The purpose of this study is to assess effectiveness of vedolizumab versus ustekinumab in patients with Crohn's disease and vedolizumab versus tofacitinib in patients with ulcerative colitis, after non-response to anti-tumor necrosis factor (TNF) medications, using data from two existing cohorts.
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PROMIS Measures of Pain Interference
Timeframe: Single assessment, performed as close to 6 months after medication initiation as possible (4-10 month window)
PROMIS Measures of Fatigue
Timeframe: Single assessment, performed as close to 6 months after medication initiation as possible (4-10 month window)