Table 3. Association of BMD at different locations with anti-CarPA stratified as negative, low-positive and high-positive.

Location	BMD measure	anti-CarPA	Coefficient a	SE	P
LS	mg/cm2	negative b	ref.
		low-positive	0.01	0.02	0.7
		high-positive	-0.04	0.02	0.03
	Z-score	negative a	ref.
		low-positive	0.05	0.16	0.8
		high-positive	-0.39	0.16	0.01
TH	mg/cm2	negative c	ref.
		low-positive	-0.03	0.02	0.10
		high-positive	-0.03	0.02	0.08
	Z-score	negative c	ref.
		low-positive	0.00	0.13	1.0
		high-positive	-0.30	0.13	0.02
MCP d	mg/cm2	negative a	ref.
		low-positive	0.01	0.01	0.4
		high-positive	0.00	0.01	0.4

BMD was measured either as mg/cm² or as Z-scores.

^a Multiple linear regression analysis including as covariates sex, BMI, age at initiation, and menopause status

^b Idem as ^a plus a covariate for ethnicity

^c Idem as ^a plus a covariate for disease activity measured with HUPI

^d Z-scores for BMD at MCP joints are not available