Table 2 Univariate and multivariate Logistic regression for risk factors of metastasis in Ewing tumor patients

Variables

OR (95% CI)

p value

OR (95% CI)

p value

 ≤ 10

Reference

0.012*

Reference

0.144

 11–20

1.840 (1.271–2.665)

0.001**

1.517 (1.033–2.228)

0.034*

 21–30

1.973 (1.273–3.058)

0.002**

1.659 (1.054–2.610)

0.029*

 31–49

1.440 (0.826–2.511)

0.199

1.388 (0.780–2.470)

0.264

 ≥ 50

2.108 (1.009–4.403)

0.047*

2.082 (0.977–4.438)

0.058

 Male

Reference

 Female

1.013 (0.775–1.324)

0.926

Race

 White

Reference

0.751

 Black

1.346 (0.622–2.910)

0.451

 Other

0.994 (0.610–1.618)

0.980

 Limb

Reference

< 0.001***

Reference

< 0.001***

 Cranial

0.355 (0.150–0.843)

0.019*

0.486 (0.201–1.176)

0.110

 Spine

0.851 (0.482–1.502)

0.577

1.033 (0.572–1.865)

0.914

 Thoracic

1.212 (0.812–1.808)

0.347

1.245 (0.830–1.867)

0.289

 Pelvic

2.679 (1.975–3.635)

< 0.001***

2.492 (1.829–3.395)

< 0.001***

 < 5

Reference

< 0.001***

Reference

0.005**

 5–8

1.598 (1.040–2.456)

0.033*

1.362 (0.871–2.131)

0.176

 > 8

2.624 (1.764–3.903)

< 0.001***

1.914 (1.251–2.928)

0.003**