Numbers of antibiotic (AB) prescriptions, and AB prescribing rates, by year. Figures are frequencies except where indicated.
| 2014 | 2015 | 2016 | 2017 | |
| General practices | 102 | 102 | 102 | 102 |
| Patients | 1 025 539 | 1 058 805 | 1 069 513 | 1 071 293 |
| Female (%) | 520 336 (50.7) | 536 082 (50.6) | 542 051 (50.7) | 543 324 (50.7) |
| Age (mean, SD, years) | 39.4 (23.4) | 39.5 (23.4) | 39.7 (23.5) | 39.9 (23.5) |
| Person-time (person-years) | 887 580 | 921 735 | 932 544 | 939 620 |
| All AB prescriptions | 539 219 | 494 185 | 482 917 | 459 476 |
| All AB prescribing rate (per 1000 person-years) | 608 | 536 | 518 | 489 |
| Proportion of patients prescribed AB (%) | 25.3 | 23.0 | 22.2 | 21.1 |
| Mean number of AB prescriptions in patients receiving prescriptions | 2.08 | 2.03 | 2.03 | 2.03 |
| Broad-spectrum β-lactam AB prescriptions | 195 750 | 174 353 | 167 056 | 153 423 |
| Broad-spectrum β-lactam AB prescribing rate (per 1000 person-years) | 221 | 189 | 179 | 163 |
| Proportion of patients prescribed broad-spectrum β-lactam AB (%) | 12.9 | 11.3 | 10.7 | 9.9 |
| Mean number of broad-spectrum β-lactam AB prescriptions in patients prescribed | 1.48 | 1.46 | 1.45 | 1.45 |