SurvfuncRight.quantile_ci()

statsmodels.duration.survfunc.SurvfuncRight.quantile_ci

SurvfuncRight.quantile_ci(p, alpha=0.05, method='cloglog') [source]

Returns a confidence interval for a survival quantile.

Parameters:	p : float The probability point for which a confidence interval is determined. alpha : float The confidence interval has nominal coverage probability 1 - alpha. method : string Function to use for g-transformation, must be ...
Returns:	lb : float The lower confidence limit. ub : float The upper confidence limit.

Notes

The confidence interval is obtained by inverting Z-tests. The limits of the confidence interval will always be observed event times.

References

The method is based on the approach used in SAS, documented here:

http://support.sas.com/documentation/cdl/en/statug/68162/HTML/default/viewer.htm#statug_lifetest_details03.htm