Table 1.

Demographic and Clinical Characteristics of the Participants at Baseline.^*

Characteristic	MIND Diet (N = 301)	Control Diet (N = 303)
Demographic
Age — yr	70.4±4.2	70.4±4.2
Male sex — no. (%)	105 (34.9)	106 (35.0)
Race — no. (%)†
White	263 (87.4)	267 (88.1)
Black	35 (11.6)	31 (10.2)
Other	3 (1.0)	5 (1.7)
Education — yr	16.9±2.7	17.0±2.6
Clinical
Global cognition score‡	0.0±0.6	0.0±0.5
Apolipoprotein E ε4 allele carrier — no. (%)	76 (25.2)	98 (32.3)
Body-mass index§	33.8±5.4	34.0±6.5
CES-D scale score¶	1.2±1.6	1.2±1.4
MIND-diet score‖	7.7±1.9	7.8±1.8
Medical history — no. (%)**
Heart disease	12 (4.0)	15 (5.0)
Stroke	9 (3.0)	5 (1.7)
Diabetes	45 (15.0)	45 (14.9)
Hypertension	154 (51.2)	170 (56.1)

^*Plus–minus values are means ±SD. MIND denotes Mediterranean–DASH Intervention for Neurodegenerative Delay.

^†Race was reported by the participants.

^‡The global cognition score was derived from a 12-test battery. The raw scores from each test were converted to z scores, which were averaged across all tests to create the global cognition score; higher scores indicate better cognitive performance.

^§The body-mass index is the weight in kilograms divided by the square of the height in meters.

^¶Scores on the Center for Epidemiological Studies Depression (CES-D) scale range from 0 to 10, with higher scores indicating a greater number of depressive symptoms.

^‖MIND-diet scores were based on a 14-item food-frequency questionnaire that was devised by the investigators and designed to detect inadequate diet with respect to brain health. Scores range from 0 to 14, with lower scores indicating a less adequate diet with respect to putative brain health.

^**Medical history was reported by the participant.