Additional Analyses In a series of sensitivity analyses, we first estimated similar multivariable regression models separately for each of the ten most common physician specialties in the study ...

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Correlation coefficients are used to measure the strength of the linear relationship between two variables. A correlation coefficient greater than zero indicates a positive relationship, while a ...

We present in this paper a structural decomposition for general multivariable linear singular systems. Such decomposition has a distinct feature of capturing and displaying all the structural ...

In a fuzzy regression discontinuity (RD) design, the probability of treatment jumps when a running variable (R) passes a threshold (R0). Fuzzy RD estimates are obtained via a procedure analogous to ...