I am using Stata 13. I have run a logistic regression to check the association of Obesity with several covariates. To assess the fit for the model I ran the Hosmer Lemeshow goodness of fit test and also a ROC curve. For the latter, I ran the Iroc command. This only gives the area under the curve but no p value for it. I would like to know how I can get the 95%CI and significance level for the ROC.
. lroc
Logistic model for BMIcat5
number of observations = 359
area under ROC curve = 0.7817
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