Table 3.

Univariate and multivariate analysis of pathological fracture (n = 155)

Clinical factors	No. of fractures (%)	Univariate analysis	Multivariate analysis
		P -value a	P -value b	OR c (95%CI d )
Sex
Male	47/101 (47%)	p = 0.006	p = 0.013	3.13 (1.27-7.68)
Female	13/54 (24%)
Age, years
<20	53/114 (46%)	p = 0.001	n.s.	⁻
≧20	7/41 (17%)
Site
Long bone	55/100 (55%)	p < 0.001	p = 0.012	4.33 (1.39-13.54)
Others	5/55 (9%)
Size, cm
≧5	37/66 (56%)	p < 0.001	n.s.	⁻
<5	23/89 (26%)
Multilocular
Yes	39/66 (59%)	p < 0.001	p = 0.040	2.45 (1.04-5.76)
No	21/89 (24%)
Ballooning
Yes	49/79 (62%)	p < 0.001	p = 0.011	3.32 (1.31-8.37)
No	11/76 (14%)
Cortex
<2 mm	52/94 (55%)	p < 0.001	p = 0.017	3.36 (1.24-9.13)
≧2 mm	8/61 (13%)

^achi-square test and Fisher’s exact test. ^bmultiple logistic regression. OR^c, odds ratio. CI^d, confidence interval.