Mayo PSC Risk Score Calculator

The Mayo Risk Score (R) = (0.0295 * (age in years)) + (0.5373 * LN(total bilirubin in mg/dL)) - (0.8389 * (serum albumin in g/dL)) + (0.5380 * LN(AST in IU/L) + (1.2426 * (points for variceal bleeding))

where:

  • LN indicates the natural logarithm.
  • AST = serum aspartate aminotransferase level.
  • Points for variceal bleeding: 0 if none, 1 if present.
  • Each unit increase in the Mayo Risk Score (R) is associated with a 2.5-fold increase in the risk of death.
  • Most references to the score round the coefficients to 2 decimal places.
  • The score shows very slight upward slope over time in stable patients, but during the terminal phase it shows an acceleration in progression (http://www.medal.org/).

    After entering your age, total bilirubin, albumin, AST and points for variceal bleeding (either 0 (if none) or 1 (if present)) click the Calculate button. Your Risk Score will then be computed and displayed in the "Computed Mayo Risk Score (R) =" text box.

    Enter Your Age (years):

    Enter Your Total Bilirubin (mg/dL):

    Enter Your Serum Albumin (g/dL):

    Enter Your AST (IU/L):

    Enter Your Variceal Bleeding Points (0 or 1):


    Computed Mayo Risk Score (R) =

    Mayo Risk Score and Risk Group:

  • If your Mayo Risk Score (R) is less than or equal to 0 then you are in the "low" risk group.
  • If your Mayo Risk Score (R) is greater than 0 but less than 2 then you are in the "intermediate" risk group.
  • If your Mayo Risk Score (R) is greater than 2 then you are in the "high" risk group.

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    David and Judy Rhodes
    Last Update: 11/30/05