Clinical Features in Juvenile-Onset Ankylosing Spondylitis Patients Carrying Different B27 Subtypes

Table 2

Comparison of clinical features, Bath AS indices, and inflammatory markers in JAS patients with B27-negative and different B27 subtypes.

HLA-B27; subtype	Age (y)	Onset age (y)	Disease duration (y)	BASDAI; (score)	BASFI; (score)	ESR; (mm/h)	CRP; (mg/L)
HLA-B27-negative	18.09 ± 3.65; ()	14.09 ± 2.11; ()	4.01 ± 4.39; ()	2.05 ± 1.42; ()	1.55 (1.21, 3.43 ); ()	7.00 (4.00, 9.40); ()	1.10 (0.60, 5.00); ()
HLA-B^*2704	21.79 ± 8.02; ()	13.54 ± 2.31; ()	8.25 ± 8.06; ()	4.22 ± 1.95^*; ()	3.00 (1.90, 5.20); ()	32.00 (14.00, 48.75)^*; ()	18.55 (5.9, 49.78)^*; ()
HLA-B^*2705	18.36 ± 3.96; ()	13.55 ± 1.77; ()	4.82 ± 4.46; ()	3.61 ± 1.26; ()	1.6 (1.00, 4.20); ()	14.0 (7.00, 48.00)^*; ()	5.80 (1.45, 34.30); ()
HLA-B^*2715	24.33 ± 6.43; ()	9.00 ± 4.00^*#a; ()	15.33 ± 4.16^*a; ()	3.28 ± 2.79; ()	1.125 (1.00, 1.25); ()	65.00 (4.00, 135.00)^*; ()	15.53 (1.50, 113.45); ()

Note: (1) data in the table was mean ± standard deviation or median (upper quartile, lower quartile); (2) ^* comparison between groups of different B27 subtypes and group of B27-negative, ; (3) ^# comparison between HLA-2715 and HLA-2704 group, ; (4) ^a comparison between HLA-2715 and HLA-2705 group, .