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stat.ME2025
An optimal two-step estimation approach for two-phase studies
Qingning Zhou, Kin Yau Wong
Two-phase sampling is commonly adopted for reducing cost and improving estimation efficiency. In many two-phase studies, the outcome and some cheap covariates are observed for a la…
stat.ME2025
The Correlation Thresholding Algorithm for Exploratory Factor Analysis
Dale S. Kim, Audrey Lu, Qing Zhou
Exploratory factor analysis is often used in the social sciences to estimate potential measurement models. To do this, several important issues need to be addressed: (1) determinin…