@article{article, title  = {{Confounding and Simpson's paradox.}},

 url = {{}},

 year = {{1994}},

 month = {{12}},

 author = {{Julious SA and Mullee MA}},

 doi = {{10.1136/bmj.309.6967.1480}},

 volume = {{309}},

 journal = {{BMJ}},

 issue = {{6967}},

 pages = {{1480-1481}},

 note = {{Accessed on 2024/10/19}}}