Does the mean outpatient serum creatinine measured within a year of hospitalization accurately estimate baseline kidney function in hospitalized patients with impaired kidney function?
Mean outpatient serum creatinine from the prior year serves as the most accurate proxy for baseline kidney function in hospitalized patients with renal impairment.
The mean outpatient serum creatinine measured within a year of hospitalization most closely approximates nephrologist-adjudicated serum creatinine values.
Siew et al. (2012) studied this question.