No user IDs output from tutorial

[kevfrost]

Hi, I have Docker running, the Git libraries pulled down, everything runs smoothly in Anaconda Prompt (under administratior) but...

The output file is

"patient_id"

Please help.

[wjchulme]

Thanks for pointing this out. This is a problem with the documentation rather than with the cohort extractor. This commit hopefully clears things up. But to be clear: when the study definition doesn't define any variables the input.csv file is as you've described -- no data, just a patient_id heading. It doesn't create any actual patient IDs.

[kevfrost]

Many thanks for coming back to me. With a table that only has the header row extracted, this was a major worry that I was unable to use it.