Table 1.

Patient Demographics, Clinical/Laboratory Data at Diagnosis, and Comparison of Takayasu Arteritis (TAK) and Giant Cell Arteritis (GCA)

	Total, n = 51	TAK, n = 24	GCA, n = 27	P
Female, n (%)	37 (73)	18 (75)	19 (70)	.712‡
Age at onset, mean (SD) years	50 (22.4)	28 (9.2)	69 (6.6)	<.0001*
Age at diagnosis, mean (SD) years	52 (21.7)	30 (10.0)	70 (6.3)	<.0001*
Delay from onset to diagnosis, median (IQR) months	4 (2-13)	7 (2-30)	3 (2-9)	.021†
CRP level at diagnosis, median (IQR) mg/l	8.3 (4.6-12.7)	6.4 (3.1-12)	8.3 (6.5-13.2)	.209†
ESR at diagnosis, median (IQR) mm/h	72 (53-103)	62 (48-71)	88 (73-116)	.001†
Symptoms
Fever at diagnosis, no. (%)	33 (65%)	16 (67%)	17 (63%)	.782‡
Arthralgia, myalgia at diagnosis, no. (%)	11 (22%)	1 (4%)	10 (37%)	.004‡
Limb claudication at diagnosis, no. (%)	12 (24%)	9 (38%)	3 (11%)	.027‡
Pulse loss or weakness at diagnosis, no. (%)	9 (18%)	6 (25%)	3 (11%)	.176‡
Blood pressure inequality at diagnosis, no. (%)	17 (33%)	12 (50%)	5 (19%)	.017‡
Bruit at diagnosis, no. (%)	19 (37%)	17 (71%)	2 (7%)	<.0001‡
Carotidynia at diagnosis, no. (%)	15 (29%)	10 (42%)	5 (19%)	.07‡
Chest or back pain at diagnosis, no. (%)	13 (26%)	11 (46%)	2 (7%)	.002‡
Headache at diagnosis, no. (%)	9 (18%)	2 (8%)	7 (26%)	.1‡
Temporal artery abnormality at diagnosis, no. (%)	9 (18%)	0	9 (33%)	.002‡
Polymyalgia rheumatica at diagnosis, no. (%)	4 (8%)	0	4 (15%)	.07‡
Positive temporal artery biopsy at diagnosis, no. (%)	7 (14%)	0	7 (26%)	.008‡
Jaw claudication at diagnosis, no. (%)	6 (12%)	0	6 (22%)	.016‡
Visual loss, no. (%)	4 (8%)	0	4 (15%)	.07‡
Complications
Ulcerative colitis, no. (%)	6 (12%)	6 (25%)	0	.007‡
Hypertension, no. (%)	27 (53%)	9 (38%)	18 (67%)	.037‡
Hyperlipidaemia, no. (%)	20 (40%)	8 (33%)	12 (44%)	.417‡
Diabetes mellitus, no. (%)	11 (22%)	1 (4%)	10 (37%)	.004‡
Smoking, no. (%)	14 (28%)	6 (25%)	8 (29%)	.712‡
Treatment
Glucocorticoids, no. (%)	51 (100%)	24 (100%)	27 (100%)	1‡
Initial dose of glucocorticoids, median (IQR) mg/day	50 (40-50)	50 (42-55)	40 (30-40)	<.001†

The P values are calculated for the differences between TAK and GCA.

CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; IQR, interquartile range.

*t-test.

^† Mann–Whitney U-test.

^‡ chi-square test or Fisher’s exact test with Bonferroni correction.