Table 2.

Descriptive characteristics of respondents classified by cognitive transition

	Cognitively unimpaired to probable dementia					Mild cognitive impairment to death					Cognitively unimpaired to probable dementia
Characteristics	Have a friend1		No friend1		P	Have a friend2		No friend2		p	Have a college-educated family member1		Have no college-educated family member1		p
	n	%	n	%		n	%	n	%		n	%	n	%
Female	49	81.67	269	59.65	<0.0013	15	75.00	37	50.68	0.0523	101	66.01	217	60.61	0.2493
Education
Less than high school	20	33.90	169	37.64	0.6963	6	30.00	30	41.10	0.3123	32	21.19	157	43.98	<0.0013
High school graduate or equivalent	30	50.85	202	44.99		10	50.00	37	50.68		71	47.02	161	45.10
College graduate or beyond	9	15.25	78	17.37		4	20.00	6	8.22		48	31.79	39	10.92
Race/ethnicity
Non-Hispanic white	36	60.00	279	61.86	0.3234	12	60.00	45	61.64	0.9154	112	73.20	203	56.70	0.0064
Non-Hispanic black	20	33.33	109	24.17		6	30.00	23	31.51		28	18.30	101	28.21
Hispanic	3	5.00	46	10.20		1	5.00	3	4.11		10	6.54	39	10.89
Other minorities	1	1.67	17	3.77		1	5.00	2	2.74		3	1.96	15	4.19
Total	60		451			20		73			153		358

¹Among individuals experienced incidence of probable dementia from cognitively unimpaired. ²Among individuals experienced transition from mild cognitive impairment to death. ³Tested by Chi-square test. ⁴Tested by Fisher’s exact test.