Table 2.

Stepwise forward logistic regression for associated factors with intrinsic capacity decline

Factors	B	SE	Wald	df	Significance	OR	95% CI
Older age	0.647	0.09	48.426	1	<0.001	1.91	1.592–2.291
Northern region	0.466	0.09	26.993	1	<0.001	1.59	1.337–1.901
Low education	0.89	0.14	38.657	1	<0.001	2.44	1.839–3.223
Unmarried	0.395	0.11	14.157	1	<0.001	1.49	1.209–1.825
Low income	0.388	0.09	16.974	1	<0.001	1.47	1.226–1.773
Less exercise	0.293	0.1	8.69	1	0.003	1.34	1.103–1.628
Less meat intake	0.26	0.09	8.532	1	0.003	1.3	1.089–1.543
Insomnia	0.453	0.1	22.735	1	<0.001	1.57	1.305–1.894
Urinary incontinence	0.68	0.21	10.605	1	0.001	1.97	1.311–2.973
Constipation	0.408	0.13	10.605	1	0.001	1.5	1.175–1.924
Memory decline	0.714	0.08	73.427	1	<0.001	2.04	1.735–2.405
Slowness	0.407	0.1	15.908	1	<0.001	1.5	1.230–1.835
COPD	0.853	0.22	15.758	1	<0.001	2.35	1.540–3.576
Osteoarthritis	0.534	0.1	31.785	1	<0.001	1.71	1.417–2.054
Constant	−2.03	0.1	379.54	1	<0.001	0.13

The variables not in the equation were sex, living areas, alcohol consumption, coronary heart disease, diabetes, stroke and kidney disease.

COPD, chronic obstructive pulmonary disease; df, degrees of freedom.