Table 4.
Multivariate Descriptive, Sample Size Adequacy, Quality and Effectiveness of Factor Score, and Reliability Measures of the Generalized Anxiety Disorder (GAD)-7 Scale Among Young Adults
| Measures | Values |
|---|---|
| Multivariate descriptive | |
| Mardia’s skewness | Χ2 (df = 84) = 143.021, p = 0.999 |
| Mardia’s kurtosis | Χ2 = −0.833, p = 0.202 |
| Effectiveness and quality of factor score estimates* | |
| Factor Determinacy Index (FDI) | 0.885 |
| Expected a posteriori marginalreliability | 0.783 |
| Sample size adequacy | |
| Bartlett’s test of Sphericity | Χ2 (df = 21) = 266.8, p < 0.001 |
| Determinant | 0.368 |
| KMO (95% confidence interval) | 0.819 (0.802–0.853) |
| Internal consistency | |
| Greatest Lower Bound to Reliability | 0.813 |
| McDonald’s Omega | 0.772 |
Notes: Kaiser-Meyer-Olkin Test of Sampling Adequacy (KMO); *for the 1-factor structure of the GAD-7 scale.