Table 2.

Baseline information of all cases by high-throughput sequencing.

Evaluation index	Experimental group			Control group
	AS1	AS2	AS3	IDD1	IDD2	IDD3
Age	55	24	44	56	52	26
Gender	Male	Male	Male	Male	Male	Male
HLA-B27	+	+	+	–	–	–
Bilateral sacroiliac joint injuries	+	+	+	–	–	–
Spinal and sacroiliac joint fusion	+	+	+	–	–	–