Joint index vector: a novel assessment measure for stratified medicine in patients with rheumatoid arthritis

Journal of Big Data

Table 1 Demographic data of classified patients according to the joint index vector

	N	Disease duration	Age	Female (%)	SDAI	HAQ-DI
LDA	5135	11.9 (10.4)	64.5 (13.3)	76.7	2.8 (2.7)	0.4 (0.7)
EVN	2718	13.7 (11.1)	65.0 (12.5)	82.9	8.7 (6.8)	0.7 (0.8)
SML	797	12.1 (10.4)	62.1 (12.9)	82.2	14.0 (10.4)	0.7 (0.8)
LAR	2363	15.2 (11.7)	66.7 (12.5)	83.9	11.4 (7.0)	1.0 (0.9)
Total	11,013	13.1 (10.9)	64.9 (13.0)	80.2	6.9 (7.1)	0.6 (0.8)

Data are shown as mean (SD) unless otherwise described
SDAI Simplified Disease Activity Index, HAQ-DI the disability index of the Health Assessment Questionnaire, LDA low disease activity (|Vxy| ≤ 0.1), EVN evenly affected (|Vxy| > 0.1 and |z| ≤ 0.2), SML small joints dominant (|Vxy| > 0.1 and z < − 0.2), LAR large joints dominant (|Vxy| > 0.1 and z > 0.2)