Regression analysis with adjustment for both sex and initial values of 25 ( OH ) D revealed that consumption of either supplement , fortified orange juice or fortified milk resulted in a 20.8 nm [ confidence interval ( CI ) = 17.4-23 .9 ] , 9.9 nm ( CI = 7.4-12 .3 ) or 6.9 nm ( CI = 3.3-10 .5 ) increase in circulating 25 ( OH ) D compared to the related control groups .