Total prescribing by NMIPs during the whole study period, and in 2011–2012, 2019–2020 and 2020–2021 according to LHB
| Total n (%) | 2011–2012 n (%) | 2019–2020 n (%) | 2020–2021 n (%) | 2020 mid-year population n (%) | |
| Wales | 11 221 122 (100) | 417 348 (100) | 2 103 637 (100) | 2 214 211 (100) | 3 169 586 (100) |
| AB | 2 080 391 (19) | 57 985 (14) | 406 461 (19) | 492 472 (22) | 598 194 (19) |
| BC | 3 633 565 (32) | 123 253 (30) | 663 733 (32) | 675 107 (30) | 703 361 (22) |
| CV | 1 431 904 (13) | 96 398 (23) | 232 040 (11) | 337 484 (15) | 504 497 (16) |
| CTM* | 776 162 (7) | 36 229 (9) | 146 266 (7) | 134 557 (6) | 449 836 (14) |
| HD | 1 634 835 (15) | 53 232 (13) | 393 483 (19) | 254 026 (11) | 389 719 (12) |
| Pow | 663 344 (6) | 4405 (1) | 134 943 (6) | 168 304 (8) | 133 030 (4) |
| SB* | 1 000 921 (9) | 45 846 (11) | 126 711 (6) | 152 261 (7) | 390 949 (12) |
Items prescribed in 2020–2021 correlated with mid-year health board population estimates (r2=0.66, p<0.05, Pearson correlation analysis).
* The structure of these health boards changed in April 2019 as noted in the methods section
AB, Aneurin Bevan University Health Board; BC, Betsi Cadwaladr University Health Board; CTM, Cwn Taf Morgannwg University Health Board; CV, Cardiff and Vale University Health Board; HD, Hywel Dda University Health Board; LHBs, local health boards; NMIPs, non-medical independent prescribers; Pow, Powys Teaching Health Board; SB, Swansea Bay University Health Board.