Description Usage Arguments Value References Examples
View source: R/NNTCalculation.R
For survival endpoints, the NNTKM is computed as the reciprocal of the absolute risk reduction (ARR), which is the difference in KaplanMeier estimated survival rates or the difference in cumulative incidences at a time point of clinical interest between the treatment and control groups.
1 
time 
The time to event or censor. 
status 
The indicator of the event or censor at the end of the followup. 
arm 
The variable indicates the treatment (arm = 1) and control (arm = 0) groups. 
tau 
The chosen time point of clinical interest. 
confint 
The percentile of confidence interval. The default value is

digits 
The decimal of the results. The default value is 
A matrix contains the KMNNT and its confidence interval.
1. Altman DG, Andersen PK: Calculating the number needed to treat for trials where the outcome is time to an event. BMJ 319:14925, 1999
2. Altman DG: Confidence intervals for the number needed to treat. BMJ 317:130912, 1998
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