Table 3.

Fit indices for the initial and final confirmatory factor analysis models and the initial and final structural equation models. São Luís, Brazil, 2010–2013.

Indices model fit	Initial CFAa	Final CFAb	Initial SEM modelc	Final SEM modeld
X 2e	10.541	0.471	411.490	432.926
Degrees of freedom	2	1	164	318
p-value X 2	0.0051	0.4926	<0.001	<0.001
RMSEAf	0.061	<0.001	0.036	0.018
90% CIg	0.028–0.099	0.000–0.069	0.032–0.041	0.013–0.022
p-value	0.253	0.851	1.000	1.000
CFIh	0.995	1.000	0.928	0.960
TLIi	0.985	1.002	0.889	0.951
SRMRj	0.692	0.089	—	—
WRSMl	—	—	1.147	0.914

^aConfirmatory factor analysis (CFA) of the “Childhood Asthma Symptoms”. ^bCFA of the “Childhood Asthma Symptoms”. ^cInitial theoretical model proposed. ^dFinal model analyzed by SEM. ^eChi-square test. ^fRMSEA: root mean square error of approximation. ^gCI: confidence interval. ^hCFI: comparative fit index. ⁱTLI: Tucker Lewis index. ^jSRMR: standardized root mean square residual. ^lWRSM: weighted root mean square residual.