@article{differenceindifferencesandratioinratios,
  title = {Difference in Differences and Ratio in Ratios for Limited Dependent Variables},
  author = {Myoung-jae Lee and Sanghyeok Lee},
  year = {2021},
  eprint = {2111.12948},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2111.12948v2},
}