Number of users and posts retrieved from selected online health forums from 1 January 2020 to 31 May 2020
| Website | Number of users* | Number of posts | Number (%) of posts mentioning COVID-19 |
| HealthUnlocked (www.healthunlocked.com) | 47 999 | 718 103 | 34 657 (4.8) |
| HealthBoards (www.healthboards.com) | 601 | 3477 | 127 (3.7) |
| Inspire (www.inspire.com) | 4534 | 17 854 | 797 (4.5) |
| Total | 53 134 | 739 434 | 35 581 (4.8) |
*A user is defined as anyone who posted within the data collection period.