Development and calibration of a novel positive mindset item bank to measure health-related quality of life (HRQoL) in Singapore.

ABSTRACT:

Background

Positive mindset (PM) is an important domain of health-related quality of life in Singapore, a multi-ethnic urban city state in Southeast Asia. We therefore developed and calibrated a novel item bank to measure and improve PM.

Methods

We developed an initial candidate pool of 48 items from focus groups, in-depth interviews and existing instruments locally developed and validated for use in Singapore. We administered all items in English to a multi-stage sample stratified for age and gender, of subjects with and without medical conditions recruited from the community and a hospital, and calibrated their responses using Samejima's Graded Response Model. We evaluated a final 36-item bank with respect to Item Response Theory (IRT) model assumptions, model fit, differe

SUBMITTER: Kwan YH 

PROVIDER: S-EPMC6668803 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature