A pilot comparison of phospolipidated lutein to conventional lutein for effects on plasma lutein concentrations in adult people.

Changes within each supplement group were analyzed by paired t -test using http://www.fon.hum.uva.nl/Service/Statistics/Student_t_Test.html Group comparisons were done by unpaired t -test using http://www.fon.hum.uva.nl/Service/Statistics/2Sample_Student_t_Test.html Results After 10 days of supplementation, both supplements produced highly significant increases in plasma lutein values (Fig. 1 , p < 0.001 for each treatment, paired t -test).

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