From: Migraine screen questionnaire: further psychometric evidence from categorical data methods
Measures | Values |
---|---|
Multivariate descriptive | |
Mardia’s skewness | Χ2(df = 35) = 271.190, p = 1.00 |
Mardia’s kurtosis | Χ2 = 0.513, p = 0.3038 |
Quality and effectiveness of factor score estimatesa | |
Factor Determinacy Index (FDI) | 0.953 |
expected a posteriori marginal reliability | 0.909 |
Construct replicabilitya | |
H-Latent | 0.909 |
H-Observed | 0.727 |
Sample size adequacy | |
Bartlett’s test of Sphericity | Χ2(df = 10) = 430.3, p < 0.001 |
Determinant | 0.282 |
KMO (95% confidence interval) | 0.804 (0.770–0.845) |
Internal consistency | |
Greatest Lower Bound to Reliability | 0.932 |
McDonald’s Omega | 0.903 |