Table 3.
Types of sources referenced by Twitter and Google News HPV vaccination articles.
| Reference sources | Twitter (n=100) | Google News (n=100) | χ2 | df | P value | ||
| Freq. | % | Freq. | % |
|
|
|
|
| CDC | 52 | 52.0 | 41 | 41.0 | 2.432 | 1 | .12 |
| Medical doctors | 49 | 49.0 | 32 | 32.0 | 5.996a | 1 | .01 |
| Political/Government officials | 46 | 46.0 | 32 | 32.0 | 4.119a | 1 | .04 |
| Research community | 37 | 37.0 | 53 | 53.0 | 5.172b | 1 | .02 |
| Personal accounts | 31 | 31.0 | 8 | 8.0 | 16.860a | 1 | <.001 |
| Cancer organizations | 28 | 28.0 | 27 | 27.0 | 0.025 | 1 | .87 |
| Vaccine manufacturer | 8 | 8.0 | 10 | 10.0 | 0.244 | 1 | .62 |
| Other | 4 | 4.0 | 5 | 5.0 | 0.116 | 1 | .73 |
aUsed more frequently by the Twitter articles (P<.05).
bUsed more frequently by the Google News articles (P<.05).