2 citations · 3 across the 2 of their papers we have counts for
7 papers
The Design of Observational Longitudinal Studies
Xavier Basagana, Donna Spiegelman
This paper considers the design of observational longitudinal studies with a continuous response and a binary time-invariant exposure, where, typically, the exposure is unbalanced,…
Estimating the natural indirect effect and the mediation proportion via the product method
Chao Cheng, Donna Spiegelman, Fan Li
The natural indirect effect (NIE) and mediation proportion (MP) are two measures of primary interest in mediation analysis. The standard approach for estimating NIE and MP is throu…
swdpwr: A SAS Macro and An R Package for Power Calculation in Stepped Wedge Cluster Randomized Trials
Jiachen Chen, Xin Zhou, Fan Li +1
Background and objective: The stepped wedge cluster randomized trial is a study design increasingly used for public health intervention evaluations. Most previous literature focuse…
Interpretation of the individual effect under treatment spillover
Forrest W. Crawford, Olga Morozova, Ashley L. Buchanan +1
Some interventions may include important spillover or dissemination effects between study participants. For example, vaccines, cash transfers, and education programs may exert a ca…
Cox Model with Covariate Measurement Error and Unknown Changepoint
Sarit Agami, David M. Zucker, Donna Spiegelman
The standard Cox model in survival analysis assumes that the covariate effect is constant across the entire covariate domain. However, in many applications, there is interest in co…
Estimation in the Cox Survival Regression Model with Covariate Measurement Error and a Changepoint
Sarit Agami, David M. Zucker, Donna Spiegelman
The Cox regression model is a popular model for analyzing the relationship between a covariate and a survival endpoint. The standard Cox model assumes a constant covariate effect a…