#NEWLINE# def riskratio_confint( self , alpha = 0.05 , method = 'normal' ) : #NEWLINE# #INDENT# "\n        A confidence interval for the risk ratio.\n\n        Parameters\n        ----------\n        alpha : float\n            `1 - alpha` is the nominal coverage probability of the\n            confidence interval.\n        method : string\n            The method for producing the confidence interval.  Currently\n            must be 'normal' which uses the normal approximation.\n        " #NEWLINE# ( lcb , ucb ) = self . log_riskratio_confint ( alpha , method = method ) #NEWLINE# return ( np . exp ( lcb ) , np . exp ( ucb ) )