From: Migraine screen questionnaire: further psychometric evidence from categorical data methods

Measures | Values |
---|---|

Multivariate descriptive | |

Mardia’s skewness | Χ^{2}(df = 35) = 271.190, p = 1.00 |

Mardia’s kurtosis | Χ^{2} = 0.513, p = 0.3038 |

Quality and effectiveness of factor score estimates^{a} | |

Factor Determinacy Index (FDI) | 0.953 |

expected a posteriori marginal reliability | 0.909 |

Construct replicability^{a} | |

H-Latent | 0.909 |

H-Observed | 0.727 |

Sample size adequacy | |

Bartlett’s test of Sphericity | Χ^{2}(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 |