This protocol provides an easy-to-use, click-by-click guide for the analysis of longitudinal data from animals in SPSS. The authors use the MIXED procedure to deal with instances in which data are ...

Longitudinal survey data may comprise ordinal polytomous repeated observations and a set of multidimensional covariates for a large number of individuals. One of the main goals of the longitudinal ...

All major statistical software packages can read SPSS files. We’ll discuss the measures and what you can do with the dataset in more detail below, and offer some suggestions for analyzing the data ...

This article develops a methodology for regression analysis of ordinal response data subject to interval censoring. This work is motivated by the need to analyze data from multiple studies in ...

Pew Research Center releases its survey data publicly as IBM SPSS files with the .sav extension. But if you don’t have access to SPSS, there are free, open-source tools available to analyze and make ...