Table 5.

Confirmatory factor analysis adjustment parameters

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

CFI comparative fit index, RMSEA root mean square error of approximation, TLI tucker Lewis index