Table 1 Demographic and characteristic information of the study subjects.

From: The effects of common variants in MDM2 and GNRH2 genes on the risk and survival of osteosarcoma in Han populations from Northwest China

Variables

Cases (N = 596)

Controls (N = 1696)

Statistics

P-values

Age, mean + sd

21.3 ± 5.2

21.5 ± 5.3

T = − 0.78

0.44

Gender, N (%)

Male

314 (53)

892 (53)

  

Female

282 (47)

804 (47)

χ2 = 0.00

1.00

Family history, N (%)

Yes

66 (11)

64 (4)

  

No

530 (89)

1632 (96)

χ2 = 42.58

6.80 × 10–11

Tumor location, N (%)

Axial

114 (19)

   

Long

482 (81)

   

Pathological fracture, N (%)

Yes

106 (18)

   

No

490 (82)

   

Metastasis, N (%)

Yes

78 (13)

   

No

518 (87)

   

Enneking stages, N (%)

I

72 (12)

   

II

446 (75)

   

III

78 (13)

   
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