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. Author manuscript; available in PMC: 2016 May 23.
Published in final edited form as: Arch Phys Med Rehabil. 2009 Feb;90(2):285–295. doi: 10.1016/j.apmr.2008.08.214

Table 5.

Forward Regression Model on the Association With Physical Function in Patients With PFPS

Variables Total R2 Δ R2 df P
Model 1
  Age, sex .04 .04 2, 71 .287
Model 2
  Age, sex, anxiety .22 .18 1, 70 <.001
Model 3
  Age, sex, anxiety, FABQ-W .28 .06 1, 69 .019
Model 4
  Age, sex, anxiety, FABQ-W, FABQ-PA .32 .05 1, 68 .032
Coefficients for model 4B β P
Age −0.09 −0.05 .640
Sex −7.29 −0.22 .041
Anxiety −0.71 −0.28 .013
FABQ-W −0.49 −0.27 .021
FABQ-PA −0.80 −0.23 .032

NOTE. Criterion variable equals KOS-ADLS score.