Table 6.

Fit indices for the final the structural equation model that describe the indirect effect of prenatal arsenic exposure on birth gestational age that is mediated through variation of DNAm of CpGs in miR124-3 and MCC in the validation phase (n = 569) .

Index	Criterion for Good Fit	Model Fit
χ2 P value	>0.05	<0.001
Robust root Mean Square Error of Approximation (RMSEA)	<0.05	0.038
Robust Comparative Fit Index (CFI)	>0.95	0.893
Robust Tucker-Lewisnon-normed Fit Index	>0.90	0.884
Standardized Root Mean Squared Residual	>0.05	0.049