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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: J Am Coll Surg. 2013 Sep 25;217(5):881–888. doi: 10.1016/j.jamcollsurg.2013.06.003

Table 3.

Multivariate Analysis of Risk Factors for Atypical Lipomatous Tumor Versus Lipoma (n=309)*

Risk Factor HR 95% CI p Value
Age ≥ 55 y 2.64 1.24–5.66 0.012
Prior operation at same site* 5.56 1.93–16.03 0.002
Extremity location (versus torso) 6.41 2.23–18.38 0.001
Size ≥ 10 cm 16.81 6.49–43.53 <0.0001
*

Patients referred immediately after insufficient excision were excluded from analysis on the grounds that they had a pathologic diagnosis a priori; prior operation refers to operation in remote past.