In the U.S., doctors usually get suspicious when a PSA level is 4.0 ng/mL. But studies show that many men with levels well above 4.0 ng/mL do not have cancer. And many men with prostate cancer have PSA scores well below this level. There are a lot of ways to tweak the PSA test to try to get better results.
The Standard Deviation Formula. In this formula, x is the value of the mean, N is the sample size, and x i represents each data value from i=1 to i=N.. The â symbol indicates that you must add up the sum. (x 1 - x) 2 + (x 2 - x) 2 + (x 3 - x) 2 + (x 4 - x) 2 + (x 5 - x) 2. . . + (x N-x) 2.
The MELD formula, which is calculated on the basis of three objective variables (creatinine, bilirubin, and INR), predicts liver transplant survivability of patients waiting for liver transplantation, with higher MELD scores associated with higher mortality rates.leveland Clinic's liver transplant program is a member of the Ohio Solid Organ Transplant Consortium (OSOTC) and the United Network for Organ Sharing (UNOS), meeting all their requirements for liver transplants.