Table 5.

Association of Subclinical Disability Scores with Increases in Functional Limitations and Disability

	Likelihood of increase from 2004–2006†
Subclinical disability score used*	HAQ, unadjusted†	VLA disability, total	VLA disability, obligatory	VLA disability, committed	VLA disability, discretionary
Total	1.09 (1.01, 1.18)§	1.14 (1.06, 1.23)
Obligatory			1.78 (1.44, 2.19)
Committed				1.56 (1.27, 1.91)
Discretionary					1.17 (1.03, 1.33)

^*Subclinical disability score = number of activities in which accommodations but no difficulty reported. Calculated as total for all VLAs, and for VLA categories (obligatory, committed, and discretionary). To predict increase in HAQ and VLA total disability score, total subclinical disability score was used. To predict increase in obligatory, committed, and discretionary VLA disability, obligatory, committed, and discretionary subclinical disability scores, respectively, were used.

^†Increase defined as presence 0.5 SD increase in HAQ or VLA scores between 2004 and 2006.

^§Adjusted for age, sex, education, married/partner, duration of RA, number of painful joints, and baseline value of measure of functioning