The Investigation and DEtection of urological Neoplasia in paTIents reFerred with suspected urinary tract cancer: A multicentre analYsis (IDENTIFY)
IDENTIFY Urinary Tract Cancer Prediction Model (under construction)

How is this calculator to be used?

This calculator should be used for patients who have visible or non-visible haematuria that have been referred to secondary care for the investigation of suspected urinary tract cancer. It should not be used for patients that have any history of urological malignancy or being are referred for suspected recurrence of urological malignancy.

How do I use the calculator?

Fill in the details of the patient, including their age in years, if they have visible haematuria or not, if they are male or female etc.

What is the output of the calculator?

The calculator will give you the patient’s predicted risk of urinary tract cancer, as well as their risk category. The low risk category has been set at less than 3% predicted risk of cancer. The other risk categories have been set according to the distribution of cancer in the original IDENTIFY cohort.

How should I interpret the output of the calculator?

The risk categories are guides only, and the predicted risk that is calculated should be discussed with the patient and the clinician to agree together how best to proceed with further investigation, if required.

How do I know this calculator is accurate?

No predictive model in medicine is perfect. Model performance is assessed in many ways, but commonly the area under the receiver operating characterisatic curve is used (AUC). The AUC of this model in the IDENTIFY Cohort was 0.79 which is good. The model has been internally validated using bootstrapping.

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