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

Table 4 3PCA symptom component scores

QIDS item number	Item	1: somatic/affective	2: cognitive/appetitive
1–3	Hyposomnia	0.36	−0.19
4	Hypersomnia	−0.15	0.21
5	Feeling sad	0.38	0.12
6/7	Changed appetite	−0.01	0.63
8/9	Changed weight	0.03	0.42
10	Concentration	0.39	0.00
11	View of myself	0.16	0.28
12	Thoughts of death/suicide	0.13	0.36
13	General interest	0.43	−0.07
14	Energy level	0.30	0.14
15	Psychomotor retardation	0.25	0.19
16	Psychomotor agitation	0.41	−0.25

3PCA three-mode principle component analysis, QIDS quick inventory of depressive symptomatology
Component scores were boldfaced to indicate to which component the corresponding item belongs to

ISSN: 1471-2288