Coefficients of determination ( R ( 2 ) ) for Nutrihand and Tap & Track compared to DR entries into GRAND , respectively , were energy .56 , .01 ; carbohydrate .58 , .08 ; total fiber .65 , .37 ; sugar .78 , .41 ; protein .44 , .03 ; fat .36 , .03 ; saturated fatty acids .23 , .03 ; sodium .20 , .00 ; and for Nutrihand only for cholesterol .88 ; vitamin A .02 ; vitamin C .37 ; calcium .05 ; and iron .77 .