Analyzing Longitudinal Multirater Data with Changing and Stable Raters

One issue in analyzing longitudinal multirater data arises if raters drop-in or drop-out throughout a longitudinal study. We term this issue random rater movement (RRM), assuming that the selection of raters into the study approximates a random process and is strongly ignorable. We explain how RRM can be modeled in case of longitudinal multirater designs with (a) interchangeable raters or (b) structurally different raters. To analyze measurement...