Table 2. Event count per 1000 person-years (pyrs) and incidence rate (IR) per 1000 person-years for long COVID.
| Cohort | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Primary | Pre-vaccination | Post-vaccination | Post-COVID diagnosis | ||||||
| Characteristic | Count/1000 pyrs | IR | Count/1000 pyrs | IR | Count | IR | Count/1000 pyrs | IR | |
| All | 36 886/38 520.8 | 1.0 | 7155/23 609.2 | 0.3 | 17 376/11 142.9 | 1.6 | 29 268/2293.2 | 12.8 | |
| Age, years | 18–39 | 12 031/13 368.9 | 0.9 | 3405/9659.6.6 | 0.4 | 4446/2366.3.3 | 1.9 | 9181/1000.5 | 9.2 |
| 40–59 | 18 661/13 287.1 | 1.4 | 3092/7882.5.5 | 0.4 | 9218/3917.5.5 | 2.4 | 14 886/876.1 | 17.0 | |
| 60–79 | 5713/9611.4.4 | 0.6 | 616/4946.9.9 | 0.1 | 3371/3 805.5.5 | 0.9 | 4794/334.4 | 14.3 | |
| 80–105 | 481/2253.5.5 | 0.2 | 42/1120.2.2 | 0.0 | 341/1053.6.6 | 0.3 | 407/82.1 | 5.0 | |
| Sex | Male | 13 569/19 209.6 | 0.7 | 2803/12 151.4 | 0.2 | 6440/5263.6.6 | 1.2 | 10 836/1047.4 | 10.3 |
| Female | 23 317/19 311.3 | 1.2 | 4352/11 457.8 | 0.4 | 10 936/5879.4.4 | 1.9 | 18 432/1245.8 | 14.8 | |
| BMI | Not obese | 24 736/29 616.8 | 0.8 | 5203/18 604.8 | 0.3 | 11 685/8179.8.8 | 1.4 | 19 045/1694.2 | 11.2 |
| Obese i (30–34.9 kg/m²) | 6881/5570.8.8 | 1.2 | 1138/3146.3.3 | 0.4 | 3235/1832.8.8 | 1.8 | 5679/354.3 | 16.0 | |
| Obese ii (35–39.9 kg/m²) | 3083/2116.4.4 | 1.5 | 497/1187.6.6 | 0.4 | 1437/702.7 | 2.0 | 2627/149.9 | 17.5 | |
| Obese iii (≥40 kg/m²) | 2186/1216.8.8 | 1.8 | 317/670.6 | 0.5 | 1019/427.7 | 2.4 | 1917/94.7 | 20.2 | |
| Ethnicity | White | 24,553/24,226.3 | 1.0 | 4,363/14,430.7 | 0.3 | 12,385/7,682.1.1 | 1.6 | 20,045/1,436.2 | 14.0 |
| Asian or Asian British | 2172/2279.4.4 | 1.0 | 598/1519.2.2 | 0.4 | 612/525.8 | 1.2 | 1795/190.3 | 9.4 | |
| Black or Black British | 544/746.1 | 0.7 | 244/545.4 | 0.4 | 138/140.7 | 1.0 | 428/48.2 | 8.9 | |
| Chinese or other ethnic group | 289/600.6 | 0.5 | 87/461.8 | 0.2 | 107/104.1 | 1.0 | 222/23.4 | 9.5 | |
| Mixed | 345/379.4 | 0.9 | 133/274.7 | 0.5 | 105/75.6 | 1.4 | 276/25.6 | 10.8 | |
| Missing | 8983/10 289.0 | 0.9 | 1730/6377.4.4 | 0.3 | 4029/2614.6.6 | 1.5 | 6502/569.4 | 11.4 | |
| Region | East | 6476/8897.2.2 | 0.7 | 1225/5428.5.5 | 0.2 | 3061/2600.3.3 | 1.2 | 4744/499.2 | 9.5 |
| East Midlands | 5100/6671.6.6 | 0.8 | 1048/4035.3.3 | 0.3 | 1928/1959.6.6 | 1.0 | 4066/425.2 | 9.6 | |
| London | 1500/2566.1.1 | 0.6 | 476/1854.5.5 | 0.3 | 486/512.7 | 0.9 | 974/131.9 | 7.4 | |
| North East | 3484/1848.2.2 | 1.9 | 495/1111.4.4 | 0.4 | 1858/542.7 | 3.4 | 3067/137.0 | 22.4 | |
| North West | 4329/3438.5.5 | 1.3 | 704/2037.2.2 | 0.3 | 2269/1035.1.1 | 2.2 | 3451/251.9 | 13.7 | |
| South East | 2824/2598.3.3 | 1.1 | 763/1581.8.8 | 0.5 | 1051/772.5 | 1.4 | 2308/123.1 | 18.7 | |
| South West | 5329/5355.4.4 | 1.0 | 879/3138.3.3 | 0.3 | 3150/1718.2.2 | 1.8 | 4244/227.8 | 18.6 | |
| West Midlands | 1223/1561.0.0 | 0.8 | 329/1011.7.7 | 0.3 | 454/392.3 | 1.2 | 909/110.9 | 8.2 | |
| Yorkshire and The Humber | 6621/5584.6.6 | 1.2 | 1236/3410.5.5 | 0.4 | 3119/1609.5.5 | 1.9 | 5505/386.3 | 14.3 | |
| Index of Multiple Deprivation | 1 (most deprived) | 6529/7318.8.8 | 0.9 | 1656/4828.4.4 | 0.3 | 2392/1753.7.7 | 1.4 | 5254/509.3 | 10.3 |
| 2 | 6964/7503.8.8 | 0.9 | 1450/4745.7.7 | 0.3 | 3011/2013.6.6 | 1.5 | 5522/466.5 | 11.8 | |
| 3 | 7430/8054.1.1 | 0.9 | 1449/4890.9.9 | 0.3 | 3429/2375.3.3 | 1.4 | 5877/448.6 | 13.1 | |
| 4 | 8185/7853.4.4 | 1.0 | 1371/4 641.4.4 | 0.3 | 4255/2442.7.7 | 1.7 | 6357/431.9 | 14.7 | |
| 5 (least deprived) | 7135/7150.1.1 | 1.0 | 1108/4112.1.1 | 0.3 | 3907/2333.9.9 | 1.7 | 5629/385.5 | 14.6 | |
| Missing | 643/640.6 | 1.0 | 121/390.7 | 0.3 | 382/223.7 | 1.7 | 629/51.4 | 12.2 | |
BMI = body mass index. IR = incidence rate. Pyrs = person-years