Table 3.

Baseline COMPASS scores.

		Placebo (n = 45)	Lutein/zeaxanthin (n = 45)	p-valuea
Immediate word recall (n)	Mean	5.18	5.47	0.469
	SE	0.28	0.28
Delayed word recall (n)	Mean	3.07	3.18	0.804
	SE	0.30	0.33
Simple reaction time (ms)	Mean	368.75	355.27	0.383
	SE	10.15	11.53
Choice reaction time correct (%)	Mean	98.04	98.44	0.368
	SE	0.29	0.33
Choice reaction time for correct responses (ms)	Mean	593.33	559.79	0.063
	SE	12.58	12.64
Location learning trial 1 (displacement score)	Mean	16.58	14.91	0.330
	SE	1.36	1.02
Location learning trial 2 (displacement score)	Mean	10.02	10.27	0.876
	SE	1.18	1.02
Location learning trial 3 (displacement score)	Mean	7.27	5.47	0.195
	SE	1.13	0.80
Location learning trial 4 (displacement score)	Mean	4.93	4.33	0.653
	SE	1.04	0.83
Location learning trial 5 (displacement score)	Mean	2.60	2.64	0.955
	SE	0.58	0.54
Location learning recall (displacement score)	Mean	4.18	3.73	0.637
	SE	0.84	0.63
Numeric working memory correct (%)	Mean	93.85	94.67	0.480
	SE	0.92	0.68
Numeric working memory reaction time for correct responses (ms)	Mean	1,213.00	1,098.80	0.039
	SE	39.26	37.78
Word recognition correct (%)	Mean	76.89	76.59	0.886
	SE	1.41	1.49
Word recognition reaction time for correct responses (ms)	Mean	1,399.35	1,357.50	0.639
	SE	57.15	68.06
Picture recognition correct (%)	Mean	96.15	94.22	0.097
	SE	0.69	0.91
Picture recognition reaction time for correct responses (ms)	Mean	1,036.03	1,001.78	0.326
	SE	27.26	21.39
Corsi blocks span score	Mean	5.15	5.27	0.591
	SE	0.17	0.14
Digit vigilance correct (%)	Mean	90.17	92.15	0.200
	SE	1.17	0.98
Digit vigilance reaction time for correct responses (%)	Mean	471.44	469.23	0.767
	SE	5.80	4.63
Stroop correct (%)	Mean	97.28	96.50	0.487
	SE	0.62	0.92
Stroop reaction time for correct (ms)	Mean	1,313.24	1,291.83	0.754
	SE	47.04	49.15

^aIndependent samples t-test.