Developing an accurate and efficient tool for the internalizing spectrum: A simulation study of the adaptive algorithm to the Inventory of Depression and Anxiety Symptoms II (IDAS-II).

ABSTRACT:

Objectives

This research simulates an adaptive version of the IDAS-II (IDAS-CAT).

Methods

2021 participants from both community (n = 1692) and patients (n = 329) samples completed the IDAS-II. Item response theory metric properties of the IDAS-II full test and the 20-items of the general depression (GD) scale were obtained. The efficiency and accuracy of different computerized adaptive algorithms were simulated. Different subsamples completed additional external measures in order to gather evidence of validity of the scores estimated with the simulated adaptive algorithms selected.

Results

Both unidimensional computerized adaptive testing algorithm selected for the GD scale and the bifactor model chosen for the full test, allow 70% reduction in the length of administr

SUBMITTER: Sanchez-Garcia M 

PROVIDER: S-EPMC11378603 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature