Table 2.

The relationship between serum of IL-6 and pathological characteristics in osteosarcoma patients (pg/ml)

Characteristic	n (%)	IL-6 expression	P values
Gender
Male	36	278.62±60.37	0.325
Female	18	267.87± 30.60
Age(years)
<20	31	276.72±60.37	0.187
≧20	23	268.79±34.74
Tumor size
≤5	20	289.36±40.36	0.376
>5	34	272.67±35.80
TNM stages
I-II	30	251.92±30.31	0.023*
III-IV	24	311.23±20.81
Lung metastasis
No	33	249.88±40.82	0.017*
Yes	21	303.93±29.29

*P<0.05