Table 5.
All participants’ responses (mean, SD), according to verbal and numerical format vs. numerical alone
| Format | anova F‐value (P) | |||||
|---|---|---|---|---|---|---|
| Combined verbal and numerical expression | Numerical term only | Relative risk estimate increase: verbal + numerical > numerical only | ||||
| M (SD) | n | M (SD) | n | |||
| Side‐effect risk estimates (actual %) | ||||||
| Chance of aching joints & muscles (60%) | 23.1 (25.4) | 135 | 13.2 (15.7) | 135 | +75.0% | 14.90 (<0.001) |
| Chance of severe anaemia (6%) | 14.7 (17.0) | 145 | 11.2 (10.7) | 138 | +31.2% | 4.17 (0.042) |
| Chance of serious allergic reaction (0.1–1%) | 4.2 (9.5) | 144 | 2.3 (8.3) | 142 | +82.6% | 3.04 (0.082) |
| Chance of itching (0.01–0.1%) | 5.2 (15.4) | 143 | 1.6 (8.6) | 133 | +225% | 5.74 (0.017) |
| Chance of dizziness or fits (<0.01%) | 3.3 (11.4) | 139 | 1.4 (9.6) | 131 | +135.7% | 2.14 (0.149) |
| Chance of ANY side‐effect | 31.1 (30.6) | 137 | 18.7 (19.4) | 132 | +66.3% | 15.48 (<0.001) |
| Likert scale items | ||||||
| Satisfaction with side‐effect information | 4.4 (1.3) | 159 | 4.3 (1.4) | 155 | 1.49 (0.22) | |
| How bad overall are Taxol side‐effects | 3.4 (1.0) | 159 | 3.4 (1.1) | 156 | 0.24 (0.88) | |
| Likelihood of having a side‐effect | 3.8 (1.4) | 159 | 3.4 (1.4) | 155 | 5.74 (0.017) | |
| General risk to health from Taxol | 3.2 (1.0) | 158 | 3.1 (1.0) | 156 | 0.91 (0.34) | |
| Impact of information on decision to take Taxol | 2.7 (1.5) | 158 | 2.8 (1.5) | 155 | 0.49 (0.48) | |
Bold text indicates statistical significance (p <.05).