Fig. 3
From: Risk prediction models for colorectal cancer in people with symptoms: a systematic review
Area Under the Receiver Operating Characteristic curve of risk prediction models. ā indicates performance in a development population, black diamond in bootstrap resampling, ā in an internal validation, and black triangle in an external validation (referenced). Point colours correspond to study design; red represents case-control, green cross-sectional and yellow cohort studies. CRCā colorectal cancer. WNS ā weighted numerical score