. 2020 May 6;12(5):1321. doi: 10.3390/nu12051321

Table 1.

Serum carotenoid levels during the study period.

	LumegaZ™ Group N = 14		Change within Group Comparison to Baseline	PreserVision™ Group N = 14		Change within Group Comparison to Baseline	Between Groups Comparison of Baseline	Between Groups Comparison of Change Over 12-Week Period
Mean (SD)	Baseline	12-Week	p-Value	Baseline	12-Week	p-Value	p-Value	p-Value
Lutein	0.273	0.705	<0.0001	0.300	0.400	0.157	0.63	<0.0001
Lutein	(0.097)	(0.239)	<0.0001	(0.174)	(0.175)	0.157	0.63	<0.0001
Zeaxanthin	0.123	0.194	0.0009	0.122	0.155	0.01	0.49	0.29
Zeaxanthin	(0.044)	(0.045)	0.0009	(0.041)	(0.039)	0.01	0.49	0.29
Meso-zeaxanthin	0.0005	0.086	<0.0001	0.0002	0.001	0.0001	0.11	0.0005
Meso-zeaxanthin	(0.0006)	(0.048)	<0.0001	(0.0004)	(0.0006)	0.0001	0.11	0.0005

Lutein, zeaxanthin and meso-zeaxanthin measured in µmol/L. Within-group comparison: two-tailed, paired samples t-test. Between-group comparison: two-tailed, independent samples t-test with unequal variance.