Table 2.
Chi-Square Analyses Examining Volume of Messages Before and After Stiller’s Announcement.a
| χ2 (df) | P | Before (October 2 and 3) | After (October 4 and 5) | Total | |
|---|---|---|---|---|---|
| Total tweets | – | 252 873 | 292 682 | 525 555 | |
| Cancer site | n (% of time period) | ||||
| Prostate | 13 089.28 (1) | .00 | 3170 (1.3%) | 23 150 (7.9%) | 26 320 |
| Standardized residual | −81.8 | 76 | |||
| Breast | 2056.06 (1) | .00 | 72 536 (28.7%) | 68 191 (23.3%) | 140 727 |
| Standardized residual | 28.6 | −26.6 | |||
| Colorectum | 10.50 (1) | .00 | 1249 (0.5%) | 1271 (0.4%) | 2520 |
| Standardized residual | 2.4 | −2.2 | |||
| Lung | 218.00 (1) | .00 | 3821 (1.5%) | 5981 (2.0%) | 9802 |
| Standardized residual | −10.7 | 10.0 | |||
a In order to control for type I error, the significance value for this set of analyses was set at 0.05 and divided among the tests. As a result, the test-level significance value was P < .02.