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A multicentre randomised clinical endpoint study of parma 5 computer‐assisted oral anticoagulant dosage
Author(s) -
Poller Leon,
Keown Michelle,
Ibrahim Saied,
Lowe Gordon,
Moia Marco,
Turpie Alexander G.,
Roberts Christopher,
Van Den Besselaar Aton M. H. P.,
Van Der Meer Felix J. M.,
Tripodi Armando,
Palareti Gualtiero,
Jespersen Jørgen
Publication year - 2008
Publication title -
british journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.907
H-Index - 186
eISSN - 1365-2141
pISSN - 0007-1048
DOI - 10.1111/j.1365-2141.2008.07337.x
Subject(s) - medicine , deep vein , oral anticoagulant , thrombosis , clinical trial , pulmonary embolism , clinical endpoint , emergency medicine , surgery , warfarin , atrial fibrillation
Summary To meet growing demand for oral anticoagulation worldwide there has been increased dependence on computer‐assistance in dosage although the safety and effectiveness of any of the individual computer‐assisted dosage programs has not previously been established. This randomised multicentre clinical end‐point study assessed a new version of the parma 5 program. It compared parma 5 safety and effectiveness with manual dosage by experienced medical staff at 19 centres with a known interest in oral anticoagulation. Target recruitment was 8000 patient‐years, randomised to medical staff or parma ‐5 assisted dosage. Safety and effectiveness of the parma 5 program was compared with manual dosage. A total of 10 421 patients were recruited (15 369 patient‐years) in the 5‐year study. International normalised ratio (INR) tests numbered 167 791 with manual and 160 078 with parma 5 dosage. With parma 5 there was overall a non‐significant reduction in clinical events but in the 2542 patients with deep vein thrombosis/pulmonary embolism, clinical events were significantly reduced ( P = 0·005). Success in achieving ‘time in target INR range’ was also significantly greater with parma 5 compared with the dosage by experienced medical staff. This study demonstrated the safety and effectiveness of parma 5‐assisted dosage.