BACKGROUND/OBJECTIVES
Tradeoffs among competing health outcomes complicate the treatment of older, multimorbid adults, but little is known about patient attitudes towards these tradeoffs. This study describes the development of a scale assessing participants’ attitudes regarding two commonly encountered tradeoffs: quality versus quantity of life, and present versus future health.
DESIGN
Observational cohort study.
SETTING
Community.
PARTICIPANTS
Three hundred and fifty seven community-dwelling adults age ≥ 65.
MEASUREMENTS
An initial set of 20 items rated on a 5-point Likert scale of agreement was reduced using principal components analysis. Construct validity was evaluated through comparison of the scale with other tools addressing the same tradeoffs and analysis of participant characteristics associated with attitudes favoring quality over quantity of life and present over future health. Internal consistency was assessed with Cronbach’s alpha. Test-retest reliability was assessed using intraclass correlation coefficients (ICCs).
RESULTS
The scale consists of two subscales, each addressing one tradeoff, with a total of 10 items. All factor loadings were ≥ .5 and subscale scores were significantly different (p≤.05) in the expected directions when comparing with other tools and with participant race, education, and religious identity. Internal consistency was good (Cronbach’s α .85 and .84), and test-retest reliability was fair (ICC .63 and .47). Subscale scoremedians fell near the middle of each scale with narrow interquartile ranges, butover 15% of the sample scored at an extreme of each subscale.
CONCLUSION
This new scale captures patient views on two common tradeoffs in healthcare. While test-retest reliability was modest, its high validity suggests this tool can be used to familiarize patients with common tradeoffs and further explore influences on patient attitudes.