BMC Geriatrics
Kidney test mismatch linked to death risk in older adults
Low versus preserved kidney function on a second test was linked to higher death risk, with hazard ratios of 1.44 and 1.62.Low versus preserved kidney function on a second test was linked to higher death risk, with hazard ratios of 1.44 and 1.62.

Cohort · 8,384 peopleBiomarkers
Who was studied8,384 older adults with preserved creatinine-based kidney function
What changedDeath risk was higher with low cystatin C-based kidney function than with preserved function (hazard ratios 1.44 and 1.62)
The catchBaseline physical-function differences could partly explain the higher death risk