what is the correlation between age group and longitudinal change is longitudinal variability independent of age age group interactivity in a linear model for longitudinal change age-related longitudinal change what would be the relationship between groups, age, and longitudinal change? how do longitudinal change affect age which variable is a dependent variable in a mixed linear model based on the longitudinal data in r does lme show interaction age vs group interaction can r test the relationship between age and longitudinal data? which type of interaction is tested with age age and longitudinal effects age interaction regression what is the relationship between time and the age group age and longitudinal effect age vs group interaction what type of relationship is observed between age and the interaction with longitudinal data? what is the interaction between the age group and longitudinal change what is the relationship between age, group status, and r how to test interaction of age and group