Table 2.

 Influence of family history, mutation location, sex, and history of abdominal surgery on multiple desmoid occurrence

Variable	No with desmoids/total No (%)	Univariate analysis		Multivariate analysis
		Odds ratio (95% CI)	p Value	Odds ratio (95% CI)	p Value
Proportion of family members with multiple desmoids
None	9/266 (3)	1	<0.001	1	<0.001
Any	17/54 (31)	13.12 (3.54, 48.50)		11.08 (3.02, 40.59)
Mutation location
Before 1399	19/303 (6)	1	0.005	1	<0.001
After 1399	7/17 (41)	10.46 (2.02, 54.11)		6.62 (2.34, 18.78)
Sex
Male	9/159 (6)	1	0.24	–	–
Female	17/161 (11)	1.96 (0.63, 6.10)
History of abdominal surgery
No	1/23 (4)	1	0.49	–	–
Yes	8/297 (8)	2.02 (0.26, 15.24)