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Table 6 Diagnostic screening criteria of MCPGS to detect children with acute appendicitis

From: Role of clinical judgment and tissue harmonic imaging ultrasonography in diagnosis of paediatric acute appendicitis

MCPGS Acute Appendicitis Free Total
Positive score (8+) 179 (100.0) 8 (9.3) 187 (70.6)
Negative score (< 8) 0 (0.0) 78 (90.7) 78 (29.4)
Total 179 (100.0) 86 (100.0) 265 (100.0)
  1. Sensitivity = 100%
  2. Specificity = 90.7%
  3. Positive predictive power = 95.72%
  4. Negative predictive power = 100%
  5. Overall agreement (accuracy) = 96.98%
  6. Kappa = 0.929 (P < 0.001)