Figure 3. SROC assessment of diagnostic performance of F. nucleatum (black circle), B. fragilis (red rhombus) and E. coli (green square) for 5-FU resistance of colorectal cancer. SROC distributed advisably (AUC: 0.79, 95% CI: 0.74-0.81), which indicated no statistical significance (P = 0.83). SROC: Summary receiver operator characteristic curve.