Table 5 Confirmatory factor analysis adjustment parameters
From: Validation of the Portuguese version of Amsterdam Preoperative Anxiety and Information Scale (APAIS)
Models and items | 1-factor model 1 + 2 + 3 + 4 + 5 + 6 | 2-factor model Anxiety 1 + 2 + 4 + 5 Desire for information 3 + 6 | 3-factor model Anxiety about anesthesia 1 + 2 Anxiety about surgery 4 + 5 Desire for information 3 + 6 |
|---|---|---|---|
Chi-square p | < 0.001 | < 0.001 | 0.066 |
TLI | 0.796 | 0.776 | 0.926 |
CFI | 0.878 | 0.880 | 0.970 |
RMSEA (90% CI) | 0.156 (0.110–0.206) | 0.164 (0.115–0.217) | 0.095 (0.017–0.161) |
Model comparison | 1-factor versus 2-factor model: p = 0.1817 1-factor versus 3-factor model: p < 0.001 2-factor versus 3-factor model: p < 0.001 | ||