Table 4a
Internal consistency of SEPI part I, in terms of Cronbach's alpha, displayed for the full score, and with deletion of each of the ingoing questions.
Australian population Swedish population
(Cronbach’s alpha) (Cronbach’s alpha)
Students Patients Total Students Patients Total
Value for SEPI as a whole 0.66 0.43 0.69 0.63 0.50 0.61
Value after deletion of single questions, as follows:
1. Intentional tanning 0.62 0.41 0.65 0.53 0.39 0.50
2. Occasions with sunburn 0.63 0.43 0.66 0.62 0.47 0.57
3. Duration of stay in the sun 0.61 0.37 0.64 0.55 0.41 0.54
4. Vacational sun exposure 0.61 0.50 0.65 0.62 0.48 0.59
5. Sunscreen use 0.67 0.53 0.71 0.69 0.65 0.73
6. Clothes for sun protection 0.64 0.29 0.67 0.58 0.39 0.54
7. Hat or cap for sun protection 0.67 0.29 0.67 0.63 0.48 0.60
8. Seeking the shade 0.60 0.25 0.64 0.54 0.34 0.4