Fig. 1.
Time course probabilities for relapse of appendicitis confirmed at appendectomy in 710 patients who experienced an initial favourable treatment response to antibiotics for their acute appendicitis in randomized (RCT, n = 97) and population-based studies (PBS, n = 342) as well as in non-randomized (Non-R, n = 271) treatments as described in Materials and methods. The slopes for the three patient groups (RCT, PBS, Non-R) were similar (not shown)