@misc{indiciaecc40a61b952e,
  title = {Coding ordinal independent variables in multiple regression analyses.},
  author = {S D Walter and A R Feinstein and C K Wells},
  year = {1987},
  doi = {10.1093/oxfordjournals.aje.a114532},
  url = {https://pubmed.ncbi.nlm.nih.gov/3812437/},
  note = {Source identifier: 3812437}
}