Table 2 Patients’ safety-relevant knowledge of OAT: Proportion of patients giving correct answers (at a single-item level)a
Item no. | Item | Intervention group | Control group | ||||
|---|---|---|---|---|---|---|---|
Baseline | After 12 mo. | After 24 mo. | Baseline | After 12 mo. | After 24 mo. | ||
1 | Indication for oral anticoagulation | 60.0% | 61.3% | 60.8% | 60.9% | 57.3% | 55.7% |
2 | Awareness of risk treated with OAT | 67.7% | 67.9% | 65.4% | 70.6% | 67.4% | 64.9% |
3 | Duration of treatment known | 70.7% | 74.9% | 76.8% | 68.7% | 69.1% | 68.6% |
4 | Checking frequencies known | 37.8% | 46.5% | 44.0% | 36.7% | 42.4% | 41.2% |
5 | Target INR range known | 37.8% | 59.5% | 56.9% | 36.1% | 45.5% | 43.7% |
6 | Foods which contain a large amount of vitamin K | 29.0% | 34.1% | 31.6% | 30.2% | 29.2% | 25.3% |
7 | Diet-related recommendations | 70.7% | 68.2% | 69.3% | 65.5% | 67.4% | 66.8% |
8 | Safest analgesic that is available without a prescription | 11.0% | 25.1% | 26.8% | 12.7% | 15.4% | 13.8% |
9 | What to do after missing medication dose | 19.5% | 28.6% | 30.1% | 16.4% | 19.9% | 16.3% |
10 | Awareness that underdosing results in no symptoms | 14.5% | 15.6% | 15.7% | 13.7% | 14.6% | 10.2% |
11 | Interactions with OAT | 20.0% | 26.9% | 28.3% | 19.4% | 22.8% | 20.3% |
12 | Recognition of emergencies (doctor’s visit necessary) | 6.3% | 22.5% | 16.3% | 6.7% | 5.9% | 6.8% |
13 | Knowing when it is important to inform others of OAT | 26.0% | 35.0% | 30.4% | 27.8% | 23.9% | 19.1% |