From: Differences in the quality of oral anticoagulation therapy with vitamin K antagonists in German GP practices – results of the cluster-randomized PICANT trial (Primary Care Management for Optimized Antithrombotic Treatment)
Range
Patients
(n = 688)
1.5–1.8
1
1.8–2.3
1.8–2.9
1.8–3
2–3
657
2–3.5
2
2–4
10
2.5–3.5
11
2.5–4
3
3–4