Validity and reliability of the left ventricular assist device self-care behaviour scale

Naoko P. Kato*, Semyon Melnikov, Quin E. Denfeld, Jesus Casida, Anna Strömberg, Tuvia Ben-Gal, Christopher S. Lee, Tiny Jaarsma

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Background Adequate self-care behaviour is essential for patients with a left ventricular assist device (LVAD) to prevent complications, prolong life, and optimise quality of life. However, there were no valid and reliable measurements available to assess self-care behaviour among patients with LVAD. We have previously developed the 33-item LVAD self-care behaviour scale. Objectives To evaluate psychometric properties of the 33-item LVAD self-care behaviour scale. Methods and results Data on 127 patients with a LVAD in Israel, Japan, and the USA were analysed (mean age 51±14.3, 81% male). Exploratory factor analysis extracted three factors, and 13 items were excluded from the scale. Internal consistency assessed by Cronbach’s alpha was acceptable for the total scale (α = 0.80) and the three subscales: Factor 1: Monitoring (α = 0.81), Factor 2: Heart failure self-care (α = 0.67), and Factor 3: LVAD self-care (α = 0.63). The 20-item version of the LVAD self-care behaviour scale had sufficient convergent validity with another scale that assessed self-care related to the driveline of LVAD (r = 0.47, p<0.001). Test–retest reliability was adequate (intraclass correlation coefficient = 0.58). Conclusions The 20-item version of the LVAD self-care behaviour scale showed adequate validity and reliability. The scale is ready for use in clinical practice and research. Additional testing might further optimise the scale.

Original languageEnglish
Article numbere0275465
JournalPLoS ONE
Volume18
Issue number2 February
DOIs
StatePublished - Feb 2023

Funding

FundersFunder number
Japan Society for the Promotion of ScienceJP15K20693

    Fingerprint

    Dive into the research topics of 'Validity and reliability of the left ventricular assist device self-care behaviour scale'. Together they form a unique fingerprint.

    Cite this