Table 1.
Schedule of measures.
| Measure | Day 0: baseline | Days 0-7: observe | Days 8-17: daily text messages | Day 18: structured goal setting | Days 18-28: daily text messages | |
| Self-report | ||||||
|
|
Demographics | ✓ |
|
|
|
|
|
|
Sunburn in last 28 days | ✓ |
|
|
|
|
|
|
Confidence and anxiety | ✓ | Da7 | D16 |
|
D28 |
|
|
Daily sunburn or sun protection |
|
✓ | ✓ | ✓ | ✓ |
|
|
Structured goal |
|
|
|
✓ |
|
|
|
System Usability Scale |
|
|
|
|
✓ |
|
|
Willingness to continue use |
|
|
|
|
✓ |
| Sensor | ||||||
|
|
Daily UV | ✓ | ✓ | ✓ | ✓ | ✓ |
| Intervention | ||||||
|
|
Daily text messages |
|
|
✓ | ✓ | ✓ |
|
|
UV exposure visualization | ✓ | ✓ | ✓ | ✓ | |
aD: day.