Comparison between WHO/Pan America Health Organization (PAHO) and Centers for Disease Control and Prevention (CDC) press releases
| WHO/PAHO (n=27) | CDC (n=27) | p-value | Test | |
| % | % | |||
| Content assessment | ||||
| Title | 100.0 | 100.0 | – | – |
| Current details or new information about outbreak | 96.3 | 85.2 | 0.351 | Fisher's |
| Reference to consultation | 96.3 | 88.9 | 0.610 | Fisher's |
| Signed release | 51.9 | 0 | <0.0001 | Pearson's |
| Contact details | 40.7 | 100.0 | <0.0001 | Pearson's |
| Link to other resources | 66.7 | 92.6 | 0.018 | Pearson's |
| Expresses uncertainty | 88.9 | 96.3 | 0.610 | Fisher's |
| Segmentation in release | 66.7 | 77.8 | 0.362 | Pearson's |
| Risk-advisory guidance | 11.1 | 66.7 | <0.0001 | Pearson's |
| Use of figures/graphs | 33.3 | 0 | 0.002 | Fisher's |
| Witte's Extended Parallel Process Model | ||||
| Self-efficacy | 55.6 | 77.8 | 0.083 | Pearson's |
| Response efficacy | 51.9 | 77.8 | 0.046 | Pearson's |
| Susceptibility | 92.6 | 85.2 | 0.669 | Fisher's |
| Severity | 96.3 | 92.6 | 1 | Fisher's |
| Witte efficacy construct | 51.9 | 77.8 | 0.046 | Pearson |
| Witte threat construct | 88.9 | 85.2 | 1 | Fisher's |
| All Witte constructs present | 51.9 | 77.8 | 0.046 | Pearson's |
| Readability | ||||
| Flesch-Kincaid grade level (mean±SD) | 17.06±2.95 | 12.40±3.33 | <0.0001 | Analysis of variance |
| Flesch-Kincaid reading ease (mean±SD) | 21.15±9.72 | 41.07±13.26 | <0.0001 | Analysis of variance |
| Word count (mean±SD) | 681±218.21 | 502±160.24 | 0.001 | Analysis of variance |