Table A1.

Assessment of unidimensionality and convergence of the parcels used to measure the latent variables in structural equation modeling.

Domain	Parcel	Items	Parcel Mean	Parcel SD	PCA Eigenvalues	Items in the Parcel	Cronbach’s Alpha	Parcel-Domain Correlation *
BDI	1	1, 4, 7, 10, 13, 16, 19	0.52	0.46	2.90; 0.86; 0.80; 0.75; 0.61; 0.59; 0.51	7	0.75	0.80
	2	2, 5, 8, 11, 14, 17, 20	0.49	0.46	3.08; 0.86; 0.75; 0.68; 0.63; 0.54; 0.45	7	0.79	0.82
	3	3, 6, 9, 12, 15, 18, 21	0.40	0.38	2.67; 1.03; 0.85; 0.77; 0.63; 0.56; 0.49	7	0.72	0.80
STAI	1	1R, 10R, 19R, 2, 5, 11, 15	2.03	0.49	2.85; 0.99; 0.92; 0.78; 0.71; 0.48; 0.23	7	0.73	0.79
	2	7R, 13R, 3, 8, 12, 17, 20	2.16	0.60	3.23; 0.91; 0.89; 0.62; 0.49; 0.44; 0.43	7	0.82	0.78
	3	6R, 16R, 4, 9, 14, 18	2.22	0.55	2.41; 1.03; 0.92; 0.60; 0.56; 0.48	6	0.69	0.83
PSQI	1	1, 3, 5, 7	1.01	0.70	1.71; 0.91; 0.81; 0.57	4	0.55	0.76
	2	2, 4, 6	1.06	0.68	1.39, 0.84, 0.76	3	0.40	0.76
ISI	1	1, 3, 5, 7	0.94	0.41	1.11; 0.82; 0.68; 0.38	4	0.68	0.47
	2	2, 4, 6	0.74	0.50	1.77; 0.77; 0.46	3	0.65	0.47

* Corrected for overlap. R = Reverse scored item. Bold type fonts indicate eigenvalues-greater-than-one in principal component analysis.