Nonrestorative sleep scale: a reliable and valid short form of the traditional Chinese version.

ABSTRACT:

Purpose

Previous research has suggested the essential unidimensionality of the 12-item traditional Chinese version of the Nonrestorative Sleep Scale (NRSS). This study aimed to develop a short form of the traditional Chinese version of the NRSS without compromising its reliability and validity.

Methods

Data were collected from 2 cross-sectional studies with identical target groups of adults residing in Hong Kong. An iterative Wald test was used to assess differential item functioning by gender. Based on the generalized partial credit model, we first obtained a shortened version such that further shortening would result in substantial sacrifice of test information and standard error of measurement. Another shortened version was obtained by the optimal test assembly (OTA). The

SUBMITTER: Li S 

PROVIDER: S-EPMC7434790 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature