RMSEA: root mean square error of approximation.

注：df：自由度（degrees of freedom）；CMIN/DF：最小偏差除以其自由度（minimum discrepancy divided by its degrees of freedom）；CFI：比较拟合指数（comparative fit index）；RMSEA：近似均方根误差（root mean square error of approximation）。