The BNF chapters accounting for approximately 80% of prescribed items in the financial years 2011–2012 and 2020–2021 nationally in Wales, and in each of the seven LHBs
| Wales | AB | BC | CV | CTM* | HD | Pow | SB* | |||||||||
| 11–12 | 20–21 | 11–12 | 20–21 | 11–12 | 20–21 | 11–12 | 20–21 | 11–12 | 20–21 | 11–12 | 20–21 | 11–12 | 20–21 | 11–12 | 20–21 | |
| CVS | 49 384 12% | 507 641 23% | 6983 12% | 132 354 27% | 10 020 8% | 138 249 20% | 13 963 14% | 84 075 25% | 5612 15% | 24 448 18% | 5487 10% | 53 404 21% | – | 40 817 24% | 7280 16% | 34 294 23% |
| NS | 49 104 12% | 409 931 19% | 7122 12% | 97 035 20% | 13 434 11% | 113 594 17% | 10 895 11% | 59 655 18% | 5872 16% | 23 904 18% | 6182 12% | 46 327 18% | – | 33 690 20% | 5415 12% | 35 726 23% |
| Infection | 73 092 18% | 174 815 8% | 10 749 19% | 33 538 7% | 25 266 20% | 70 662 10% | 11 367 12% | – | 5165 14% | 11 580 9% | 11 673 22% | 23 709 9% | 1055 24% | – | 7817 17% | 8457 6% |
| Respiratory | 54 597 13% | 178 724 8% | 6132 11% | 35 485 7% | 15 691 13% | 56 809 8% | 16 051 17% | 25 117 7% | 3939 11% | 15 573 12% | 6749 13% | 20 671 8% | 762 17% | 13 385 8% | 5273 12% | 11 684 8% |
| Endocrine | 27 124 6% | 198 763 9% | 4078 7% | 41 112 8% | – | 65 064 10% | 8229 9% | 31 379 9% | 2664 7% | 12 187 9% | – | 20 985 8% | 250 6% | 14 706 9% | 2264 5% | 13 330 9% |
| GI | – | 191 470 9% | – | 42 239 9% | – | 57 418 9% | – | 27 273 8% | 2394 7% | 11 247 8% | 2880 5% | 22 960 9% | – | 16 992 10% | – | 13 341 9% |
| Skin | 37 858 9% | – | 5182 9% | – | 11 787 10% | – | 7414 8% | – | 2705 7% | – | 5327 10% | – | 722 16% | – | 4721 10% | – |
| Other | 30 062 7% | – | 4582 8% | – | 10 577 9% | – | 6684 7% | – | – | – | 3473 7% | – | 529 12% | – | 2562 6% | – |
| Genitourinary | – | – | – | – | 8557 7% | – | – | – | – | – | – | – | – | – | – | – |
| Nutrition blood | – | – | – | – | – | – | – | 20 765 6% | – | – | – | – | – | 9698 6% | – | – |
| Total items | 417 348 | 2 214 211 | 57 985 | 492 472 | 123 253 | 675 107 | 96 398 | 337 484 | 36 229 | 134 557 | 53 232 | 254 026 | 4405 | 168 304 | 45 846 | 152 261 |
Top three chapters in each financial year highlighted (green=first, orange=second, blue=third).
*The organisational structure of CTM and SB health boards changed in April 2019, therefore, the quantity of items prescribed in the financial years shown is not necessarily comparable.
AB, Aneurin Bevan University Health Board; BC, Betsi Cadwaladr University Health Board; BNF, British National Formulary; CTM, Cwn Taf Morgannwg University Health Board; CV, Cardiff and Vale University Health Board; CVS, cardiovascular system; GI, gastrointestinal; HD, Hywel Dda University Health Board; LHBs, local health boards; NS, nervous system; Pow, Powys Teaching Health Board; SB, Swansea Bay University Health Board.