Characteristics of the Asthma UK forum participants as found on the posts
| N | Median (range) | Mean (SD) | |
| Sample characteristics | |||
| Number of unique usernames, names or pseudonyms* (hidden usernames excluded) | 54 | ||
| Adolescents | 39 | ||
| Adolescents talked about by parents | 5 | ||
| Adults with asthma | 10 | ||
| Age | Years | Years | |
| All adolescents | 10 | 16 (13–19) | 16 (2) |
| Adolescent users | 3 | 18 (17–18) | 18 (0.5) |
| Adolescents talked about by parents | 7 | 14 (13–19) | 15 (2) |
| Adults with asthma | 10 | 39 (26–59) | 40 (10) |
| Gender of adolescents | |||
| Male | 13 | ||
| Female | 26 | ||
| Number of posts | |||
| Total number of posts | 136 | ||
| Participants’ identity (N of posts) | |||
| Adolescents | 91 | ||
| Adolescents talked about by parents | 10 | ||
| Adults with asthma | 35 | ||
| Inhaler treatment (N of posts stating type of inhalers used) | |||
| Preventer and reliever inhalers | 87 | ||
| Reliever inhaler | 18 | ||
| No inhalers treatment | 1 | ||
| Not stated | 30 |
*This number does not include participants from the ‘hidden username’ group, which could not be accounted for.