Table 3

Multivariate linear regressions analyses of factors associated with Euro-QoL and SF-36

	Euro-QoL			SF-36 (physical health score)			SF-36 (mental health score)
	Standard coefficient	Regression coefficient (95% CI)	p Value	Standard coefficient	Regression coefficient (95% CI)	p Value	Standard coefficient	Regression coefficient (95% CI)	p Value
Smoker	0.13	1.38 (0.69 to 2.07)	<0.001	−0.14	−4.89 (−7.24 to −2.54)	<0.001	−0.14	−5.90 (−8.99 to −2.81)	<0.001
Caucasian race	NS	NS	–	0.11	6.09 (2.21 to 9.98)	0.002	0.12	8.17 (3.01 to 13.31)	0.002
Male sex	−0.18	−1.73 (−2.40 to −1.06)	<0.001	0.13	4.37 (2.08 to 6.66)	<0.001	0.11	4.38 (1.37 to 7.39)	0.004
HLA-B27 positivity	NS	NS	–	NS	NS	–	NS	NS	–
Drinker	NS	NS	–	NS	NS	–	NS	NS	–
ASDAS–CRP	0.52	2.47 (2.15 to 2.80)	<0.001	−0.52	−8.32 (−9.41 to −7.21)	<0.001	−0.46	−9.08 (−10.52 to −7.63)	<0.001
MRI sacroiliac joint inflammation	−0.12	−1.26 (−1.96 to −0.56)	<0.001	0.14	4.94 (2.56 to 7.32)	<0.001	0.13	5.33 (2.20 to 8.46)	0.001
BASMI	0.12	0.56 (0.26 to 0.86)	<0.001	−0.09	−1.42 (−2.45 to −0.39)	0.01	NS	NS	–

ASDAS–CRP, ankylosing spondylitis disease activity score, C-reactive protein based; BASMI, Bath ankylosing spondylitis metrology index; Euro-QoL, Euro-quality of life questionnaire; HLA, human leucocyte antigen; NI, not included in the multivariate model; NS, non-significant in multivariate analysis; SF-36, short form 36.