Dimensionality and scale properties of the Edinburgh Depression Scale (EDS) in patients with type 2 diabetes mellitus: the DiaDDzoB study

Table 4 Model-fit indices polychoric correlations confirmatory factor analysis

Model	CFI¹	TLI¹	RSMSA²
Unidimensional (all 10 items)	.970	.981	.068
8-item scale (items 1&2 removed)	.985	.989	.058
Two-dimensional³	.974	.984	.063

Notes.
¹CFI/TLI > .9 indicates reasonably good fit (Kline, 2005; pp. 137-141)
²RSMEA between 0.05 and 0.08 suggests reasonable fit (Kline, 2005; pp. 137-141)
³Two dimensional model; items 1 and 2 loaded on one factor, and items 3 to 10 on the other factor; factors were correlated.

ISSN: 1471-244X