Decomposing the heterogeneity of depression at the person-, symptom-, and time-level: latent variable models versus multimode principal component analysis

Table 3 Rotated factor loadings of the 1- and 2-factor model

QIDS item number	Item label	1-factor model	2-factor model
QIDS item number	Item label		‘Mood/Cognitive’	‘Vegetative’
1–3	Hyposomnia	0.35	0.37	−0.23
4	Hypersomnia	0.14	0.00	0.85
5	Feeling sad	0.89	0.88	0.00
6/7	Changed appetite	0.40	0.36	0.25
8/9	Changed weight	0.12	0.06	0.36
10	Concentration	0.85	0.88	−0.13
11	View of myself	0.69	0.67	0.06
12	Thoughts of death/suicide	0.66	0.61	0.32
13	General interest	0.78	0.79	−0.07
14	Energy level	0.69	0.69	0.01
15	Psychomotor retardation	0.56	0.56	0.02
16	Psychomotor agitation	0.39	0.41	−0.08

QIDS quick inventory of depressive symptomatology
Loadings after oblique Geomin rotation
Factor loadings were boldfaced to indicate to which factor the corresponding item belongs to

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