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. Author manuscript; available in PMC: 2011 Jul 25.

Published in final edited form as: Clin Gerontol. 2011;34(2):89–102. doi: 10.1080/07317115.2011.539525

TABLE 4.

Logistic Regression for Objective Successful Aging with WRAT-3 Reading

Step		Chi-square	df	p-Value
I		12.78	3	.005
	Age			.039
	Gender			.286
	Education			.028
	Nagelkerke R² = 0.252
II		21.96	1	.000
	Age			.193
	Gender			.201
	Education			.298
	Illness			.012
	Cognition			.020
	Physical			.201
	Social			.987
	Δ Nagelkerke R² = 0.332
III		5.15	1	.023
	Age			.293
	Gender			.334
	Education			.763
	Illness			.014
	Cognition			.073
	Physical			.370
	Social			.904
	Reading Level			.038
	Δ Nagelkerke R² = 0.063

Note: Final model: Nagelkerke R² =0.647, WRAT-3 (p=.038) and Illness (p=.014).