Complexity | Adjusted IRR (95% CI) | P-value | |
---|---|---|---|
Prescription group (ref category: 0) | |||
1–4 | 4.6410 | 4.4487 to 4.8415 | <0.001 |
5–9 | 8.5436 | 8.1874 to 8.9153 | <0.001 |
≥10 | 17.6362 | 16.8924 to 18.4128 | <0.001 |
Frailty category (reference category: fit) | |||
Mild | 1.2190 | 1.2019 to 1.2364 | <0.001 |
Moderate | 1.5105 | 1.4870 to 1.5344 | <0.001 |
Severe | 2.1117 | 2.0762 to 2.1479 | <0.001 |
IMD quintile of deprivation (reference category: 3 – median quintile) | |||
1 (most deprived) | 1.0114 | 0.9983 to 1.0246 | 0.0183 |
2 | 0.9847 | 0.9722 to 0.9974 | 0.0906 |
4 | 0.9594 | 0.9458 to 0.9732 | <0.001 |
5 (least deprived) | 0.9390 | 0.9242 to 0.9541 | <0.001 |
Week of 2020 (reference category: week 8) | |||
9 | 1.0554 | 1.0247 to 1.0870 | <0.001 |
10 | 1.0825 | 1.0514 to 1.1146 | <0.001 |
11 | 1.2436 | 1.2094 to 1.2787 | <0.001 |
12 | 2.1799 | 2.1258 to 2.2353 | <0.001 |
13 | 2.2385 | 2.1829 to 2.2955 | <0.001 |
14 | 2.0995 | 2.0467 to 2.1535 | <0.001 |
15 | 1.9480 | 1.8986 to 1.9987 | <0.001 |
16 | 1.9377 | 1.8883 to 1.9884 | <0.001 |
17 | 2.2430 | 2.1876 to 2.2998 | <0.001 |
18 | 2.3624 | 2.3044 to 2.4219 | <0.001 |
19 | 2.0899 | 2.0384 to 2.1428 | <0.001 |
IMD = Index of Multiple Deprivation.12 IRR = incidence rate ratio.