Table 4. Initial medication adherence to anti-glaucoma therapy, by patients and first prescription characteristics.
| Initial adherence | Yes | No | Total | a P |
| Total | 2138 (60.3) | 1410 (39.7) | 3548 (100.0) | |
| Gender | 0.533 | |||
| Male | 867 (60.9) | 557 (39.1) | 1424 (40.1) | |
| Female | 1271 (59.8) | 853 (40.2) | 2124 (59.9) | |
| Age group | 0.001 | |||
| 18-44y | 73 (49.3) | 75 (50.7) | 148 (4.2) | |
| 45-64y | 468 (55.0) | 383 (45.0) | 851 (24.0) | |
| 65y or more | 1597 (62.7) | 952 (37.3) | 2549 (71.8) | |
| First prescription drug number | <0.001 | |||
| 1 | 1283 (67.7) | 612 (32.3) | 1895 (53.4) | |
| 2 | 479 (62.5) | 287 (37.5) | 766 (21.6) | |
| 3 or more | 376 (42.4) | 511 (57.6) | 887 (25.0) | |
| Pharmacological class | <0.001 | |||
| S01EA | 33 (68.8) | 15 (31.3) | 48 (1.4) | |
| S01EC | 76 (63.9) | 43 (36.1) | 119 (3.4) | |
| S01ED | 695 (66.4) | 351 (33.6) | 1046 (29.5) | |
| S01EE | 479 (70.2) | 203 (29.8) | 682 (19.2) | |
| Fixed combinations | 855 (51.7) | 798 (48.3) | 1653 (46.6) | |
| Initial drug classification | 0.822 | |||
| Generic drug | 25 (69.4) | 11 (30.6) | 36 (1.9) | |
| Brand name drug | 1258 (67.7) | 601 (32.3) | 1859 (98.1) | |
| Pharmaceutical form of the initial drug | 0.737 | |||
| Dropper bottle | 1193 (67.9) | 564 (32.1) | 1757 (92.7) | |
| Single dose container | 65 (66.3) | 33 (33.7) | 98 (5.2) | |
| Orally | 25 (62.5) | 15 (37.5) | 40 (2.1) |
aChi-square test. S01EA: Sympathomimetics in glaucoma therapy; S01EC: Carbonic anhydrase inhibitors; S01ED: Beta blocking agents; S01EE: Prostaglandin analogues.
n (%)