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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Comparison of international normalized ratio audit parameters in patients enrolled in GARFIELD-AF and treated with vitamin K antagonists
British Journal of Haematology, Volume 174, No. 4, Year 2016
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Description
Vitamin K antagonist (VKA) therapy for stroke prevention in atrial fibrillation (AF) requires monitoring of the international normalized ratio (INR). We evaluated the agreement between two INR audit parameters, frequency in range (FIR) and proportion of time in the therapeutic range (TTR), using data from a global population of patients with newly diagnosed non-valvular AF, the Global Anticoagulant Registry in the FIELD–Atrial Fibrillation (GARFIELD-AF). Among 17 168 patients with 1-year follow-up data available at the time of the analysis, 8445 received VKA therapy (±antiplatelet therapy) at enrolment, and of these patients, 5066 with =3 INR readings and for whom both FIR and TTR could be calculated were included in the analysis. In total, 70 905 INRs were analysed. At the patient level, TTR showed higher values than FIR (mean, 56·0% vs 49·8%; median, 59·7% vs 50·0%). Although patient-level FIR and TTR values were highly correlated (Pearson correlation coefficient [95% confidence interval; CI], 0·860 [0·852–0·867]), estimates from individuals showed widespread disagreement and variability (Lin's concordance coefficient [95% CI], 0·829 [0·821–0·837]). The difference between FIR and TTR explained 17·4% of the total variability of measurements. These results suggest that FIR and TTR are not equivalent and cannot be used interchangeably. © 2016 John Wiley & Sons Ltd
Authors & Co-Authors
Fitzmaurice, David Andrew
United Kingdom, Birmingham
University of Birmingham, College of Medical and Dental Sciences
Accetta, Gabriele
United Kingdom, London
Thrombosis Research Institute
Haas, Sylvia K.
Germany, Munich
Technische Universität München
Kayani, Gloria
United Kingdom, London
Thrombosis Research Institute
Misselwitz, Frank
Germany, Berlin
Bayer Pharma ag
Pieper, Karen S.
United States, Durham
Duke Clinical Research Institute
Ten Cate, Hugo
Netherlands, Maastricht
Maastricht Universitair Medisch Centrum+
Turpie, Alexander G.G.
Canada, Hamilton
Mcmaster University
Kakkar, Ajay K.
United Kingdom, London
Thrombosis Research Institute
United Kingdom, London
University College London
Bassand, Jean Pierre L.
Unknown Affiliation
Camm, Alan John
Unknown Affiliation
Goldhaber, Samuel Zachary
Unknown Affiliation
Goto, Shinya
Unknown Affiliation
Mantovani, Lorenzo G.
Unknown Affiliation
van Eickels, Martin
Unknown Affiliation
Verheugt, Freek W.Aa
Unknown Affiliation
Fox, Keith A.A.
Unknown Affiliation
Gersh, Bernard John
Unknown Affiliation
Gibbs, Harry H.
Unknown Affiliation
Brodmann, Marianne
Unknown Affiliation
Cools, Frank Johan C.
Unknown Affiliation
Barretto, Antoniò Carlos Pereira
Unknown Affiliation
Connolly, Stuart J.
Unknown Affiliation
Spyropoulos, Alex C.
Unknown Affiliation
Eikelboom, John W.
Unknown Affiliation
Corbalàn, Ramõn L.
Unknown Affiliation
Hu, Dayi
Unknown Affiliation
Janský, Petr
Unknown Affiliation
Nielsen, Jørn Dalsgaard
Unknown Affiliation
Ragy, Hany Ibrahim
Unknown Affiliation
Raatikainen, Pekka
Unknown Affiliation
Le-Heuzey, Jean Yves F.
