A nonparametric modification is proposed for Cox's proportional hazards model (Cox, 1972, Journal of the Royal Statistical Society, Series B 34, 187-220), where the covariates are fixed, but their ...

This paper proposes a residual-based Lagrange Multiplier (LM) test for slope homogeneity in large-dimensional panel data models with interactive fixed effects. We first run the panel regression under ...

From 2013 to 2016, successful Medicare Shared Savings Program accountable care organizations reduced spending by shifting expenditures from the inpatient and postacute care setting to the physician ...