TABLE 1.

Association of circPVT1 expression with clinicopathological features of osteosarcoma

Features	No. of cases	CircPVT1		P‐valuea
		High	Low
Age at diagnosis				.745
＜18	35	18	17
≥18	13	6	7
Gender				.771
Female	27	13	14
Male	21	11	10
Histological subtype				.849
Osteoblastic	9	6	8
Chondroblastic	18	5	6
Fibroblastic	38	7	5
Mixed	30	6	5
Clinical stage				.008
I+IIA	19	5	14
IIB/III	29	19	10
Distant metastasis				.009
Absent	21	6	15
Present	27	18	9
Tumour size (cm)				.149
<5	39	10	11
≥5	56	14	13
Anatomic location				.505
Tibia/femur	36	19	17
Elsewhere	12	5	7

^a P‐value obtained from Pearson Chi‐Square test.