From: Predictive values of Alvarado score, serum C-reactive protein, and white blood cell count in the diagnosis of acute appendicitis: a prospective study
Alvarado score
Histological finding of appendix
Positive for acute appendicitis
Negative for acute appendicitis
Low risk (1–4)
0
3
Intermediate risk (5–6)
11
9
High risk (7–10)
70
7