From: Faecal blood loss with aspirin, nonsteroidal anti-inflammatory drugs and cyclo-oxygenase-2 selective inhibitors: systematic review of randomized trials using autologous chromium-labelled erythrocytes
Therapy
Individuals (n)
Faecal blood loss (n [%])
>5 ml/day
>10 ml/day
Placebo
149
0 (0%)
Aspirin ≥1,800 mg/day
309
97 (31%)
31 (10.0%)
Any NSAID
469
24 (5.1%)
4 (0.9%)