Development and calibration of a novel positive mindset item bank to measure health-related quality of life (HRQoL) in Singapore.
Yu Heng KwanElenore Judy B UyDianne Carrol BautistaXiaohui XinYunshan XiaoGeok Ling LeeMythily SubramaniamJanhavi Ajit VaingankarMei Fen ChanNisha KumarYin Bun CheungTerrance Siang Jin ChuaJulian ThumbooPublished in: PloS one (2019)
The 36-item PM item bank demonstrated satisfactory psychometric properties for the English-speaking Singaporean population. IRT model assumptions were sufficiently met and scores showed concurrent and known-groups validity. Future studies to evaluate the validity of PM scores when items are administered adaptively are needed.