Table 2 Symptoms duration among self-reported COVID-19 cases in the longitudinal studies.
From: Long COVID burden and risk factors in 10 UK longitudinal studies and electronic health records
Study | COVID-19 cases with symptom duration data | Mean age | Duration of symptoms, N (%) | ||
|---|---|---|---|---|---|
Acute (0–4 weeks) | Ongoing symptomatic COVID-19 (4–12 weeks) | Post COVID-19 syndrome (12+ weeks) | |||
Studies ascertaining long COVID of any severity | |||||
ALSPAC G1 | 668 | 28.4 | 519 (77.7) | 97 (14.5) | 52 (7.8) |
USoc | 1033 | 48.5 | 742 (71.8) | 182 (17.6) | 109 (10.6) |
TwinsUK | 806 | 52.7 | 579 (71.8) | 146 (18.1) | 81 (10) |
GS | 335 | 55.9 | 224 (66.9) | 54 (16.1) | 57 (17.0) |
ALSPAC G0 | 446 | 58.3 | 302 (67.7) | 68 (15.2) | 76 (17.0) |
Studies ascertaining severe long COVID onlya | |||||
MCS | 1055 | 19.9 | 1010 (95.7) | 32 (3.0) | 13 (1.2) |
Next Steps | 848 | 31.0 | 773 (91.2) | 51 (6.0) | 24 (2.8) |
BCS70 | 889 | 51.0 | 757 (85.2) | 84 (9.5) | 48 (5.4) |
NCDS | 709 | 63.0 | 578 (81.5) | 97 (13.7) | 34 (4.8) |
Studies ascertaining long COVID by monthly symptom reportingb | |||||
BiB | 110 | 40.7 | 40 (36.4) | 25 (22.7) | 45 (40.9) |
TwinsUK | 953 | 54 | 272 (28.5) | 246 (25.8) | 435 (45.6) |
