Table 2. Comparative Results for Primary and Secondary Outcomes Across Follow-up.
| Outcome | Comparison Typea | Estimate (95% CI) | P Value |
|---|---|---|---|
| Coprimary outcomes | |||
| Consultation rate per person per year | Adjusted risk ratio | 0.96 (0.56 to 1.66) | .89 |
| Patient interval, d | Adjusted mean difference | −20.2 (−90.4 to 50.0) | NAb |
| Secondary outcomes with validated scales | |||
| Skin self-examination benefits score | Adjusted mean difference | 0.08 (−0.83 to 1.00) | .86 |
| Skin self-examination barriers score | Adjusted mean difference | −0.29 (−1.83 to 1.25) | .71 |
| Self-efficacy for consulting without delay | Adjusted mean difference | 0.20 (−3.69 to 4.10) | .92 |
| Perceived risk of getting melanoma “higher” or “much higher” than other people | Descriptive results onlyc | NA | NA |
| Perceived lifetime risk of melanoma | Descriptive results onlyc | NA | NA |
| Sun protection habits score | Adjusted mean difference | 0.12 (−0.01 to 0.24) | .07 |
| Additional secondary outcomes | |||
| “Often” or “always” practiced sun protection in the past year | Descriptive results onlyc | NA | NA |
| “Extremely likely” or “likely” to practice sun protection in the coming year | Descriptive results onlyc | NA | NA |
| Sunburned at least once in the last year | Descriptive results onlyc | NA | NA |
| Measures of possible harm | |||
| Melanoma Worry Scale | Adjusted mean difference | −0.12 (−0.56 to 0.31) | .58 |
| Short Form Health Survey, physical component summary | Adjusted mean difference | −0.31 (−2.39 to 1.76) | .77 |
| Short Form Health Survey, mental component summary | Adjusted mean difference | 1.28 (−0.34 to 2.90) | .12 |
| HADS Depression score | Adjusted mean difference | −0.43 (−1.19 to 0.33) | .26 |
| HADS Anxiety score | Adjusted mean difference | 0.11 (−0.67 to 0.90) | .78 |
Abbreviations: HADS, Hospital Anxiety and Depression Scale; NA, not applicable.
a
All comparisons were intervention vs control.
b
No formal statistical testing for the patient interval outcome was performed because of differences in the rates of missing data between the control and intervention groups.
c
Because of small numbers of participants who provided data for this outcome, only descriptive results were calculated.