More individuals in the intervention group were taking calcium ( 54 % [ 54/101 ] vs. 20 % [ 20/100 ] ; RR 2.67 , 95 % CI 1.74 to 4.12 ) and vitamin D ( 33 % [ 33/101 ] vs. 20 % [ 20/100 ] ; RR 1.63 , 95 % CI 1.01 to 2.65 ) .
