Welcome
What are you trying to do?
Data I already have in medicine and clinical research.
Your path
Create a study to hold it
A study is the container. You are not obliged to collect anything through ZStat.
Import the file
CSV for now, on the Data page. Leading zeros survive, and a column that is mostly numeric with a few words stays text rather than becoming numbers with holes in it.
Find out what you should be running
The guide for your field names the question in your own words and the procedure that answers it.
Analyse
Every result is stored with the digest of the data behind it, so you can prove later which version produced which figure.
What people in your field ask
Design and register - collect with consent - describe the sample - answer the primary question - check the assumptions - report to CONSORT or STROBE.
- Does the new treatment work better than the standard one?independent t
- Is the cheaper treatment no worse than the expensive one?non inferiority
- How good is this test at telling sick from well?diagnostic accuracy
- Is our new test better than the existing one?roc comparison
- Does the exposure raise the risk?risk measures
Watch for: p values in the baseline characteristics table of a randomised trial. Any imbalance is by definition chance, and CONSORT has advised against it since 2001.
See what your field uses The full guide for medicine and clinical research Start again