Pri preiskovancih so ugotavljali tveganje za krvavitev ob jemanju aspirina v majhnem odmerku, drugih NSAID in nitratov. V tednu dni pred sprejemom v bolnišnico je 120 bolnikov (10,7 %) s krvavitvijo vzelo majhen odmerek (300 mg ali manj) aspirina, 520 (46,3 %) druge NSAID, 60 (5,3 %) vazodilatatorne nitrate in 135 (12,0 %) zdravila, ki zavirajo izločanje kisline (zaviralec receptorjev H2 ali zaviralec protonske črpalke).
Results In the week before admission, 520 (46.3 percent) of the patients with bleeding had taken a nonsteroidal antiinflammatory drug other than low-dose aspirin, 120 (10.7 percent) had taken low-dose aspirin (300 mg per day), 60 (5.3 percent) a nitrovasodilator, and 135 (12.0 percent) an antisecretory agent such as a histamine H2-receptor antagonist or a proton-pump inhibitor.