Table 4.

Summary of regression analysis for variables predicting speech recognition in noise. F and p values in this table refer to the effect of adding additional variables. F and p values for the overall models at each step are given in the text.

	Variable	β	t	R	R2	ΔR2	F	p	pr
Step 1				.68	.46	.46	78.00	<.01
	Age	.01	.09					.93	.01
	Hearing	.67	10.56					<.01	.61
Step 2				.69	.47	.01	4.60	.03
	Age	−.07	−.91					.36	−.07
	Hearing	.63	9.52					<.01	.58
	Reading comp.	−.15	−2.15					.03	−.16
Step 3				.69	.47	.00	.13	.94
	Age	−.06	−.89					.37	−.07
	Hearing	.63	9.35					<.01	.57
	Reading comp.	−.15	−2.13					.03	−.16
	Test type	.02	.22					.82	−.02
Step 4				.70	.49	.02	5.78	.02
	Age	−.09	−1.28					.20	−.10
	Hearing	.61	9.06					<.01	.56
	Reading comp.	−.12	−1.66					.10	−.12
	Test type	−.05	−.67					.50	−.05
	Working memory	−.18	−2.40					.02	−.18