. 2020 Nov 9;12:601487. doi: 10.3389/fnagi.2020.601487

TABLE 1.

Comparisons of baseline characteristics between participants completed both cognitive assessments and those who dropped out from the second cognitive assessment.

	Participants completed the first cognitive assessment		Participants completed both cognitive assessments		Participants dropped out from the second cognitive assessment		P^c

	(n = 8,000)		(n = 5,711)		(n = 2,289)
	Mean/N^a	SD/%^b	Mean/N^a	SD/%^b	Mean/N^a	SD/%^b
Age	62.90	9.53	62.29	8.84	64.41	10.91	< 0.01
Sex							0.42
Men	3,691	46.57	2,640	46.28	1,051	47.30
Women	4,235	53.43	3,064	53.72	1,171	52.70
Education attainment							< 0.01
Lower than primary school	1,344	19.66	1,035	21.28	309	15.67
Primary school	1,378	20.16	1,064	21.88	314	15.92
Middle school	2,221	32.49	1,534	31.54	687	34.84
High school	1,386	20.28	906	18.63	480	24.34
College or higher	507	7.42	325	6.68	182	9.23
Yearly income (¥)	20233.73	95276.82	19142.80	90898.20	22993.60	105520.00	0.12
Smoking	2,133	26.66	1,595	27.93	538	23.50	< 0.01
Alcohol drinking	1,560	80.48	1,155	20.25	405	17.72	0.01
Common chronic health conditions
Hypertension	2,749	34.60	1,960	34.59	789	34.62	0.98
Arthritis	1,311	16.39	997	17.46	314	13.72	< 0.01
Cataract	813	10.43	544	9.80	269	11.98	< 0.01
Diabetes	654	8.19	442	7.75	212	9.27	0.03
Chronic lung disease	501	6.27	354	6.21	147	6.42	0.72
Angina	464	5.82	323	5.67	141	6.18	0.38
Asthma	176	2.21	115	2.03	61	2.68	0.08
Depression	37	0.46	28	0.49	9	0.39	0.56
Vegtable and fruit intake (*100g/day)	3.68	1.68	3.69	1.72	3.66	1.59	0.47
BMI	24.61	4.17	24.71	4.30	24.35	3.81	< 0.01
WHR	0.89	0.11	0.89	0.10	0.89	0.13	0.06
Physical activity level							0.56
Low level	4,801	60.01	3,407	59.66	1,394	60.90
Moderate level	2,276	28.45	1,643	28.77	633	27.65
High level	923	11.54	661	11.57	262	11.45
Sedentary time (hours/day)	4.23	2.43	4.10	2.41	4.56	4.56	< 0.01
Immediate verbal recall score	5.83	1.66	5.87	1.64	5.75	1.70	< 0.01
Delayed verbal recall score	5.14	2.07	5.15	2.05	5.12	2.13	0.65
Digit span score	11.13	2.58	11.22	2.62	10.93	2.47	< 0.01
Verbal fluency score	12.53	5.36	12.34	5.25	12.99	5.60	< 0.01

^aMean for continuous variables or number for categorical variables. ^bStandard deviation (SD) for continuous variables or percentage (%) for categorical variables. ^cCompared between participants who completed both cognitive assessments and those who dropped out from the second cognitive assessment.