Table 1.
Number and proportions of participants with COVID-19 and long COVID by country.
| Country | Participants (% a) | COVID-19 Infection (% b) | Long COVID (% c) |
|---|---|---|---|
| Total sample | 1649 (100.0) | 310 (18.8) | 87 (28.1) |
| Norway | 242 (14.7) | 13 (5.4) | 7 (53.8) |
| UK | 255 (15.5) | 74 (29.0) | 29 (40.3) |
| USA | 915 (55.5) | 220 (24.0) | 49 (22.8) |
| Australia | 237 (14.4) | 3 (1.3) | 2 (66.7) |
| p d | <0.001 | 0.002 |
a Percentage of all study participants. b Percentage of participants within country. c Percentage of participants within country who have had COVID-19 infection. d Chi-square tests. Significance values indicate the probability of proportions between countries being equal.