Table 3.

Goodness-of-fit statistics of the original and the modified Short Form 36 structures (n=206)

	Hypothesized structure		Modified structure
	First order	Second order	Second order
χ2 (df)	1559.75	101.41	25.41
df	559	19	15
χ2 (p-value)	<0.001	<0.001	0.070
χ2/df	2.79	5.34	1.69
RMSEA (90% CI)	0.10 (0.09, 0.11)	0.18 (0.15, 0.21)	0.06 (0.00, 0.10)
RMSEA (p-value)	<0.001	<0.001	0.320
NNFI	0.88	0.86	0.98
CFI	0.89	0.90	0.99
GFI	0.64	0.71	0.96
SMSR	0.15	0.09	0.04

df, degree of freedom; CI, confidence interval; RMSEA, root mean square approximation; NNFI, non-normed fit index; CFI, comparative fit index; GFI, goodness-of-fit index; SMSR, standardized root mean square residual.