Table 2.

Treatment data and risk of recurrence in association with potential risk factors

Variable	Value	Risk	95% CI for risk		p Value
			Lower	Upper
Patient age at diagnosis (years)*	31.1 (12.8)	0.95	0.89	1.03	0.20
Gender
Male	21	0.98	0.25	3.88	0.98
Female	25	1.00
Location
Femur, proximal	5	2.62	0.56	123.26	0.62
Femur, distal	11	2.05	0.21	20.51	0.54
Tibia, proximal	9	0.87	0.72	10.53	0.91
Tibia, distal	5	1.79	0.98	33.06	0.69
Fibula, proximal	2	7.09	0.39	128.21	0.19
Humerus, proximal	5	0.81	0.04	15.39	0.89
Humerus, distal	2	0.00	0.00	-	0.99
Distal radius	7	1.00
Tumor extension
T1	24	0.33	0.08	1.30	0.11
T2	22	1.00
Pathologic fractures
No	42	2.26	0.07	74.71	0.65
Yes	4	1.00
Treatment
Wide resection	18	0.12	0.01	0.92	0.04
Intralesional curettage	28	1.00
Adjuvants
PMMA + phenol	14	0.11	0.14	0.91	0.04
Bone grafting + phenol	14	1.00

* Values are expressed as mean, with standard deviation in parentheses; PMMA = polymethylmethacrylate.