Table 1.
Number and Percentage of Websites with Quantitative Information by Audience and Information Type (N = 65)
| Consumer | Healthcare Professional | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Benefit | Risk | Benefit | Risk | ||||||
| Website included | Example | No. | % | No. | % | No. | % | No. | % |
| Quantitative information | 39 | 60.0 | 32 | 49.2 | 62 | 95.4 | 62 | 95.4 | |
| Every benefit/risk | 25 | 38.5 | 2 | 3.1 | 56 | 86.1 | 4 | 6.2 | |
| Some benefits/risks | 14 | 21.5 | 30 | 46.2 | 6 | 9.2 | 58 | 89.2 | |
| Frequency | 10 | 15.4 | 5 | 7.7 | 6 | 9.2 | 16 | 24.6 | |
| 1 out of X format | 1 in 4 participants | 5 | 7.7 | 3 | 4.6 | 1 | 1.5 | 3 | 4.6 |
| N out of X format | 23 out of 100 participants | 6 | 9.2 | 3 | 4.6 | 5 | 7.7 | 15 | 23.1 |
| Probabilities | 37 | 56.9 | 31 | 47.7 | 62 | 95.4 | 61 | 93.8 | |
| Percentages | 23% of participants | 34 | 52.3 | 31 | 47.7 | 62 | 95.4 | 61 | 93.8 |
| Absolute risk reduction | Fewer patients (4% less) | 4 | 6.2 | 0 | 0 | 3 | 4.6 | 1 | 1.5 |
| Relative risk/relative risk reduction |
43% increase in benefit | 19 | 29.2 | 0 | 0 | 37 | 56.9 | 2 | 3.1 |
| Number needed to treat | Need to treat 83 patients to prevent 1event |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Kaplan-Meier curve y-axis | Proportion event-free (0-1) | 0 | 0 | 0 | 0 | 16 | 24.6 | 0 | 0 |
| Mean | An average of 2.5 months | 5 | 7.7 | 0 | 0 | 10 | 15.4 | 3 | 4.6 |
| Median | A median time of 8 months | 13 | 20.0 | 1 | 1.5 | 46 | 70.8 | 7 | 10.8 |
| Ratio (e.g., hazard, odds) | Hazard ratio of 0.90 | 1 | 1.5 | 0 | 0 | 40 | 61.5 | 0 | 0 |
| P-value | P < 0.001 | 1 | 1.5 | 0 | 0 | 40 | 61.5 | 0 | 0 |
| Confidence interval (CI), standard error, or standard deviation |
95% CI: 5.6, 7.1 | 1 | 1.5 | 0 | 0 | 45 | 59.2 | 1 | 1.5 |
| Other quantitative information | 2 cases reported | 4 | 6.2 | 0 | 0 | 0 | 0 | 4 | 6.2 |
| Text descriptors | The majority | 12 | 18.5 | 2 | 3.1 | 19 | 29.2 | 9 | 13.8 |
| Bar graph | 10 | 15.4 | 1 | 1.5 | 44 | 67.7 | 13 | 20.0 | |
| Pie chart | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Line graph | 1 | 1.5 | 0 | 0 | 50 | 76.9 | 4 | 6.2 | |
| Pictograph or icon array | 5 | 7.7 | 0 | 0 | 3 | 4.6 | 1 | 1.5 | |
| Table | 4 | 6.2 | 8 | 12.3 | 22 | 33.8 | 53 | 81.5 | |
| Other graph | 3 | 4.6 | 0 | 0 | 9 | 13.8 | 0 | 0 | |
Note. This table presents whether there was quantitative information about benefits (risks) presented for every benefit (risk) or some of the benefits (risks).