Assessing the factor structure of well-being in older adults: findings from the National Health and Aging Trends Study

Abstract

Objectives: Well-being has been conceptualized as a two-dimensional construct that includes both hedonic and eudaimonic components. To date, existing measures of well-being may not adequately capture both of these components for older adults, and limited literature has explored whether the two constructs can be integrated into one factor to measure well-being in this population.

Method: This study examined the factor structure of the 11 well-being items from the National Health and Aging Trends Study (NHATS), a nationally representative panel study of Medicare recipients in the US. Using data from the 2011 wave, we divided the community-dwelling sample into two random subsamples, testing our theory in sample 1 (n = 3305) and examining the replicability of the solution in sample 2 (n = 3297).

Results: We conducted confirmatory factor analyses using a correlated uniqueness approach to account for the frequency and negatively worded method effects. The findings from sample 1 indicated that the single factor structure was a superior fit to the data, and the solution was confirmed by sample 2 [χ²₍₃₃₎ = 85.002, p < .001, RMSEA = 0.022 (90% CI = 0.016-0.028), CFI = 0.993, TLI = 0.989, WRMR = 0.831].

Conclusion: Findings suggest that although the hedonic and eudaimonic components of well-being may be conceptually distinct, they are highly correlated in the NHATS well-being measures and should be measured as a single construct. Implications for future research using the NHATS and research using other data sources and focusing on other populations are discussed.

Keywords:

• well-being
• National Health and Aging Trends Study
• factor analysis

Acknowledgements

The authors would like to thank Dr Donna Harrington and Dr Charlotte Bright for their support with this paper.

Disclosure statement

No potential conflict of interest was reported by the authors.