Sleep quality and cognition linked to quality of life in 42 healthy older adults
In 42 healthy older adults, self-reported sleep quality and cognitive performance each predicted perceived quality of life, and sleep quality may have moderated their link; key relationships appeared only in women. The authors call these preliminary findings. [1]
Automatic summary · not editorially reviewed
The key findings
The final sample was 42 healthy older adults with a mean age of 66.57 years, 71.43% of them women. [1]
Cognitive performance and sleep quality each significantly predicted quality of life, and the moderation analysis explained 42.2% of the variance. [1]
Key relationships held only in women and were not statistically significant in men. [1]
The source at a glance
- Study type / format
- Abstract of a cross-sectional study with correlation, regression and moderation analyses.
- Population / context
- 42 healthy older adults (mean age 66.57 years; 71.43% women).
- Summary based on
- Study abstract
- Original publication
- September 17, 2026
Sleep, cognition and quality of life in older adults
The study asked whether sleep quality moderates the link between cognitive performance and perceived quality of life in healthy older adults, and also explored sex differences. The final sample was 42 people with a mean age of 66.57 years; 71.43% were women. Cognitive performance was measured with the Fototest, sleep quality with the Pittsburgh Sleep Quality Index (PSQI), and perceived quality of life with the EuroQoL-5D. The authors describe the work as preliminary.
Supporting source [1]
Sleep and cognition predicted quality of life
In the global sample, all three variables showed significant relationships. Both cognitive performance and sleep quality significantly predicted quality of life. The moderation analysis explained 42.2% of the variance, suggesting that self-reported sleep quality not only directly influences but also may moderate the relationship between cognitive performance and quality of life. These are associations from a small sample, not evidence of cause and effect.
Supporting source [1]
Key links only in women; small subjective sample
Key relationships were maintained only in women and did not reach statistical significance in men. The authors note a limited sample size and the use of a subjective sleep measure, so the results should be interpreted cautiously and replicated in larger studies that include objective sleep assessments. The abstract does not report how many men and women were in the sample.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The sample was small (42), sleep quality was self-reported rather than objectively measured, and the authors call the findings preliminary and in need of replication in larger studies. The abstract does not report how many men and women were included.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Aliño M, Molins F, Molins M, González L, Duque A, Mesa-Gresa P. · europepmc.org · September 17, 2026