Table 5.

Association of body composition with the DAS28-P

Variable	Male						Female
	Unadjusted β	SE	p value	Adjusted β	SE	p value	Unadjusted β	SE	p value	Adjusted β	SE	p value
Age	–0.004	0.002	0.034	NA			0.001	0.001	0.193
Disease duration, yr	0.005	0.005	0.403	NA			0.001	0.002	0.673
Anti-CCP	0.022	0.059	0.713	NA			–0.063	0.024	0.009
Current steroid dose	0.001	0.017	0.957	NA			0.015	0.008	0.051
BMI	0.003	0.007	0.696	NA			0.003	0.003	0.018
Skeletal muscle mass	0.005	0.005	0.348	NA			0.002	0.004	0.635
Body fat mass	0.001	0.004	0.715	NA			0.002	0.001	0.165
Bodyfat/skeletal muscle ratio	0.017	0.035	0.638	NA			0.077	0.030	0.012	0.073	0.037	0.046
HAQ	0.149	0.078	0.062	NA			0.110	0.018	< 0.001	0.082	0.210	< 0.001

DAS28, disease activity score in 28 joints; DAS28-P, an index derived to measure the subjective component of DAS28; SE, standard error; NA, not applicable; CCP, citrullinated protein antibody; BMI, body mass index; HAQ, health assessment questionnaire.