Predictors of anticoagulation quality in 15 834 patients performing patient self-management of oral anticoagulation with vitamin K antagonists in real-life practice: a survey of the International Self-Monitoring Association of Orally Anticoagulated Patients.

Schaefer, Christian; Wuillemin, Walter A; Kessels, Alfons; Jacobson, Alan; Nagler, Michael (2016). Predictors of anticoagulation quality in 15 834 patients performing patient self-management of oral anticoagulation with vitamin K antagonists in real-life practice: a survey of the International Self-Monitoring Association of Orally Anticoagulated Patients. British journal of haematology, 175(4), pp. 677-685. Wiley-Blackwell 10.1111/bjh.14273

[img] Text
MN_Predictors of anticoagulation quality _British_Journal_of_Haematology.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (206kB) | Request a copy

Although patient self-management (PSM) of oral anticoagulation with vitamin K antagonists is recommended for patients requiring long-term anticoagulation, important aspects are still unclear. Using data from a large international survey (n = 15 834; median age 72 years; 30·1% female), we studied predictors of poor anticoagulation control (percentage of International Normalized Ratio values within therapeutic range below 75%) and developed a simple prediction model. The following variables were identified as risk factors for poor anticoagulation control and included in the final model: higher intensity of therapeutic range (odds ratio [OR] on every level 1·9; 95% confidence interval [CI] 1·8-2·0), long intervals between measurements (>14 d; 1·5; 95% CI 1·3-1·7), female sex (OR 1·3; 95% CI 1·2-1·4), and management other than PSM (OR 1·4; 95% CI 1·2-1·6). At a threshold of 0·2 (at least one variable present), the model predicted poor anticoagulation control with a sensitivity of 85·3% (95% CI: 84·0, 86·4) and a specificity of 28·5% (27·6, 29·5). The area under the receiver operated characteristic curve was 0·65. Using the proposed prediction model, physicians will be able to identify patients with a low chance of performing well, considering additional training, regular follow-up, or adjustment of therapeutic ranges.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Haematology and Central Haematological Laboratory
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Hämatologie (Erwachsene)

UniBE Contributor:

Nagler, Michael

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0007-1048

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Katrin Kölliker-Schütz

Date Deposited:

20 Feb 2017 16:04

Last Modified:

20 Feb 2017 16:04

Publisher DOI:

10.1111/bjh.14273

PubMed ID:

27468696

Uncontrolled Keywords:

International Normalized Ratio; anticoagulant administration/dosage; drug monitoring; self care; vitamin K antagonists/inhibitors

BORIS DOI:

10.7892/boris.92545

URI:

https://boris.unibe.ch/id/eprint/92545

Actions (login required)

Edit item Edit item
Provide Feedback