Phase angle as a prognostic factor for one-year mortality in geriatric health service facility residents.
Minami Sato, Akira Kubo, Sho Tsukahara and 2 others
PMID 37915456WHAT IT FOUND
A lower phase angle was associated with death within one year in 96 female Japanese facility residents.
The paper proposed 2.95° as a cut-off for identifying one-year survival.
Key findings
01Among the 96 residents analysed, phase angle was significantly higher in those who survived over one year than in those who died within one year, and logistic regression showed phase angle was independently associated with one-year mortality.
02The optimal phase angle cut-off for identifying one-year survival was 2.95°.
03The death group was significantly older and had significantly more malignant tumours than the survival group.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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 analysis included 96 residents from one facility, and the paper states the results cannot be generalised to all geriatric health service residents. The subjects were limited to females, and the paper notes phase angle is generally higher in males, decreases with age, and varies among races. 53 residents were excluded before analysis, and the paper does not state why. The study was observational and measured phase angle and death; it did not test any therapy, so it cannot show that treatment based on phase angle causes a different outcome.
Declared interests
The authors declared no conflicts of interest. The work was supported by JSPS KAKENHI Grant Number JP21K10581.
The easy way to misread this
Do not read the 2.95° phase angle cut-off as a firm rule for all residents. It came from 96 female residents at one facility, and the paper states further studies are needed to support generalization.