#NEWLINE# @ cache_readonly #NEWLINE# def log_riskratio_se( self ) : #NEWLINE# #INDENT# n = self . table . sum ( 1 ) #NEWLINE# p = ( self . table [ : , 0 ] / n ) #NEWLINE# va = np . sum ( ( ( 1 - p ) / ( n * p ) ) ) #NEWLINE# return np . sqrt ( va )