Number Needed to Treat (NNT) Formula - Other Medical Calculators

Formulas Used:



1 / ((Ctrl.Gr.(w/ Cond) / Ctrl.Gr.(Total)) - (Act.Tx Gr.(w/ Cond) / Act.Tx Gr.(Total))

Ctrl.Gr.(Total) = No. of People in Control Group
Ctrl.Gr.(w/ Cond) = No. of People in Control Group who develop condition of interest during time interval
Act.Tx Gr.(Total) = No. of People in Active Treatment Group
Act.Tx Gr.(w/ Cond) = No. of People in Active Treatment Group who develop condition of interest during time interval

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