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. Author manuscript; available in PMC: 2019 Apr 1.

Published in final edited form as: J Natl Med Assoc. 2017 Jun 7;110(2):190–196. doi: 10.1016/j.jnma.2017.05.002

Table 3.

Logistic Regression Predicting problems walking about ¼ mile or climbing ten steps

					95% CI

Predictor variable	B	S.E. (B)	Wald	OR	Lower	Upper
Difficulty w/self-care	1.629^***	0.287	32.241	5.097	2.905	8.942
Severe pain interference	1.032^***	0.129	63.764	2.81	2.179	3.616
Problems w/usual activities	1.993^***	0.175	129.61	7.336	5.205	10.338
Married	−.525^***	0.129	16.648	0.591	0.46	0.761
Over age 75	.468^***	0.128	13.318	1.596	1.24	2.05
Constant	−1 84^***	0.130	195.52	0.163

x² =525.56^*** df=5

^*

p<.05,

^**

p<.01,

^***

p<.001

Cox=.27; Nagelkerke=.38