Table 2.

Demographics

	n-3 Sample (N=344)		Diet Sample (N=299)		Full AHAB Sample (N=1295)
	Mean	SD	Mean	SD	Mean	SD
Age	44.37	6.72	44.53	6.69	44.63	6.74
Sex (% male)	46.8%		48.8%		47.3%
Race (% Caucasian)	88.4%		89.0%		83.5%
Years of Schooling	15.97	2.65	16.01	2.71	15.71	2.84
Smoking (% Smokers)	12.2%		18.7%		16.4%
Ann. Household Income (mean range / % in range)	$35,000 – $49,999	20.3%	$35,000 – $49,999	18.6%	$35,000 – $49,999	15.3%
Drinks / Week	2.92	4.23	2.93	4.30	3.80	7.50
IQ	115.78	10.35	115.80	10.29	116.09	12.79
Kilocalories	2447.91	1727.26	2408.07	1694.53	2416.47	1839.74
AA	8.76	1.94	8.50	1.82
DHA	1.74	0.86	1.62	0.74
EPA	0.50	0.36	.050	0.38
AA:DHA	5.99	2.42	6.13	2.42
Calories from Fat			33.86	7.93
Calories from Saturated			11.60	3.36
Fat
N-Back Factor
Letter 1-Back	51.89	4.21	51.95	4.06	51.15	5.04
Letter 3-Back	38.68	6.53	38.51	6.60	37.93	6.96
Spatial 1-Back	50.09	5.08	50.09	4.95	49.26	6.10
Spatial 2-Back	41.50	6.62	41.43	6.63	40.70	7.47
Trail Making Factor
Trail B Time	52.72	18.29	53.45	18.85	55.67	22.14
Trail B – A Time	28.01	16.43	28.42	17.09	30.65	19.56
Logical Memory Factor
Memory Recall	29.22	8.15	29.09	8.36	28.37	8.05
Memory Recognition	26.97	2.44	26.92	2.48	26.67	2.52

Population Demographics: demographic information as well as descriptive statistics of cognitive performance for the full sample of participants