Comparison between drug adherence levels obtained by our tool and other measures at the drug level (n=913 drugs)
| Drug adherence levels obtained by our tool | |||||||
|---|---|---|---|---|---|---|---|
| Level 1: high adherence (n=431) | Level 2: good adherence (n=104) | Level 3: moderate adherence (n=153) | Level 4: poor adherence (n=102) | Level 5: very poor adherence (n=79) | Level 6: discontinuation (n=44) | p Value* | |
| Patient-reported ability to take the medication as prescribed (Lu et al)† | 9.9 (0.8) | 9.7 (0.6) | 8.7 (1.6) | 7.9 (2.1) | 6.6 (3.4) | 2.1 (3.8) | <0.01 |
| Adherence Estimator | |||||||
| Patient's evaluation of the medication's importance‡ | 1.3 (0.8) | 1.4 (0.8) | 1.5 (0.8) | 1.4 (0.9) | 2.5 (1.7) | 2.5 (2.0) | <0.01 |
| Patient’s evaluation of the medication's risk/benefit balance‡ | 5.1 (1.5) | 4.8 (1.8) | 4.8 (1.5) | 5.0 (1.4) | 4.5 (1.8) | 4.5 (1.7) | <0.01 |
| Patient’s evaluation of the medication's financial burden‡ | 5.6 (1.2) | 5.4 (1.5) | 5.1 (1.8) | 4.8 (1.8) | 4.9 (1.8) | 4.7 (2.0) | 0.28 |
| Physician’s perception of patient’s ability to take medication as prescribed§ | 8.6 (1.9) | 8.1 (2.1) | 8.8 (1.8) | 7.6 (2.2) | 7.3 (2.6) | 6.3 (3.2) | <0.01 |
Data are mean (SD).
*Each p value refers to the β coefficient in the corresponding linear model.
†Range, 0 (very poor ability) to 10 (excellent ability).
‡Range, 1 (agree) to 6 (completely disagree).
§Range, 0 (very poor ability) to 10 (excellent ability).