@misc{indiciae41f6302b8b91,
  title = {Confounding and Simpson's paradox.},
  author = {S A Julious and M A Mullee},
  year = {1994},
  doi = {10.1136/bmj.309.6967.1480},
  url = {https://pubmed.ncbi.nlm.nih.gov/7804052/},
  note = {Source identifier: 7804052}
}