@cache_readonly
def prsquared(self):
    'Cox-Snell Likelihood-Ratio pseudo-R-squared.\n\n        1 - exp((llnull - .llf) * (2 / nobs))\n        '
    return self.pseudo_rsquared(kind='lr')
Cox-Snell Likelihood-Ratio pseudo-R-squared.

1 - exp((llnull - .llf) * (2 / nobs))
@cache_readonly
def prsquared(self):
    'Cox-Snell Likelihood-Ratio pseudo-R-squared.\n\n        1 - exp((llnull - .llf) * (2 / nobs))\n        '
    return self.pseudo_rsquared(kind='lr')