Table 2.

The association between MASEI and modified Steinbroker score - negative binomial regression

Variable*	Univariate regression			Multiple regression**
	estimate (SE)	exp(Estimate) (95% CI)	P value	estimate (SE)	exp(Estimate) (95% CI)	P value
MASEI – total	0.48 (0.11)	1.61 (1.30, 1.99)	<0.001	0.35 (0.10)	1.42 (1.15, 1.73)	<0.001
MASEI – bone score	0.86 (0.19)	2.36 (1.63, 3.38)	<0.001	0.64 (0.18)	1.89 (1.33, 2.69)	<0.001
MASEI – soft tissue score	0.63 (0.20)	1.88 (1.26, 2.77)	0.002	0.37 (0.18)	1.44 (1.03, 2.05)	0.03

MASEI MAdrid Sonography Enthesitis Index

^*10 units increase in MASEI

^**Each model was adjusted for age, sex, PsA duration, BMI, smoking, current use of DMARDs and biologics