I have found some articles comparing the effectiveness. Some have conflicting results...
www.ncbi.nlm.nih.gov/pubmed/8823568www.ncbi.nlm.nih.gov/pubmed/7696452www.ncbi.nlm.nih.gov/pubmed/8580278www.ncbi.nlm.nih.gov/pubmed/3317784www.ncbi.nlm.nih.gov/pubmed/1763292www.ncbi.nlm.nih.gov/pubmed/9690726My understanding is that entocort enema mostly has local effects, which is why all the studies done used colitis patients. Since I have crohn's in colon I think it would be better for me to use the hydrocortisone enema.