In this paper, we propose two test statistics for testing serial correlation in semiparametric time series model that could allow lagged dependent variables as explanatory variables. The first one is testing for zero first-order serial correlation and the second is for testing higher-order...

Cancer often results in catastrophic health expenditures and creates a huge financial burden for families. We study the impact on patient finances and health outcomes of the national centralized drug procurement program in China for leukemia patients. The program reduced the price of the generic...