Table 3. Results of ANCOVA models comparing outcomes by whether participant used Solar Cell.
Outcome Measures | Use of Solar Cell* | |||
---|---|---|---|---|
Did Not Use | Used | Test statistic | p-value | |
Sunburn Prevalence in the Past 3 Months | ||||
Sunburned1, 2, 4, 6, 17 (n=219) | 32.3%† | 20.7% | χ2=2.34 | 0.13 |
Number of sunburns1, 3 (n=218) | 0.78§ | 0.43 | F=3.35 | 0.07 |
Time Spent Outdoors in the Sun Between 10 am and 4 pm in the Past 3 Months | ||||
Number of days1, 5, 16 (n=221) | 45.77§ | 41.67 | F=1.60 | 0.21 |
Number of hours1, 3, 5, 16 (n=218) | 135.30§ | 98.66 | F=5.89 | 0.02 |
Sun Protection Practices While Outdoors in the Sun Between 10 am and 4 pm in the Past 3 Months | ||||
Percent of days wearing sunscreen with SPF 15 or greater1, 3, 5, 6, 11, 14 (n=171) | 26.5%§ | 29.9% | F=0.63 | 0.43 |
Percent of days wearing a sunscreen lip balm with SPF 15 or greater1, 5 (n=176) | 17.7%§ | 17.5% | F=0.00 | 0.96 |
Percent of days wearing clothing that protected the skin from the sun1, 5, 9, 17 (n=172) | 18.8%§ | 26.4% | F=2.54 | 0.11 |
Percent of days wearing a hat with a wide brim1, 5, 7, 11, 15, 16 (n=183) | 12.0%§ | 13.0% | F=0.11 | 0.74 |
Percent of days wearing sunglasses1, 10, 15 (n=192) | 62.5%§ | 65.4% | F=0.43 | 0.51 |
Percent of days keeping time in the sun to a minimum1, 5, 7, 17 (n=180) | 49.3%§ | 60.4% | F=4.19 | 0.04 |
Percent of days staying in the shade1, 5, 9, 15, 17 (n=170) | 40.2%§ | 40.2% | F=0.00 | 0.99 |
Mean percent of days using all sun protection practices1, 5, 7, 17 (n=202) | 33.8%§ | 39.4% | F=4.07 | 0.04 |
Use was defined as running Solar Cell and receiving the feedback screen at least once.
Actual means
Least square means
Covariates controlled in the models:
Baseline value;
Age;
Education;
Race/Ethnicity;
Gender;
Skin score (Phenotypic Index);
Skin cancer;
Household head;
Household size;
Housing type;
Income;
Marital status;
MSA status;
Ownership status of living quarters;
Kids under 18;
Employment status; and
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