Hi, I am running the following program

Regression analysis for predictors of ICU admission(icu) against patient variables such as (age), (race), and other patient parameters(insur los hospday i.loc cancel orgdys___0 orgdys___1 etc).

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Code: logistic icu age race i.insur los hospday i.loc cancel orgdys___0 orgdys___1 orgdys___2 orgdys___3 orgdys___4 orgdys___5 sirs___0 sirs___1 sirs___2 sirs___3 flu hypoten abx ams qsofa___0 qsofa___1 qsofa___3 t2dm htn chf cad esrd copd afib cld smok alc i.bmi art

Result:

Array

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I do not understand why I have so many missing values for p-value and CI etc


However, when I run a subset of the patient parameters such as the following example, I get meaningful results.


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Code: logistic icu age race i.insur los hospday i.loc cancel orgdys___0 orgdys___1 orgdys___2 orgdys___3 orgdys___4 orgdys___5 sirs___0 sirs___1 sirs___2 sirs___3

Results:
Array

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Can someone please help me understand why the former code generates so many missing values in the results?