Compared with the conservative group , the barium group had significantly ( P < 0.05 ) fewer hospitalizations per patient ( 1.7 vs 1.2 ) , units of blood transfused ( 1.9 vs 0.7 ) , colonoscopies ( 1.4 times vs 1.1 times ) , and hospital stay days ( 15 days vs 11 days ) during the follow-up period .