Volumes of screening mammographic examinations in the OBSP after service was resumed and the framework was released (June 2020 to March 2021) and during the total pandemic period (March 2020 to March 2021), by risk group
| Risk group | No. (%) of screening mammographic examinations | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Service resumption and release of framework during the pandemic | Total* n = 426 967 | ||||||||||
| June 2020 n = 5005 | July 2020 n = 28 904 | Aug. 2020 n = 37 392 | Sept. 2020 n = 45 556 | Oct. 2020 n = 47 390 | Nov. 2020 n = 48 120 | Dec. 2020 n = 39 096 | Jan. 2021 n = 39 025 | Feb. 2021 n = 43 021 | Mar. 2021 n = 61 050 | ||
| High Risk OBSP | |||||||||||
| Initial screens and rescreens (priority II) | 472 (9.4) | 1294 (4.5) | 1325 (3.5) | 1519 (3.3) | 1412 (3.0) | 1487 (3.1) | 1334 (3.4) | 1273 (3.3) | 1186 (2.8) | 1272 (2.1) | 13 256 (3.1) |
| OBSP (average risk) | |||||||||||
| Initial screens (priority IIIa) | 621 (12.4) | 4218 14.6) | 5655 (15.1) | 6948 (15.3) | 7522 (15.9) | 7877 (16.4) | 6677 (17.1) | 8063 (20.7) | 8831 (20.5) | 9903 (16.2) | 71 834 16.8) |
| Annual rescreens (priority IIIb) | 1234 (24.7) | 7095 (24.5) | 9028 (24.1) | 10 156 (22.3) | 9774 (20.6) | 10 354 (21.5) | 8151 (20.8) | 7545 (19.3) | 9543 (22.2) | 20 328 (33.3) | 99 599 (23.3) |
| Biennial rescreens (priority IIIc) | 2678 (53.5) | 16 297 (56.4) | 21 384 (57.2) | 26 933 (59.1) | 28 682 (60.5) | 28 402 (59.0) | 22 934 (58.7) | 22 144 (56.7) | 23 461 (54.5) | 29 547 (48.4) | 242 278 56.7) |
Note: OBSP = Ontario Breast Screening Program.
↵* The total pandemic period included in this study (March 2020 to March 2021).