Table 3.
Adherence to IOP-Lowering Medications (Proportion of Days Covered)
| Number of users | 73,256 | |
| Mean PDC (SD) | 0.72 (0.29) | |
| Median PDC [IQR] | 0.81 [0.49-1.00] | |
| Percent Adherence (PDC) | Number of Users | Percentage |
| ≥ 0.80 | 37,261 | 50.9 |
| 0.60-0.79 | 11,526 | 15.7 |
| 0.40-0.59 | 10,769 | 14.7 |
| 0.20-0.39 | 9,350 | 12.8 |
| < 0.20 | 4,350 | 5.9 |
| PDC by Class | Number of Users | Percent Adherent |
| Alpha agonists | 4,604 | 38.9 |
| Beta blockers, ophthalmic | 16,218 | 45.5 |
| Carbonic anhydrase inhibitors | 1,982 | 53.4 |
| Combination drugs | 3,156 | 41.1 |
| Miotics | 539 | 32.3 |
| Multiple products | 8,220 | 65.2 |
| Prostaglandin analogs | 38,535 | 52.4 |
| Other | 2 | 100.0 |
| PDC by User | Number of Users | Percent Adherent |
| New user | 22,369 | 33.4 |
| Continuing user | 50,887 | 58.5 |
IOP = intraocular pressure; IQR = interquartile range; PDC = proportion of days covered; SD = standard deviation.