The individual-level factors were treated as categorical variables in the model.
exploredata-ZA5235_Varv332 exploredata-ZA5235_Varv330 exploredata-ZA5235_Varv335 exploredata-ZA5235_Varv328 exploredata-ZA5235_Varv333 exploredata-ZA5235_Varv337 exploredata-ZA5235_Varv325 exploredata-ZA5235_Varv326 exploredata-ZA5235_Varv338 exploredata-ZA5235_Varv334 exploredata-ZA5235_Varv329 exploredata-ZA5235_Varv339 exploredata-ZA5235_Varv331 exploredata-ZA5235_Varv340 exploredata-ZA5235_Varv327 exploredata-ZA5235_Varv336 exploredata-ZA5235_Varv324