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Number of users, threads, and posts on a social network and a health forum analyzed in this study.
| Characteristics | Health forum (cancerdusein.org) | Social network (Facebook groups) |
| Date | October 2010-October 2014 | October 2010-October 2014 |
| No. of users | 675 | 1394 |
| No. of discussion threads | 1050 | 11,013 |
| No. of messages | 16,868 | 70,092 |
