You specify which effects are fixed by using the FIXED= option in the MODEL statement. In general, if an interaction or nested effect contains any effect that is random, then the interaction or nested ...

PROC GLM fits some random-effects and repeated-measures models, although its methods are based on method-of-moments estimation and a portion of the output applies only to the fixed-effects model. PROC ...

Fixed and random factors may be crossed or nested ().When crossed, all combinations of factors are used to study the main effects and interactions of two or more factors ().In contrast, nested ...

Methods: We retrieved data from meta-analyses of diagnostic test accuracy published in the Cochrane Database of Systematic Reviews (2003–2020). We used mixed-effects random-intercept linear regression ...

Heqing Tan, Chun-bin Yu, Muqing Du, A multiple-path gradient projection method for solving the logit-based stochastic user equilibrium model, Journal of Transport and Land Use, Vol. 13, No. 1 (2020), ...