Age-related decrease in AMH according to previous therapy. Left pane: never exposed to anti-TNF (solid line, slope −0.149±0.07) vs. exposed to anti-TNF (dotted line, slope −0.161±0.05), slope difference 0.012±0.11, p=0.912. Right pane: no surgery (solid line, slope −0.115±0.04) vs. previous IBD surgery (dotted line, slope −0.289±0.08), slope difference 0.174±0.08, p=0.044.