Table 1.

Clinical, laboratory, and demographic characteristics of sarcoidosis patients with (N = 6) and without (N = 36) sacroiliitis.

Parameter	Patients with sacroiliitis (% of total)	Patients without sacroiliitis (% of total)	P value
Age, mean (year)	55	43.7	0.046
Gender (female)	6 (100%)	26 (72.2%)	0.308
Disease duration (month)	17.8	41.3	0.800
Inflammatory back pain	6 (100%)	8 (22.2%)	0.001
Enthesitis	6 (100%)	6 (16.7%)	0.000
Erythema nodosum	5 (83.3%)	15 (41.7%)	0.087
Uveitis	0 (0%)	3 (8.3%)	1.000
Ankle arthritis	6 (66.7%)	22 (61.1%)	1.000
Elevated serum ACE level	2 (33.3%)	13 (38.9%)	1.000
Elevated serum calcium level	2 (33.3%)	4 (11.1%)	0.197
Elevated serum D3 level	0 (0%)	2 (5.6%)	1.000
HLAB27 positive	0 (0%)	2 (5.6%)	1.000
Elevated ESR	3 (50%)	26 (72.2%)	0.353
Elevated CRP	2 (33.3%)	28 (77.8%)	0.046

ACE: angiotensin converting enzyme; ESR: erythrocyte sedimentation rate; CRP: C reactive protein.