Thrombosis Research
Volume 125, Issue 6 , Pages 523-528 , June 2010

Effect of prothrombin time outlier exclusion rules on ISI calibration in multicentre studies

  • A.M.H.P. van den Besselaar

      Affiliations

    • Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
    • Corresponding Author InformationCorresponding author. Department of Thrombosis and Hemostasis, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands. Tel.: +31 71 5261894; fax: +31 71 5266755.
    • ,
  • V. Chantarangkul

      Affiliations

    • Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Internal Medicine, University and Foundation IRCCS Ospedale Maggiore Policlinico, Mangiagalli and Regina Elena, Milan, Italy
    • ,
  • A. Tripodi

      Affiliations

    • Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Internal Medicine, University and Foundation IRCCS Ospedale Maggiore Policlinico, Mangiagalli and Regina Elena, Milan, Italy

Received 19 August 2009 ,Revised 11 December 2009 ,Accepted 11 January 2010.

References 

  1. WHO Expert Committee on Biological Standardization. Guidelines for thromboplastins and plasma used to control oral anticoagulant therapy. WHO Techn Rep. 1999;889:64–93
  2. Finney DJ. Calibration guidelines challenge outlier practices. Am Statistician. 2006;60:309–313
  3. Van den Besselaar AMHP, Tripodi A. Effect of daptomycin on prothrombin time and the requirement for outlier exclusion in international sensitivity index calibration of thromboplastin. J Thromb Haemost. 2007;5:1975–1976
  4. Van der Velde EA. Orthogonal regression equation. In:  Van den Besselaar AMHP,  Gralnick HR,  Lewis SM editor. Thromboplastin calibration and oral anticoagulant control. The Hague: Martinus Nijhoff; 1984;p. 25–39
  5. Tomenson JA. A statistician's independent evaluation. In:  Van den Besselaar AMHP,  Gralnick HR,  Lewis SM editor. Thromboplastin calibration and oral anticoagulant control. The Hague: Martinus Nijhoff; 1984;p. 87–108
  6. Van den Besselaar AMHP, Houbouyan LL, Aillaud MF, Denson KWE, Johnston M, Kitchen S, et al. Influence of three types of automated coagulometers on the international sensitivity index (ISI) of rabbit, human, and recombinant human tissue factor preparations. A multicenter study.. Thromb Haemost. 1999;81:66–70
  7. Van den Besselaar AMHP. Multicenter study of replacement of the international reference preparation for thromboplastin, rabbit, plain. Thromb Haemost. 1993;70:794–799
  8. Tripodi A, Chantarangkul V, Negri B, Clerici M, Mannucci PM. International collaborative study for the calibration of a proposed reference preparation for thromboplastin, human recombinant, plain. On behalf of the Subcommittee on Control of Anticoagulation. Thromb Haemost. 1998;79:439–443
  9. Chantarangkul V, van den Besselaar AMHP, Witteveen E, Tripodi A. International collaborative study for the calibration of a proposed international standard for thromboplastin, rabbit, plain. J Thromb Haemost. 2006;4:1339–1345
  10. Hermans J, van den Besselaar , Loeliger EA, van der Velde EAA. collaborative calibration study of reference materials for thromboplastins.. Thromb Haemost. 1983;50:712–717
  11. Thomson JM, Tomenson JA, Poller L. The calibration of the second primary international reference preparation for thromboplastin (Thromboplastin, human, plain, coded BCT/253). Thromb Haemost. 1984;52:336–342
  12. Thomson JM, Darby KV, Poller L. Calibration of BCT/441, the ICSH reference preparation for thromboplastin. Thromb Haemost. 1986;55:379–382
  13. Loeliger EA. Laboratory control, optimal therapeutic ranges and therapeutic quality control in oral anticoagulation. Acta Haemat. 1985;74:125–131
  14. Ansell J, Hirsh J, Hylek E, Jacobson A, Crowther M, Palareti G. Pharmacology and management of the vitamin K antagonists. American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). Chest. 2008;133(6 Suppl):160S–198S

PII: S0049-3848(10)00013-7

doi: 10.1016/j.thromres.2010.01.006

Thrombosis Research
Volume 125, Issue 6 , Pages 523-528 , June 2010

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