Table 2.

Differences in disease activity and quality of life between the KP and NKP groups

	Kuwaitis N = 806	Non-Kuwaitis N = 845	All Patients N = 1651	p value
Number of tender joints	2.98 ± 6.04	2.85 ± 5.29	2.91 ± 5.67	0.645
Number of swollen joints	0.42 ± 1.79	1.11 ± 2.97	0.78 ± 2.49	< 0.001
VAS pain	1.71 ± 2.53	1.59 ± 2.38	1.65 ± 2.46	0.311
ESR	28.0 ± 22.4	29.6 ± 22.9	28.8 ± 22.7	0.167
CRP	5.31 ± 4.77	5.75 ± 5.00	5.54 ± 4.89	0.115
HAQ-DI	1.07 ± 0.72	0.81 ± 0.63	0.99 ± 0.70	< 0.001
Patient GA	1.69 ± 2.49	1.72 ± 2.42	1.71 ± 2.45	0.798
Physician GA	1.05 ± 1.79	1.17 ± 1.84	1.11 ± 1.82	0.190
DAS-28	2.64 ± 1.29	2.79 ± 1.27	2.72 ± 1.28	0.020
Steroid use	79 (9.8%)	147 (17.4%)	226 (13.7%)	< 0.001

p values are significant at p < 0.05

DAS-28 disease activity score-28, VAS visual analog scale, ESR erythrocyte sedimentation rate, CRP C-reactive protein, GA global assessment, HAQ-DI health assessment questionnaire-disability index