Figure 3From: Faecal blood loss with aspirin, nonsteroidal anti-inflammatory drugs and cyclo-oxygenase-2 selective inhibitors: systematic review of randomized trials using autologous chromium-labelled erythrocytesAverage daily faecal blood loss in individual trials of aspirin according to daily aspirin dose. The size of the symbol is proportional to the number of individuals (inset scale).Back to article page