Table 3.
Cross-tabulation of topics across post types (N=36,424)a.
| Topic number and label | Self-composed posts (n=15,151), n (%) | Quote posts with comments (n=2693), n (%) | Replies (n=18,580), n (%) | Total in topic (N=36,424), n (%) |
| Topic 1: HIV and COVID-19 | 12,933 (85.36) | 2616 (97.14) | 18,129 (97.57) | 33,678 (92.46) |
| Topic 2: mRNAb HIV vaccine trials | 2001 (13.21) | 52 (1.93) | 98 (0.53) | 2151 (5.91) |
| Topic 3: HIV vaccine and immunity | 217 (1.43) | 25 (0.93) | 353 (1.9) | 595 (1.63) |
| Total in post type (N=36,424) | 15,151 (41.6) | 2693 (7.39) | 18,580 (51.01) | 36,424 (100) |
aN=36,424, χ24=2511.4, P<.001.
bmRNA: messenger RNA.