In general, if an interaction or nested effect contains any effect that is random, then the interaction or nested effect should be considered as a random effect as well. In the linear model, each ...

Rated as one of the top ten journals in healthcare administration, Medical Care is devoted to all aspects of the administration and delivery of healthcare. This scholarly journal publishes original, ...

In general, PROC MIXED is recommended for nearly all of your linear mixed-model applications. PROC NLMIXED handles models in which the fixed or random effects enter nonlinearly. It requires that you ...

This paper is on export, extensive margin, hysteresis effect, and dynamic probit model. In order to make public as quickly as possible the results of theoretical research and policy analysis, ...