QTAB Twin Data Models

Example models for analysing the QTAB dataset

01_create_familywise_datafile.R

Example code to create a familywise dataset (i.e. one family per row) for use in OpenMx.

02_umx.R

Example code for running twin models using umx (a simplified version of OpenMx).

03_sat_covariate_OpenMx.R

Example code for assumption testing, estimating twin correlations, examining covariate effects (using OpenMx).

04a_uni_path_covariate_OpenMx.R

Example function for univariate twin analyses (using OpenMx).

04b_table_plots.R

Example code to estimate variance components (using function 04a_uni_path_covariate_OpenMx) and display estimates as a table and figure.

05_mixed_effects_datafile.R

Example code to create a long dataset for running linear mixed effects models on QTAB data

06_mixed_effects_lmer

Example code for running linear mixed effects models on QTAB data