From: There are considerable drawbacks to oral anticoagulant for monitoring patients at home which should lead family physicians to discuss alternative or enhanced solutions: a cross-sectional study
Total INRs recorded
INR rate 2-3
INR rate <2
INR rate >3
INR 3–4.5
INR rate outside therapeutic range
1224
58.5%
15.7%
25.8%
9%
32.5% (estimated)