1. A randomized, controlled comparison of ibuprofen at the maximal over-the-counter dose compared with prescription-dose celecoxib on upper gastrointestinal mucosal injury 
James M. Scheiman, Byron Cryer, Michael B. Kimmey, Richard I. Rothstein, Dennis S. Riff, Michael M. Wolfe 
Clinical Gastroenterology and Hepatology 
Volume 2, Issue 4, Pages (April 2004)
DOI: /S (04)

2. Figure 1
Incidence of endoscopic ulcers in patients administered placebo; naproxen, 1000 mg/d; ibuprofen, 1200 mg/d; and celecoxib, 200 mg/d. Values shown as mean + SE. ∗P < 0.01 vs. placebo. #P = vs. celecoxib.
Clinical Gastroenterology and Hepatology 2004 2, DOI: ( /S (04) )

3. Figure 2
Incidence of erosions in patients administered placebo; naproxen, 1000 mg/d; ibuprofen, 1200 mg/d; and celecoxib, 200 mg/d. Values shown as mean + SE. ∗P < 0.01 vs. placebo. #P = vs. celecoxib.
Clinical Gastroenterology and Hepatology 2004 2, DOI: ( /S (04) )