Evaluation of appendicitis risk prediction models in adults with suspected appendicitis

Figure 1. Flow diagram of study inclusion in the systematic review

Figure 2. Flow diagram of patient inclusion in the cohort study NOM, non‐operative management of appendicitis.

Figure 3. Receiver operating characteristic (ROC) curves for 15 appendicitis risk prediction models in women and men a Women; b men. These receiver operating characteristic (ROC) curves are based on a complete‐case analysis for all 15 risk prediction models. As a result they may be based on fewer patients than when each model was validated individually (Table 3). This accounts for any minor discrepancies between the data presented here and those in Table 3. AAS, Adult Appendicitis Score; AUC, area under the ROC curve; AIRS, Appendicitis Inflammatory Response Score; RIPASA, Raja Isteri Pengiran Anak Saleha Appendicitis.

Figure 4. Proposed clinical algorithm for patients presenting with suspected appendicitis or right iliac fossa pain, stratified as low risk WCC, white cell count; CRP, C‐reactive protein; AIRS, Appendicitis Inflammatory Response Score; AAS, Adult Appendicitis Score.