@article{wal87cod,
  title = {Coding Ordinal Independent Variables in Multiple Regression Analyses},
  volume = {125},
  journal = {Am J Epi},
  author = {Walter, A. R. and Feinstein, Alvan R. and Wells, C. K.},
  year = {1987},
  keywords = {ordinal-predictor,coding-in-terms-of-ix-vj},
  pages = {319-323},
  citeulike-article-id = {13265016},
  posted-at = {2014-07-14 14:09:47},
  priority = {0}
}

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