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Table 1 Clinicopathologic characteristics of patients with OS

From: Oxidized low density lipoprotein receptor 1 promotes lung metastases of osteosarcomas through regulating the epithelial-mesenchymal transition

Characteristic Paired primary-metastatic OS (n = 31) Metastatic OS (n = 30) Non-metastatic OS (n = 30)
Age, years 12 (5–23)a 11 (5–21)a 14 (7–23)a
Gender (%)
 Male 21 20 20
 Female 10 10 10
Primary tumor size (cm) 3.2 (2–20)a 3 (2–20)a 4 (2–20)a
Grade (%)
 1 25 24 26
 2 1 1 0
 3 3 3 2
 4 2 2 2
Follow-up (months)
 Median 42.3 39.1 52.5
 Range 2.5–114.3 2.5–98.5 13.2–114.3
 Mean 62.9 46.7 70.4
  1. aMedian values are listed