Table 2.

Association between variables and recurrence

Variables	Number of cases (N = 37)	Recurrence	p value; chi-square analysis
Age, year			0.103
< 10	7	3
≧ 10	30	4
Sex			0.567
Male	24	4
Female	13	3
Location*			0.285
Tubular bone	29	6
Flat bone	2	1
Short bone	6	0
Contact with physis			0.006
Yes	12	4
No	25	3
Maximum length of tumor			0.471
≧ 50 mm	14	2
< 50 mm	23	5

*Comparison for pooled over strata