TABLE II.

Predictors of Handrail Use at Three Months^*

		Percentage Correctly Predicted			Odds Ratio (Nagelkerke R2 Value)	Significance of Model (P Value)	Significance of Model if Variable Removed (P Value)
Model	Variables in Model	Handrail	No Handrail	Overall
Step 1	Age	42%	80%	65%	0.123	0.002	Age, 0.003
Step 2	Age, preoperative handrail use	47%	87%	71%	0.177	0.001	Age, 0.003; preoperative handrail use, 0.022

^*At three months, the best predictor of handrail use was age (Step 1). The addition of preoperative handrail use significantly improved the predictive ability of the model (Step 2).