Coomputing the p-values for AalenAdditiveFitter

[rocreguant]

I tried to compute the covariates' p-values for the AalenAdditiveFitter since they are not directly provided by the model. To do that, I used the same approach used for Cox.

z_values = model.hazards_.mean()/model.summary['se(slope(coef))']
U = z_values **2
pvals = stats.chi2.sf(U,1)

This approach does not seem to work at all. Does anybody have an idea how to compute the p-values for this model?

[rocreguant]

Edit:
I was close

z = coef/se
pvalue = scipy.stats.norm.sf(abs(z))*2 

The times 2 because it's two-tail distribution