@article{econhot_econhot-cited-448e99fd2dfd37e1,
  title = {The central role of the propensity score in observational studies for causal effects},
  author = {Paul R. Rosenbaum and Donald B. Rubin},
  journal = {Biometrika},
  year = {1983},
  volume = {70},
  number = {1},
  pages = {41-55},
  doi = {10.1093/biomet/70.1.41},
  url = {https://doi.org/10.1093/biomet/70.1.41}
}