Figure 2From: Lutein-fortified infant formula fed to healthy term infants: evaluation of growth effects and safety Mean Z-Scores Over Time by Each Treatment - Weight-for-Age, Weight-for-Length, Length-for-Age, and Head Circumference-for-Age, Population: Intention to Treat. Z-scores calculated using the SAS program offered by the US CDC and found on its website: http://www.cdc.gov/nccdphp/dnpa/growthcharts/resources/sas.htm.Back to article page