Table 2.

Final model with nine items.

Item/content	DSM diagnostic criterion	Location	SE	FitResid	χ2	χ2 prob	F-stat	p
TDI1\feeling blue	VII	−0.465	0.041	0.50	12.892	0.1676	1.630	0.1024
TDI13\fatigability	VI	−0.063	0.037	0.246	8.952	0.4417	1.073	0.3804
TDI18\loss of interest	II	−0.056	0.036	−0.519	9.978	0.3522	1.148	0.3259
TDI8\concentration ability*	VIII	−0.044	0.041	1.756	5.904	0.7495	0.592	0.8041
TDI15\enjoyment*	I	−0.025	0.04	0.998	6.086	0.7313	0.653	0.7520
TDI11\loss of self-confidence	VII	−0.009	0.039	1.561	12.395	0.1919	1.588	0.1145
TDI2\concentration difficulty	VIII	0.000	0.039	−0.92	12.854	0.1693	1.644	0.0987
TDI14\lack of energy*	VI	0.089	0.04	0.722	8.826	0.4535	0.94	0.4895
TDI6\withdrawal	IX	0.572	0.06	−0.647	19.643	0.0202	2.534	0.0072

χ² prob with Bonferroni adj. = 0.0055; DSM, diagnostic and statistical manual of mental disorders.

^*Reverse scored items.