Self-reported health	Very good/Good	1.76	13.75	38.71	45.78	100.0	0.0001
Self-reported health	Fair/Poor/Very poor	2.90	18.01	38.56	40.53	100.0
Memory	Very good/Good	1.62	14.31	38.06	46.01	100.0	<0.0001
Memory	Fair/Poor/Very poor	3.07	17.96	38.94	40.02	100.0
Take care of other household member	Yes	0.58	12.57	41.28	45.57	100.0	<0.0001
Take care of other household member	No	3.14	17.86	37.75	41.25	100.0
Walking difficulties	A lot/Cannot do	6.93	21.75	35.31	36.01	100.0	<0.0001
Walking difficulties	Some/None	1.64	15.55	39.26	43.55	100.0
Receive regular assistance	Yes	2.31	15.17	37.65	44.88	100.0	<0.0001
Receive regular assistance	No	2.89	19.12	40.35	37.64	100.0
Illnesses/injuries limited usual activities	Yes	2.39	16.47	36.66	44.49	100.0	0.2098
Illnesses/injuries limited usual activities	No	2.58	16.62	39.61	41.19	100.0
Bodily pains	Moderate/Severe	2.16	18.19	39.10	40.55	100.0	0.3528
Bodily pains	None/Mild	2.62	16.12	38.47	42.79	100.0