Assessing dose–response effects of national essential medicine policy in China: comparison of two methods for handling data with a stepped wedge-like design and hierarchical structure

@inproceedings{Ren2017AssessingDE,
  title={Assessing dose–response effects of national essential medicine policy in China: comparison of two methods for handling data with a stepped wedge-like design and hierarchical structure},
  author={Yan Ren and Min Yang and Qian Li and Jay Pan and Erwei Song and Xiaosong Li and Qun Meng},
  booktitle={BMJ open},
  year={2017}
}
OBJECTIVES To introduce multilevel repeated measures (RM) models and compare them with multilevel difference-in-differences (DID) models in assessing the linear relationship between the length of the policy intervention period and healthcare outcomes (dose-response effect) for data from a stepped-wedge design with a hierarchical structure. DESIGN The implementation of national essential medicine policy (NEMP) in China was a stepped-wedge-like design of five time points with a hierarchical… CONTINUE READING