Table 2.

Pain symptoms reported by serologically confirmed CHIKV patients at 40 months post-infection classified by joint pain status.

Variables	All CHIKV Cases, n = 82	Persistent Joint Pain, n = 67	No Persistent Joint Pain, n = 15	p
Symptoms caused patient to miss work/school	31 (38)	27 (40)	4 (27)	0.33
Symptoms affecting capacity to continue normal activities†	37 (47)	35 (54)	2 (14)	0.0071
Swollen joint count, mean ± SD	0.4 ± 0.9	0.4 ± 0.9	0.4 ± 0.9	0.90‡
Tender joint count, mean ± SD	5.2 ± 6.7	6.2 ± 7.1	0.7 ± 1.0	< 0.0001‡
Global pain score in the last week, mean ± SD (range 0–100)	56.8 ± 27.3	64.9 ± 20.3	20.7 ± 25.2	< 0.0001‡
Developed rheumatoid arthritis after CHIKV infection	2 (2)	2 (3)	0 (0)	0.50
Developed osteoarthritis after CHIKV infection	19 (23)	17 (25)	2 (13)	0.32
Developed depression after CHIKV infection†	9 (11)	6 (9)	3 (20)	0.22

Values are n (%) unless otherwise indicated.

^†Data were not available for all patients.

^‡Nonparametric Wilcoxon rank-sum test. Values in bold face are statistically significant. CHIKV: chikungunya virus.