Physical and emotional health outcomes after 12 months of public-sector antiretroviral treatment in the Free State Province of South Africa: a longitudinal study using structural equation modelling

Table 2 Standardized LISREL coefficients and summary of the structural model (n = 268)

Path	Path Coefficient	t Value
ARV Treatment Duration → Adverse Effects	-0.38***	-6.031
Adverse Effects → Physical QoL	-0.27**	-2.729
Adverse Effects → Emotional QoL	-0.15*	-1.966
ARV Treatment Duration → Physical QoL	-0.03^a	-0.329
ARV Treatment Duration → Emotional QoL	-0.08^a	-0.761
Physical QoL → Emotional QoL	0.33**	2.971
Test for Fit	Structural Model	Criteria for Good Fit
RMSEA¹	0.0312	< 0.05
Normed Fit Index (NFI)	0.985	> 0.90
Non-Normed Fit Index (NNFI)	0.993	> 0.90
Comparative Fit Index (CFI)	0.996	> 0.90
Parsimony Goodness of Fit Index (PGFI) ²	0.433
Parsimony Normed Fit Index (PNFI) ²	0.630

^a Not statistically significant. * P < 0.05, ** P < 0.01, *** P < 0.001
¹RMSEA, root mean square error of approximation. RMSEA is a measure of the discrepancy per degree of freedom for the model and reflects badness-of-fit per degree of freedom. A value for RMSEA of 0.05 or less indicates a close fit of the model in relation to the degrees of freedom.
²These fit indices are relative fit indices that are adjustments of the goodness of fit index (GFI) and the normed fit index (NFI). The adjustments are made to penalize the models that are less parsimonious, so that simpler theoretical models are favoured over more complex ones. Although no threshold levels have been recommended for these indices, higher values are preferable.

ISSN: 1471-2458