Table 4.

Item-scale correlation matrix for the eight SF-12v2 scales and summary measures*

	PF	RP	BP	GH	SF	RE	VT	MH	PCS	MCS
PF
PF1	0.93	0.59	0.53	0.48	0.37	0.35	0.35	0.26	0.80	0.13
PF2	0.94	0.59	0.54	0.50	0.37	0.36	0.39	0.29	0.81	0.16
RP
RP1	0.57	0.94	0.54	0.46	0.43	0.55	0.38	0.31	0.69	0.33
RP2	0.62	0.94	0.59	0.49	0.45	0.53	0.39	0.33	0.74	0.32
BP
BP1	0.57	0.60	1.00	0.56	0.48	0.46	0.46	0.42	0.75	0.36
GH
GH1	0.51	0.49	0.55	0.98	0.40	0.39	0.50	0.44	0.66	0.40
SF
SF1	0.40	0.46	0.48	0.41	1.00	0.48	0.37	0.46	0.39	0.63
RE
RE1	0.36	0.55	0.42	0.38	0.45	0.94	0.34	0.50	0.28.	0.71
RE2	0.35	0.53	0.44	0.38	0.46	0.94	0.35	0.49	0.27	0.71
VT
VT1	0.39	0.41	0.46	0.50	0.37	0.37	1.00	0.49	0.43	0.58
MH
MH1	0.24	0.28	0.37	0.41	0.37	0.39	0.51	0.83	0.16	0.71
MH2	0.25	0.30	0.34	0.35	0.43	0.50	0.33	0.85	0.11	0.74

* Figures are Spearman's correlation coefficient (rho). All correlations were significant at the 0.01 levels. Correlation values of 0.4 or above were considered satisfactory (correlations ≥ 0.81-1.0 as excellent, 0.61-0.80 very good, 0.41-0.60 good, 0.21-0.40 fair, and 0-0.20 poor) [25].