Percentage of residents with polypharmacy derived from 233 138 biweekly assessment data points between January 2019 to September 2022
| N (%) | What was included in the polypharmacy calculation? | ||
| Medicines and non-medicinal products | Any medicines | Regular medicines | |
| No look-back period | |||
| Prescribed | 129 445 (55.5) | 116 361 (49.9) | 102 950 (44.2) |
| Administered | 103 422 (44.4) | 91 301 (39.2) | 79 034 (33.9) |
| Difference | 26 023 (11.1) | 25 060 (10.7) | 23 916 (10.3) |
| 1-week look-back period | |||
| Prescribed | 140 120 (60.1) | 127 171 (54.6) | 111 216 (47.7) |
| Administered | 129 213 (55.4) | 115 847 (49.7) | 100 171 (43.0) |
| Difference | 10 907 (4.7) | 11 324 (4.9) | 11 045 (4.7) |
| 2-week look-back period | |||
| Prescribed | 143 371 (61.5) | 130 671 (56.1) | 113 020 (48.5) |
| Administered | 135 168 (58.0) | 121 871 (52.3) | 104 517 (44.8) |
| Difference | 8203 (3.5) | 8800 (3.8) | 8503 (3.7) |
| 4-week look-back period | |||
| Prescribed | 148 124 (63.5) | 135 684 (58.2) | 115 963 (49.7) |
| Administered | 141 631 (60.8) | 128 498 (55.1) | 109 016 (46.7) |
| Difference | 6493 (2.7) | 7186 (3.1) | 6947 (3.0) |