A higher proportion of subjects in the TE group graded their degree of comfort as very or rather comfortable ( 28.4 % in the PO group , 65.1 % in the TE group ; p = 0.000 ) and had greater preference for future colonoscopy ( 69.6 % in the PO group , 82.5 % in the TE group ; p = 0.030 ) , compared with the PO group .