Side-by-side comparison helps you choose the right calculator for a specific clinical question.
Urology
Calculate the STONE score to predict kidney stones in ED patients with flank pain. High score ≥10: 88.6% probability. Moderate 5–9: 51.3%. Low ≤4: 9.2%. Guides CT imaging decisions.
Formula
STONE = Sex (M=2) + Timing (<6h=3, 6-24h=1) + Origin (non-Black=3) + Nausea (1-2) + Erythrocytes (3). Range 0–13.
Inputs
Urology
Estimate kidney stone recurrence risk at 2 and 5 years using the ROKS nomogram. Considers stone composition, number of episodes, and risk factors. Guides preventive treatment intensity.
Formula
Simplified ROKS model incorporating sex, age, BMI, stone history, family history, and composition.
Inputs