Discriminant Validity for 15-item GIS-family planning.

Note: △Χ2 is the difference between theΧ2 of the defined model with CFA (in which the correlation coefficient between the two factors was defined as 1) and undefined model with CFA (in which the correlation coefficient between the two factors was undefined); △Χ2>2.71,
+p<0.1; △Χ2>3.84,
*p<0.05;△Χ2>6.64,
**p<0.01; △Χ2>10.83,
***p<0.001.

注意：Δχ²为采用验证性因子分析（Confirmatory Factor Analysis，CFA）时，设定两因子间相关系数为1的约束模型卡方值与未限定两因子间相关系数的无约束模型卡方值之差；当Δχ²>2.71时，+p<0.1；当Δχ²>3.84时，*p<0.05；当Δχ²>6.64时，**p<0.01；当Δχ²>10.83时，***p<0.001。