Medical College of Wisconsin
CTSICores SearchResearch InformaticsREDCap

Patient Satisfaction With Extended International Normalized Ratio Follow-up Intervals in a Veteran Population. Ann Pharmacother 2020 05;54(5):442-449

Date

11/23/2019

Pubmed ID

31752504

Pubmed Central ID

PMC7745188

DOI

10.1177/1060028019889414

Scopus ID

2-s2.0-85075416774

Abstract

Background: For highly stable warfarin patients, limited data exists regarding patient satisfaction on extended international normalized ratio (INR) follow-up intervals and how this population compares with patients on a direct oral anticoagulant (DOAC). Objective: To assess the impact on patient satisfaction of extending INR follow-up intervals. Methods: Veterans on stable warfarin doses had extended INR follow-up intervals up to 12 weeks in a single-arm prospective cohort study for 2 years. This analysis included participants who completed at least 2 Duke Anticoagulation Satisfaction Scales (DASS). The primary outcome was the change in the DASS. A focus group described participant experiences. Participant satisfaction was compared to patients on a DOAC. Results: Of the 51 participants, 48 were included in the warfarin extended INR follow-up group. Compared with baseline, the mean DASS score (42.9 ± 12.08) was worse at 24 months (46.82 ± 15.2, P = 0.0266), with a small effect size (Cohen's d = 0.29). The 8 participants in the focus group were satisfied with the extended INR follow-up interval but would be uncomfortable extending follow-up past 2 to 3 months. The extended INR follow-up interval study had similar DASS scores as the 33 participants included on DOAC therapy (46.8 ± 15.1, P = 0.9970) but may be limited by differing populations using DOACs. Conclusion and Relevance: For patients currently stable on warfarin therapy, extending the INR follow-up interval up to 12 weeks or changing to a DOAC does not appear to improve patient satisfaction.

Author List

Schoen RR, Nagy MW, Porter AL, Margolis AR

Author

Michael W. Nagy PharmD Assistant Professor in the School of Pharmacy Administration department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Adult
Aged
Anticoagulants
Blood Coagulation
Cohort Studies
Drug Monitoring
Female
Follow-Up Studies
Humans
International Normalized Ratio
Male
Middle Aged
Patient Satisfaction
Prospective Studies
Time Factors
Veterans
Warfarin