Unknown Affiliation
Darius, Harald
Unknown Affiliation
Keltai, Mátyás
Unknown Affiliation
Kakkar, Sanjay
Unknown Affiliation
Sawhney, Jitendra Pal Singh
Unknown Affiliation
Agnelli, Giancarlo
Unknown Affiliation
Koretsune, Yukihiro
Unknown Affiliation
Díaz, Carlos Jerjes Sánchez Jesus Jaime Illescas
Unknown Affiliation
Atar, Dan
Unknown Affiliation
Stȩpiñska, Janina
Unknown Affiliation
Panchenko, Elizaveta P.
Unknown Affiliation
Lim, Toon Wei
Unknown Affiliation
Jacobson, Barry Frank
Unknown Affiliation
Oh, Seil
Unknown Affiliation
Viñolas, Xavier
Unknown Affiliation
Rosenqvist, Mårten
Unknown Affiliation
Steffel, Jan
Unknown Affiliation
Angchaisuksiri, Pantep
Unknown Affiliation
Oto, Ali
Unknown Affiliation
Parkhomenko, Alexander N.
Unknown Affiliation
Al-Mahmeed, Wael Abdulrahman R.
Unknown Affiliation
Hu, Dayi
Unknown Affiliation
Chen, K. N.
Unknown Affiliation
Zhao, Yusheng
Unknown Affiliation
Zhang, Huaiqin
Unknown Affiliation
Cao, Shiping
Unknown Affiliation
Wang, Daowen
Unknown Affiliation
Yang, Yuejin
Unknown Affiliation
Li, Weihua
Unknown Affiliation
Yin, Yuehui
Unknown Affiliation
Tao, Guizhou
Unknown Affiliation
Yang, Ping
Unknown Affiliation
Chen, Yingmin
Unknown Affiliation
He, Shenghu
Unknown Affiliation
Fu, Guosheng
Unknown Affiliation
Li, Xin
Unknown Affiliation
Wu, Tongguo
Unknown Affiliation
Cheng, Xiaoshu
Unknown Affiliation
Yan, Xiaowei
Unknown Affiliation
Zhao, Ruiping
Unknown Affiliation
Chen, Moshui
Unknown Affiliation
Xiong, Longgen
Unknown Affiliation
Chen, Posheng
Unknown Affiliation
Jiao, Yang
Unknown Affiliation
Guo, Ying
Unknown Affiliation
Xue, Li
Unknown Affiliation
Wang, F. Z.
Unknown Affiliation
Yang, Zhiming
Unknown Affiliation
Bai, C. L.
Unknown Affiliation
Chen, Xinyue
Unknown Affiliation
Feng, Shaodan
Unknown Affiliation
Fu, Q. H.
Unknown Affiliation
Gao, X. J.
Unknown Affiliation
Guo, W. N.
Unknown Affiliation
He, Ronghua
Unknown Affiliation
He, X. A.
Unknown Affiliation
Hu, X. S.
Unknown Affiliation
Huang, X. F.
Unknown Affiliation
Li, Jennifer S.
Unknown Affiliation
Li, Lei
Unknown Affiliation
Li, Ya Huei
Unknown Affiliation
Liu, Tingting
Unknown Affiliation
Liu, Wenling
Unknown Affiliation
Liu, Yanyun
Unknown Affiliation
Lu, Z. C.
Unknown Affiliation
Jadhav, P.
Unknown Affiliation
Durgaprasad, Rajashekhar
Unknown Affiliation
Ravi Shankar, A. G.
Unknown Affiliation
Rajput, Rajeeve Kumar
Unknown Affiliation
Bhargava, Kartikeya
Unknown Affiliation
Sarma, R.
Unknown Affiliation
Srinivas, Arun
Unknown Affiliation
Roy, Debabrata
Unknown Affiliation
Nagamalesh, Udigala Madappa
Unknown Affiliation
Chopda, Manoj
Unknown Affiliation
Kishore, Ravi
Unknown Affiliation
Kulkarni, Govind
Unknown Affiliation
Chandwani, Prakash
Unknown Affiliation
Pothiwala, Rasesh Atulbhai
Unknown Affiliation
Padinhare Purayil, M.
