title: Psychometric Properties of the Dietary Salt Reduction Self-Care Behavior Scale.
abstract: Valid, reliable, and culturally-specific scales to measure salt reduction self-care behavior in older adults are needed. The purpose of this study was to develop the Dietary Salt Reduction Self-Care Behavior Scale (DSR-SCB) for use in hypertensive older adults with Orem's self-care deficit theory as a base. Exploratory factor analysis, Rasch modeling, and reliability were performed on data from 242 older Thai adults. Nine items loaded on one factor (factor loadings = 0.63 to 0.79) and accounted for 52.28% of the variance (Eigenvalue = 4.71). The Kaiser-Meyer-Olkin method of sampling adequacy was 0.89, and the Bartlett's test showed significance (χ2(df =36) = 916.48, p < 0.0001). Infit and outfit mean squares ranged from 0.81 to 1.25, while infit and outfit standardized mean squares were located at ±2. Cronbach's alpha was 0.88. The 9-item DSR-SCB is a short and reliable scale.
authors.affiliation: Boromarajonani College of Nursing, Bangkok.
authors.forename: Pratsani
authors.initials: P
authors.lastname: Srikan
authors.affiliation: Professor and Associate Dean for Research and Evaluation, University of Tennessee at Knoxville.
authors.forename: Kenneth D
authors.initials: KD
authors.lastname: Phillips
keywords: Orem; Rasch model; exploratory factor analysis; hypertension; older adults; salt reduction; self-care behavior