Statistical AnalysesAll statistical analyses were conducted with SPSS Version 21.0 (SPSS, IBM Corp, Armonk, NY). Missing nominal values were deleted listwise on a test-to-test basis. Missing values for the DPA and FABQ were treated conservatively and replaced with the mean value for the individual participant if < 20% of the items were missing.28 Participants missing ≥ 20% of their DPA or FABQ items were removed from analyses involving those PROs.