Demographic characteristics of diagnosed SARS-CoV-2 cases in the first three COVID-19 waves in Scotland
| Risk group | First wave: 2 March 2020–5 July 2020 | Second wave: 6 July 2020–4 April 2021 | Third wave: 5 April 2021–8 August 2021 | ||||||||||||
| Cases | ICU patients* | HDU patients* | Deaths | CFR | Cases | ICU patients* | HDU patients* | Deaths | CFR | Cases | ICU patients* | HDU patients* | Deaths | CFR | |
| n (%) | n (%) | n (%) | n (%) | (%) | n (%) | n (%) | n (%) | n (%) | (%) | n (%) | n (%) | n (%) | n (%) | (%) | |
| Sex | |||||||||||||||
| Female | 11 254 (62.2) | 143 (28.2) | 120 (33.6) | 1211 (47.5) | 10.8 | 106 580 (54) | 472 (36.4) | 578 (38) | 2467 (48.1) | 2.3 | 65 447 (48.6) | 99 (34.1) | 109 (37.8) | 160 (40.2) | 0.2 |
| Male | 6844 (37.8) | 364 (71.8) | 237 (66.4) | 1337 (52.5) | 19.5 | 90 671 (46) | 824 (63.6) | 944 (62) | 2666 (51.9) | 2.9 | 69 107 (51.4) | 191 (65.9) | 179 (62.2) | 238 (59.8) | 0.3 |
| Total | 18 099 (100) | 507 (100) | 357 (100) | 2548 (100) | 14.1 | 197 251 (100) | 1296 (100) | 1522 (100) | 5133 (100) | 2.6 | 134 554 (100) | 290 (100) | 288 (100) | 398 (100) | 0.3% |
| Age groups | |||||||||||||||
| 00–19 | 347 (1.9) | NA | NA | 0 (0) | 0.0 | 29 593 (15) | NA | NA | 3 (0.1) | 0.0 | 37 479 (27.9) | NA | NA | 1 (0.3) | 0.0 |
| 20–39 | 3828 (21.2) | 32 (6.3) | 33 (9.2) | 7 (0.3) | 0.2 | 70 273 (35.6) | 93 (7.2) | 109 (7.2) | 26 (0.5) | 0.0 | 58 687 (43.6) | 80 (27.6) | 85 (29.5) | 14 (3.5) | 0.0 |
| 40–59 | 5797 (32.0) | 205 (40.4) | 137 (38.4) | 131 (5.1) | 2.3 | 60 541 (30.7) | 498 (38.4) | 547 (35.9) | 331 (6.4) | 0.5 | 29 155 (21.7) | 128 (44.1) | 118 (41.0) | 53 (13.3) | 0.2 |
| 60–79 | 3944 (21.8) | 263 (51.9) | 163 (45.7) | 857 (33.6) | 21.7 | 26 642 (13.5) | 671 (51.8) | 758 (49.8) | 1883 (36.7) | 7.1 | 7926 (5.9) | 79 (27.2) | 81 (28.1) | 163 (41.0) | 2.1 |
| 80+ | 4183 (23.1) | 7 (1.4) | 24 (6.7) | 1553 (60.9) | 37.1 | 10 202 (5.2) | 34 (2.6) | 108 (7.1) | 2890 (56.3) | 28.3 | 1302 (1) | 3 (1.0) | 4 (1.4) | 167 (42.0) | 12.8 |
| Total | 18 099 (100) | 507 (100) | 357 (100) | 2548 (100) | 14.1 | 197 251 (100) | 1296 (100) | 1522 (100) | 5133 (100) | 2.6 | 134 554 (100) | 290 (100) | 288 (100) | 398 (100) | 0.3 |
| SIMD quintile† | |||||||||||||||
| 1 | 4333 (23.9) | 120 (23.7) | 120 (33.6) | 637 (25.0) | 14.7 | 54 080 (27.4) | 368 (28.4) | 565 (37.1) | 1509 (29.4) | 2.8 | 31 896 (23.7) | 90 (31.0) | 111 (38.5) | 123 (30.9) | 0.4 |
| 2 | 4056 (22.4) | 121 (23.9) | 83 (23.2) | 570 (22.4) | 14.1 | 43 860 (22.2) | 294 (22.7) | 349 (22.9) | 1164 (22.7) | 2.7 | 27 456 (20.4) | 65 (22.4) | 51 (17.7) | 84 (21.1) | 0.3 |
| 3 | 3423 (18.9) | 97 (19.1) | 57 (16.0) | 508 (19.9) | 14.8 | 33 885 (17.2) | 232 (17.9) | 236 (15.5) | 904 (17.6) | 2.7 | 23 664 (17.6) | 41 (14.1) | 38 (13.2) | 75 (18.8) | 0.3 |
| 4 | 3205 (17.7) | 83 (16.4) | 55 (15.4) | 447 (17.5) | 13.9 | 33 095 (16.8) | 176 (13.6) | 194 (12.7) | 848 (16.5) | 2.6 | 24 518 (18.2) | 52 (17.9) | 45 (15.6) | 54 (13.6) | 0.2 |
| 5 | 3053 (16.9) | 86 (17.0) | 42 (11.8) | 381 (15.0) | 12.5 | 31 618 (16) | 152 (11.7) | 137 (9.0) | 699 (13.6) | 2.2 | 26 144 (19.4) | 23 (7.9) | 24 (8.3) | 61 (15.3) | 0.2 |
| Unknown | 29 (0.2) | – | – | 5 (0.2) | 17.2 | 713 (0.4) | 74 (5.7) | 41 (2.7) | 9 (0.2) | 1.3 | 876 (0.7) | 19 (6.6) | 19 (6.6) | 1 (0.3) | 0.1 |
| Total | 18 099 (100) | 507 (100) | 357 (100) | 2548 (100) | 14.1 | 197 251 (100) | 1296 (100) | 1522 (100) | 5133 (100) | 2.6 | 134 554 (100) | 290 (100) | 288 (100) | 398 (100) | 0.3 |
*SICSAG is a dynamic 'live' database. The data contained in this report may change if local clinicians subsequently amend data within locally held databases. SICSAG data are available for those aged 20 years or older. COVID-19-related ICU admissions have been identified as the following: A patient who has tested positive for COVID-19 at any time in the 21 days prior to admission to ICU, or who have tested positive from the data of admission up to and including the date of ICU discharge. A single patient may be admitted multiple times: (A) There were 546 ICU admissions in wave 1, 1434 in wave 2 and 314 in wave 3. (B) For HDU admissions, there were 399 in wave 1, 1736 in wave 2 and 309 in wave 3.
†SIMD level 1 is the most deprived quintile, SIMD level 5 is the least deprived quintile.
CFR, case fatality rate; HDU, high-dependency unit; ICU, intensive care unit; NA, not available; SICSAG, Scottish Intensive Care Society Audit Group; SIMD, Scottish Index of Multiple Deprivation.