Related but different: distinguishing postpartum depression and fatigue among women seeking help for unsettled infant behaviours

Table 3 Fit Indices for models (N = 167)

Model	χ ²	df	p	RMSEA [90% CI]	TLI	CFI	WRMR
Congeneric DASS21-D	25.77	14	.0277	0.071 [0.023, 0.113]	0.992	0.995	0.583
Congeneric FSS-5R	14.38	5	.0134	0.106 [0.044, 0.172]	0.984	0.992	0.441
One-factor model	475.56	54	<.0001	0.216 [0.199, 0.234]	0.812	0.847	2.410
Two-factor model	136.28	53	<.0001	0.097 [0.077, 0.117]	0.962	0.970	0.987
Two-factor model on SE	147.72	63	<.0001	0.092 [0.073, 0.111]	0.956	0.964	0.965

Note. χ² Chi-Square Test of Model Fit; CFI Comparative Fit Index, DASS21-D Depression Anxiety Stress Scale Depression subscale, FSS-5R Fatigue Severity Scale-Revised 5-item version, RMSEA Root Mean Square Error of Approximation, SE Sleep Efficiency, TLI Tucker-Lewis Index, WRMR Weighted Root Mean Square Residual

ISSN: 1471-244X