TY - JOUR
T1 - A meta-analysis of the association of estimated GFR, albuminuria, age, race, and sex with acute kidney injury
AU - Grams, Morgan E.
AU - Sang, Yingying
AU - Ballew, Shoshana H.
AU - Gansevoort, Ron T.
AU - Kimm, Heejin
AU - Kovesdy, Csaba P.
AU - Naimark, David
AU - Oien, Cecilia
AU - Smith, David H.
AU - Coresh, Josef
AU - Sarnak, Mark J.
AU - Stengel, Benedicte
AU - Tonelli, Marcello
N1 - Publisher Copyright:
© 2015 National Kidney Foundation, Inc.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Background Acute kidney injury (AKI) is a serious global public health problem. We aimed to quantify the risk of AKI associated with estimated glomerular filtration rate (eGFR), albuminuria (albumin-creatinine ratio [ACR]), age, sex, and race (African American and white). Study Design Collaborative meta-analysis. Setting & Population 8 general-population cohorts (1,285,049 participants) and 5 chronic kidney disease (CKD) cohorts (79,519 participants). Selection Criteria for Studies Available eGFR, ACR, and 50 or more AKI events. Predictors Age, sex, race, eGFR, urine ACR, and interactions. Outcome Hospitalized with or for AKI, using Cox proportional hazards models to estimate HRs of AKI and random-effects meta-analysis to pool results. Results 16,480 (1.3%) general-population cohort participants had AKI over a mean follow-up of 4 years; 2,087 (2.6%) CKD participants had AKI over a mean follow-up of 1 year. Lower eGFR and higher ACR were strongly associated with AKI. Compared with eGFR of 80 mL/min/1.73 m2, the adjusted HR of AKI at eGFR of 45 mL/min/1.73 m2 was 3.35 (95% CI, 2.75-4.07). Compared with ACR of 5 mg/g, the risk of AKI at ACR of 300 mg/g was 2.73 (95% CI, 2.18-3.43). Older age was associated with higher risk of AKI, but this effect was attenuated with lower eGFR or higher ACR. Male sex was associated with higher risk of AKI, with a slight attenuation in lower eGFR but not in higher ACR. African Americans had higher AKI risk at higher levels of eGFR and most levels of ACR. Limitations Only 2 general-population cohorts could contribute to analyses by race; AKI identified by diagnostic code. Conclusions Reduced eGFR and increased ACR are consistent strong risk factors for AKI, whereas associations of AKI with age, sex, and race may be weaker in more advanced stages of CKD.
AB - Background Acute kidney injury (AKI) is a serious global public health problem. We aimed to quantify the risk of AKI associated with estimated glomerular filtration rate (eGFR), albuminuria (albumin-creatinine ratio [ACR]), age, sex, and race (African American and white). Study Design Collaborative meta-analysis. Setting & Population 8 general-population cohorts (1,285,049 participants) and 5 chronic kidney disease (CKD) cohorts (79,519 participants). Selection Criteria for Studies Available eGFR, ACR, and 50 or more AKI events. Predictors Age, sex, race, eGFR, urine ACR, and interactions. Outcome Hospitalized with or for AKI, using Cox proportional hazards models to estimate HRs of AKI and random-effects meta-analysis to pool results. Results 16,480 (1.3%) general-population cohort participants had AKI over a mean follow-up of 4 years; 2,087 (2.6%) CKD participants had AKI over a mean follow-up of 1 year. Lower eGFR and higher ACR were strongly associated with AKI. Compared with eGFR of 80 mL/min/1.73 m2, the adjusted HR of AKI at eGFR of 45 mL/min/1.73 m2 was 3.35 (95% CI, 2.75-4.07). Compared with ACR of 5 mg/g, the risk of AKI at ACR of 300 mg/g was 2.73 (95% CI, 2.18-3.43). Older age was associated with higher risk of AKI, but this effect was attenuated with lower eGFR or higher ACR. Male sex was associated with higher risk of AKI, with a slight attenuation in lower eGFR but not in higher ACR. African Americans had higher AKI risk at higher levels of eGFR and most levels of ACR. Limitations Only 2 general-population cohorts could contribute to analyses by race; AKI identified by diagnostic code. Conclusions Reduced eGFR and increased ACR are consistent strong risk factors for AKI, whereas associations of AKI with age, sex, and race may be weaker in more advanced stages of CKD.
KW - Chronic Kidney Disease Prognosis Consortium
KW - Estimated glomerular filtration rate (EGFR)
KW - acute kidney injury (AKI)
KW - acute renal failure (ARF)
KW - age
KW - albumin-creatinine ratio (ACR)
KW - albuminuria
KW - meta-analysis
KW - proteinuria
KW - race/ethnicity
KW - renal function
KW - sex
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U2 - 10.1053/j.ajkd.2015.02.337
DO - 10.1053/j.ajkd.2015.02.337
M3 - Article
C2 - 25943717
AN - SCOPUS:84942237928
SN - 0272-6386
VL - 66
SP - 591
EP - 601
JO - American Journal of Kidney Diseases
JF - American Journal of Kidney Diseases
IS - 4
ER -