Table 2.

Rater agreement, scale reliability coefficients, and correlation coefficients between the identified 10-item QWB-SA mental health scale and other measures

Samples	Concurrent measures of validity								Discriminant Measures
	Cronbach’s alpha	Mean (S.D.)	SF-36 MH componentb	SF-36 MH Scaleb	EQ-5D anxiety/ depression Item	HUI2 emotion scaleb	POMS depression- dejection scalea	POMS TMDa	SF-36 physical componentb	SF-36 physical functioning scaleb
Sample 1	0.827	1.06 (1.74)	−0.663**	−0.698**	0.608**	−0.631**	–	–	−0.320**	−0.389**
Sample 2	0.842	1.31 (1.83)	−0.690**	−0.723**	0.609**	−0.591**	0.767**	0.768**	−0.251**	−0.354**

Samples	Concurrent measures of validity							Discriminant measures
	Cronbach’s alpha	Mean (S.D.)	IMR management scalec	Recovery Markers Questd	MHSIP functioning	MHSIP outcomes	MHSIP social	IMR recovery scalec	IMR substance scalec	MHSIP access	MHSIP quality of services	MHSIP participation
Sample 3	0.908	2.52 (2.28)	−0.248**	−0.368**	−0.397**	−0.398**	−0.373**	−0.055	−0.051	−0.152**	−0.106*	−0.118**

Sample 1 n = 3,844, Sample 2 n = 535, Sample 3 n = 915

Overall agreement between raters ICC = 0.78

Absolute agreement between raters = 60%

^*p < 0.01;

^**p < 0.001

^aScale score was calculated using normative-based weighted scoring

^bn = 164

^cn = 519

^dn = 405