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Czasopismo
2012 | 49 | 1 | 45-56
Tytuł artykułu

Comparison of clinical data based on limits of agreement

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Two different medical measurement methods, which usually do not produce exactly the same results, are used to analyse the serum levels of folic acid in a blood sample. We assess the (dis)agreement of the available data in order to replace the old method (the reference method, which involves a lot of human intervention) with the new one (which uses mostly machines), without causing problems in clinical interpretation. The 95% limits of agreement are estimated, before and after a logarithmic transformation, and an appropriate use of regression and a nonparametric approach are also considered. The application of these different statistical techniques is very useful and easily interpreted by medical researchers, but the results obtained do not provide confidence that the new method can be used in place of the old one for clinical purposes.
Wydawca
Czasopismo
Rocznik
Tom
49
Numer
1
Strony
45-56
Opis fizyczny
Daty
wydano
2012-06-01
online
2013-08-17
Twórcy
  • Unidade Departamental de Matemática, Instituto Politécnico de Tomar, Estrada da Serra - Quinta do Contador, 2300-313 Tomar, Portugal, lgrilo@ipt.pt
  • Unidade Departamental de Matemática, Instituto Politécnico de Tomar, Estrada da Serra - Quinta do Contador, 2300-313 Tomar, Portugal, helenagrilo@ipt.pt
Bibliografia
  • Altman D., Bland J. (1983): Measurement in medicine: the analysis of method comparison studies. Statistician 32: 307-17.
  • Bland J., Altman D. (2007): Agreement Between Methods of Measurement with Multiple Observations Per Individual. Journal of Biopharmaceutical Statistics 17: 571-582.[WoS]
  • Bland J., Altman D. (2003): Applying the Right Statistics: Analyses of Measurement Studies. Ultrasound in Obstetrics and Gynecology 22: 85-93.
  • Bland J., Altman D. (1999): Measuring agreement in method comparison Studies. Statistical Methods in Medical Research 8: 135-160.
  • Bland J., Altman D. (1986): Statistical methods for assessing agreement between two methods of clinical measurement. The Lancet: 307-310.[PubMed]
  • Carstensen B., Simpson J., Gurrin L. (2008): Statistical Models for Assessing Agreement in Method Comparison Studies with Replicate Measurements. The International Journal of Biostatistics 4(1): Article 16.[Crossref]
  • Choudhary P.K., Tony-NG H.K. (2006): Assessment of Agreement under Nonstandard Conditions Using Regression Models for Mean and Variance. Biometrics 62: 288-296.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.doi-10_2478_bile-2013-0003
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