Adapting the multilevel model for estimation of the reliable change index (RCI) with multiple timepoints and multiple sources of error.

ABSTRACT:

Objective

One of the primary tools in the assessment of individual-level patient outcomes is Jacobson and Truax, (1991's) Reliable Change Index (RCI). Recent efforts to optimize the RCI have revolved around three issues: (a) extending the RCI beyond two timepoints, (b) estimating the RCI using scale scores from item response theory or factor analysis and (c) estimation of person- and time-specific standard errors of measurement.

Method

We present an adaptation of a two-stage procedure, a measurement error-corrected multilevel model, as a tool for RCI estimation (with accompanying Statistical Analysis System syntax). Using DASS-21 data from a community-based mental health center (N = 379), we illustrate the potential for the model as unifying framework for simultaneously addr

SUBMITTER: Morgan-Lopez AA 

PROVIDER: S-EPMC9159694 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature