Evidence map›Paper›PMID 19137410›Full record

ArticleInternational urology and nephrology2009

Performance of the Cockcroft-Gault and MDRD equations in adult Nigerians with chronic kidney disease.

Emmanuel I Agaba, Chinyere M Wigwe, Patricia A Agaba, Antonios H Tzamaloukas

Abstract readComparative Study
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In one paragraph

Article in International urology and nephrology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
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7citing papers in PubMed, 1 pooled it
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Emmanuel I AgabaDepartment of Medicine, Nephrology Division, Jos University Teaching Hospital, Plateau State, Nigeria. eiagaba@yahoo.com
Chinyere M Wigwe
Patricia A Agaba
Antonios H Tzamaloukas

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEstimation of the glomerular filtration rate (GFR) is required in the assessment of patients with chronic kidney disease (CKD) in order to provide information regarding the functional status of the kidneys. Current guidelines advocate the use of prediction equations, such as the Cockcroft-Gault (CG) formula and the Modification of Diet in Renal Disease (MDRD) study-derived equations, over clearance of endogenous creatinine (Ccr) in achieving this aim. We were interested in knowing the accuracy of these equations in predicting the GFR in adult Nigerians with CKD.

methodsWe conducted a review of records of patients who were evaluated for CKD at the Nephrology Clinic of the Jos University Teaching Hospital between 2001 and 2003. We compared the CG and MDRD equations against the Ccr in predicting the GFR in 130 patients (88 males and 42 females) with CKD.

resultsThe means +/- standard deviation (SD) for the measured and predicted GFR by the CG and MDRD equations were similar (17.6 +/- 25.8 ml/min, 19.9 +/- 24.0 ml/min and 21.5 +/- 28.2 ml/min, respectively; analysis of variance [ANOVA], F = 0.68, P = 0.5). The mean difference between CG and Ccr was -2.2 +/- 14.8 ml/min, with discordance at Ccr values >25 ml/min. The mean difference between MDRD and Ccr was -3.9 +/- 18.1 ml/min, with discordance at Ccr values >40 ml/min.

conclusionThe CG and MDRD equations provide reliable alternatives to measured Ccr in the estimation of the GFR in Nigerian patients with CKD.

Indexed as

AdultChronic DiseaseCreatinineFemaleGlomerular Filtration RateHumansKidney DiseasesMaleMathematicsNigeriaCreatinine

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