Unknown Affiliation
Shah, Sahrish H.
Unknown Affiliation
Vijan, Vinod Madan
Unknown Affiliation
Bantwal, Ganapathi
Unknown Affiliation
Sharma, Mukul K.
Unknown Affiliation
Higa, Satoshi
Unknown Affiliation
Watanabe, Hiroshi
Unknown Affiliation
Matsushita, Kunihiro
Unknown Affiliation
Lim, Wendy T.
Unknown Affiliation
Choi, Dong‑Ju
Unknown Affiliation
Cho, Myeong-chan
Unknown Affiliation
Nam, Gi-byoung
Unknown Affiliation
On, Young-keun
Unknown Affiliation
Lim, Hongeuy
Unknown Affiliation
Kim, Kee-sik
Unknown Affiliation
Kim, Chongjin
Unknown Affiliation
Phrommintikul, A.
Unknown Affiliation
Sawanyawisuth, Kittisak
Unknown Affiliation
Yilmaz, Mehmet Bertan
Unknown Affiliation
Öngen, Zeki
Unknown Affiliation
Yorgun, Hikmet
Unknown Affiliation
Ersanlı, Murat Kazım
Unknown Affiliation
Caliskan, S.
Unknown Affiliation
Yetis Sayin, Begüm
Unknown Affiliation
Vensentini, Natalia
Unknown Affiliation
Ingaramo, Adrián C.
Unknown Affiliation
Ahuad-Guerrero, Rodolfo Andres
Unknown Affiliation
Zapata, Gerardo O.
Unknown Affiliation
Dran, Ricardo Dario
Unknown Affiliation
Fernández, Alberto Alfredo
Unknown Affiliation
Cartasegna, Luis Rodolfo
Unknown Affiliation
Berli, M. A.
Unknown Affiliation
Gomez Vilamajó, Oscar Alberto
Unknown Affiliation
Costabel, Juan Pablo
Unknown Affiliation
Costamagna, Osvaldo J.A.
Unknown Affiliation
Gurfinkel, Enrique P.
Unknown Affiliation
Hrabar, Adrián D.
Unknown Affiliation
Maffei, Laura Elena
Unknown Affiliation
Novas, V.
Unknown Affiliation
Rodríguez, Manuel A.
Unknown Affiliation
Schygiel, Pablo Omar
Unknown Affiliation
Faria-Neto, José Rocha
Unknown Affiliation
Lópes, Renato Deláscio
Unknown Affiliation
Reis, Gilmar
Unknown Affiliation
Fonseca, Cândida
Unknown Affiliation
Lopes, Demetrius Klee
Unknown Affiliation
Santos, I. S.
Unknown Affiliation
Santos, Marlene S.
Unknown Affiliation
Lanas, Fernando T.
Unknown Affiliation
Jerjes-Sanchez, Carlos D.
Unknown Affiliation
Cardona-Muñoz, Ernesto Germán
Unknown Affiliation
Leiva-Pons, José Luís
Unknown Affiliation
Chuquiure-Valenzuela, Eduardo J.J.R.
Unknown Affiliation
Drexel, Heinz
Unknown Affiliation
Podczeck-Schweighofer, Andrea
Unknown Affiliation
Huber, Kurt H.
Unknown Affiliation
Lang, Wielfried
Unknown Affiliation
Pichler, Martin
Unknown Affiliation
Strohmer, Bernhard
Unknown Affiliation
Said, Ahmad
Unknown Affiliation
Vogel, Birgit
Unknown Affiliation
Mairesse, Georges H.
Unknown Affiliation
Heyse, Alex M.
Unknown Affiliation
Statistics
Citations: 13
Authors: 173
Affiliations: 9
Identifiers
Doi:
10.1111/bjh.14084
ISSN:
00071048
Research Areas
Health System And Policy
Noncommunicable Diseases
Study Design
Cross Sectional Study
Cohort Study