The unadjusted hazard ratio for positivity for @ or more autoantibodies among those randomized to be weaned to the casein hydrolysate was @ ( @ % CI , @-@ @ ) , compared with those randomized to the conventional formula , while the hazard ratio adjusted for HLA risk , duration of breastfeeding , vitamin D use , study formula duration and consumption , and region was @ ( @ % CI , @-@ @ ) .