Sleep Disturbance Was Common in Polish Long-Term Care Residents and Tracked With Mood Symptoms
Sleep problems were widespread among older adults living in long-term care facilities in Poland, and they clustered with depressive symptoms and poorer quality of life. In this cross-sectional study of 80 residents aged 60 years and older from two facilities, the sleep burden was substantial even in a selected group with relatively preserved cognitive functioning. Insomnia symptoms, poor sleep quality, and daytime sleepiness all appeared at clinically meaningful rates, creating a profile that fits the realities of institutional aging: fragmented nights, reduced activity, comorbidity, and vulnerability to mood decline.
The simplest signal came from the numbers. Insomnia symptoms defined by an Athens Insomnia Scale score of 6 or higher were present in 50 participants, or 62.5%. Poor sleep quality, using a Pittsburgh Sleep Quality Index score above 5, affected 42 residents, or 52.5%. Increased daytime sleepiness, defined by an Epworth Sleepiness Scale score of 10 or higher, was identified in 21 participants, or 26.3%. Depressive symptoms above the adopted Geriatric Depression Scale cut-off were found in 37 residents, representing 46.3% of the sample.
One figure stands out sharply: nearly two-thirds of residents met the insomnia threshold.
Sleep, Mood, and Daily Function Moved in the Same Direction
The clinical pattern was not limited to sleep questionnaires. Greater insomnia severity and poorer sleep quality were associated with more severe depressive symptoms and with lower scores in several WHOQOL-BREF domains in unadjusted analyses. In a long-term care setting, that relationship is biologically plausible. Sleep disruption can intensify emotional reactivity, blunt restorative nighttime physiology, and worsen daytime fatigue, all of which can make low mood more likely and amplify the lived burden of chronic illness. Depressive symptoms can also feed back into sleep, reducing sleep efficiency, increasing early awakening, and making subjective sleep quality worse.
Functional and cognitive status were measured as well, using the Barthel Index and Mini-Mental State Examination. The cohort was described as having relatively preserved cognitive functioning, a detail that matters because severe cognitive impairment can complicate symptom reporting and distort questionnaire-based associations. Even in that more stable subset, sleep disturbances were still common. The message is clinically familiar: institutional residence does not protect against insomnia, and preserved cognition does not eliminate the burden of night-time wakefulness or nonrestorative sleep.
Adjustment Softened the Quality-of-Life Associations
The statistical pattern changed after accounting for depressive symptoms and available clinical and functional covariates. Once those variables entered the multivariable models, the associations between sleep measures and quality-of-life domains were attenuated. In practical terms, sleep and quality of life still appeared connected, but part of that relationship was explained by overlapping depression and other resident-level factors. For bedside care, this argues against interpreting poor sleep as an isolated complaint. In long-term care, insomnia often sits inside a broader syndrome that includes mood symptoms, reduced autonomy, medical multimorbidity, and the daily constraints of institutional living.
This attenuation also limits how aggressively the data can be interpreted. Because the design was cross-sectional, no temporal sequence can be established. Sleep disturbance may contribute to depressed mood, depression may impair sleep, and both may be shaped by underlying frailty or chronic illness. Residual confounding remains possible, especially in a sample this size, where unmeasured features of facility routine, medication exposure, pain burden, nocturia, and physical inactivity could have influenced both sleep and quality-of-life scores.
Why the Findings Matter for Long-Term Care Practice
Even with those caveats, the study offers a practical clinical signal: sleep screening in long-term care should not be treated as a cosmetic add-on to geriatric assessment. Residents with insomnia symptoms or poor sleep quality may warrant closer evaluation for depressive symptoms, discomfort, daytime inactivity, or environmental disruptions at night. The data also suggest that treating sleep in isolation may not be enough if mood symptoms are left unaddressed. In institutional geriatric care, sleep hygiene, light exposure, daytime mobilization, pain control, and depression screening often need to move together rather than in separate silos.
The cohort came from two long-term care facilities in Poland, which makes the findings locally grounded but also narrow in scope. Central and Eastern European institutional populations remain underrepresented in sleep research, so even a modest sample adds useful regional evidence. No external funding supported the work, and the investigators reported no competing interests. Ethical approval was obtained, and informed consent was secured from all participants, supporting the integrity of the observational design.
The most defensible conclusion is modest and concrete: sleep disturbance was common, depressive symptoms were common, and the two often traveled together in these residents. What cannot be claimed is causality. A larger longitudinal study would be needed to determine whether worsening sleep precedes mood decline, whether depressive symptoms drive poorer sleep, or whether both reflect a shared geriatric vulnerability that becomes visible only after institutionalization. For now, the clinical takeaway is to look for sleep problems early, measure depression alongside them, and avoid treating either symptom in isolation.