Association Between Depression Symptoms and Disability Outcomes in Older Adults at Risk of Mobility Decline.
Patricia M Bamonti, Meaghan A Kennedy, Rachel E Ward and 2 others
PMID 39006118WHAT IT FOUND
Depression symptoms linked to worse physical function and participation in older adults at risk of mobility decline.
However, depression did not predict how quickly these abilities declined over two years. Treat depression as a concurrent marker of current disability, not necessarily a driver of future rapid decline.
Key findings
01Higher depression symptom severity was associated with worse physical function and participation at each time point.
02Depression symptoms were not associated with the rate of change in physical disability or participation over the 2-year follow-up.
03The sample had low overall depression severity, with most participants scoring in the minimal range, which may have limited the ability to detect a link to decline.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The sample had very low levels of depression symptoms (mean PHQ-9 1.3), with 93.5% scoring in the minimal range. This restricted variability may have made it difficult to detect a signal linking depression to decline. Depression was assessed using a self-report screener (PHQ-9) rather than a clinical diagnostic interview, and it was not a primary outcome of the original study. Attrition was significant for the depression measure: only 61.0% of participants had complete data for both depression and disability outcomes at 24 months. Those with missing data were older, less educated, and had worse baseline function and depression scores, which may bias results. The follow-up period was only 2 years, which may be too short to capture the long-term impact of depression on mobility decline. Most participants who reported having depression had received treatment, meaning the sample represented a population with managed, rather than untreated, depression.
Declared interests
The authors declared no conflicts of interest. The study was supported by grants from the National Institute on Aging and the National Center for Advancing Translational Sciences.
The easy way to misread this
Do not conclude that treating depression will prevent functional decline in older adults based on this study. The results showed depression was associated with worse function at the same time, but not with a faster rate of decline over the next two years. The low severity of depression in the sample also limits generalizability to patients with severe, untreated major depressive disorder.