Pressurised irrigation group has significantly more patients experiencing lower grade of pain during wound cleansing ( 93.4 % vs. 84.2 % ; p = 0.02 ) , and significantly higher median satisfaction with either comfort or cleansing method ( MD 1 [ 95 % CI : 5-6 ] ; p = 0.002 ; MD 1 [ 95 % CI : 5-6 ] ; p < 0.001 ) than did swabbing group .