Table 3.
A summary of the topics using group 2 tweets (ie, ED-laypeople tweets identified by the developed classifiers).
| Topic category | Population, n | Number of topics under each category | Representative topic themes | Coherence rate, n (%) |
| EDa symptoms | 100 | 10 | Restriction; Appetite suppression; Binge-eating; Purging | 65 (65.0) |
| Education or awareness or treatment | 90 | 9 | ED education; Support group | 76 (84.4) |
| Media or advertising or portrayals | 90 | 9 | Media or advertising | 65 (72.2) |
| ED recovery | 80 | 8 | Passion; Hope; Love | 63 (78.8) |
| Negative consequences | 70 | 7 | Health damage; Social | 44 (62.9) |
| Food and drink | 20 | 2 | Food and drink | 13 (65.0) |
| Social media | 20 | 2 | Twitter; Social media | 11 (55.0) |
| Pro-ana | 20 | 2 | Pro-ana | 16 (80.0) |
| Insults | 20 | 2 | Insults | 18 (90.0) |
| Reflection or planning | 20 | 2 | Reflection or planning | 17 (85.0) |
| Comorbidity | 20 | 2 | Comorbidity | 19 (95.0) |
| Mental illness | 10 | 1 | Mental illness | 9 (90.0) |
| Negative emotions | 10 | 1 | Negative emotions | 8 (80.0) |
| Body image | 10 | 1 | Body image | 8 (80.0) |
| Weight extremes | 10 | 1 | Weight extremes | 5 (50.0) |
| Negative social reactions | 10 | 1 | Negative social reactions | 8 (80.0) |
| Diagnosis | 10 | 1 | Diagnosis | 9 (90.0) |
| Questions or concerns | 10 | 1 | Questions or concerns | 6 (60.0) |
| Random words | 10 | 1 | Anger | 9 (90.0) |
aED: eating disorder.