TABLE 1.

Demographic characteristics of subjects.

	Total	Control	MCI	p
N	973	442	531
Age	69 (67, 73)	70 (67, 73)	69 (67, 73)	0.857
Female, n (%)	627 (59.8%)	313 (65.1%)	314 (55.4%)	< 0.003**
MoCA score	21 (17, 23)	22 (20, 25)	19 (15, 22)	< 0.001**
BMR, kcal	1,259 (1,156, 1,385)	1,265 (1,157, 1,376)	1,254 (1,155, 1,388)	0.844
Education, n (%)				< 0.001**
Illiterate	218 (22.4%)	153 (34.6%)	65 (12.2%)
Primary school	323 (33.2%)	175 (39.6%)	148 (27.9%)
Junior high school	350 (36.0%)	81 (18.3%)	269 (50.7%)
High school and above	82 (8.4%)	33 (7.5%)	49 (9.2%)

BMR, basal metabolic rate; MCI, mild cognitive impairment. **p < 0.01.