Abstract 272

Age standardised admission rates per 100,000
1989/901999/00% change
MFMFMF
Crohn's disease12.418.214.220.7+14+14
% with operation33.430.632.631.2-2+2
Ulcerative colitis12.311.513.212.0+7+4
% with operation19.716.626.523.2+35+40