Table 5.

Principal component analysis of the PPOS items (excluding items #9, #13 and #17)

	C1	C2	C3	h2
#18	0.77	−0.10	−0.06	0.37
#5	0.68	0.15	0.21	0.50
#8	0.58	−0.00	0.30	0.45
#10	0.53	0.18	0.23	0.44
#12	0.47	0.19	0.23	0.52
#16	0.09	0.72	−0.15	0.53
#6	0.05	0.70	0.20	0.52
#7	−0.01	0.55	0.47	0.43
#15	0.12	0.53	0.15	0.36
#14	0.34	0.41	−0.32	0.31
#11	−0.02	0.39	0.38	0.32
#2	0.24	0.07	0.66	0.55
#3	0.21	−0.05	0.64	0.61
#1	0.28	0.22	0.49	0.39
#4	0.33	0.33	0.47	0.30
Explained variance	15.5%	14.5%	13.9%
Cronbach's α	0.68	0.60 *	0.63

Kaiser‐Meyer‐Olkin 0.82; Bartlett's sphericity test: χ² = 799.2, P < .001.

Loadings above 0.30 in bold.

^*Items #16, #6, #7, #15.