Table 3.

Exploratory Factor Analysis^a of the SF-36 and WHOQoL-BREF

Subscales	Factor Loading b		H2c
	Factor I	Factor II
SF-36
PF	0.683	0.210	0.510
RP	0.803	0.057	0.649
BP	0.737	0.264	0.613
GH	0.635	0.435	0.593
VT	0.593	0.563	0.669
SF	0.523	0.383	0.420
RE	0.713	0.168	0.536
MH	0.593	0.497	0.599
WHOQoL-BREF
PH	0.583	0.637	0.746
PS	0.320	0.808	0.756
SR	0.139	0.736	0.561
EH	0.092	0.829	0.695

Notes: ^aUsing iterated principal factor analysis with eigenvalue >1.0. ^bAfter oblique rotation. ^cCommunality: proportion of a variable’s variance explained by a factor structure.

Abbreviations: SF-36, Short Form 36 Health Survey; WHOQoL-BREF, World Health Organization Quality of Life Scale Brief Version; PF, physical functioning; RP, role physical; BP, bodily pain; GH, general health; VT, vitality; SF, social functioning; RE, role emotional; MH, mental health. PH, physical health; PS, psychological well-being; SR, social relationships; EH, environment health.