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Table 1 Text messages and relevant CSM dimensions

From: Sun protection education for adolescents: a feasibility study of a wait-list controlled trial of an intervention involving a presentation, action planning, and SMS messages and using objective measurement of sun exposure

# Text CSM dimensions
Intro Schools out for summer! This is Sunny Day, you will receive texts from me over the summer holiday as part of the sun safe study! We hope the information will help you stay safe in the sun!  
1 Fake it! If you like looking tanned then fake tan is better for your skin than sunbathing. Risk perception
2 Spot the odd one out.
To stay sunsafe: use sunscreen, wear sunglasses, wear a hat, cover up, stay in the shade, start a stamp collection.
Controllability
3 Skin cancer is the 2nd most common cancer in young adults in the UK. Reduce your chances of skin cancer by staying safe in the sun. Risk perception
Controllability
4 The sun can cause skin cancer through invisible rays called UV rays. You can’t see them but it is these rays that hit our body and cause skin cancer. Cause
5 The two types of UV rays that affect our skin are UVA and UVB rays. UVA causes aging. This means that you will get wrinkles younger and your skin can turn leathery. Easily remembered as UVAgeing. Consequence
Appearance
6 UVB causes your skin to burn. Easily remembered as UVBurning. Consequence
7 Ralf was diagnosed with skin cancer when he was 24. He said: “I should have protected my skin from the sun a lot more when I was young.” Risk perception
Controllability
8 Those who get diagnosed with skin cancer often regret not having been more careful when they were young. You need to be sunsafe now. Consequence
Timeline
9 “Sunscreen is smelly and sticky” – is that a good enough reason to risk getting sunburnt and increasing your chance of skin cancer? Consequence
Cause
10 You look so nice and healthy with your tan. Isn’t it weird that a sign of skin damage is seen as something healthy? A tan is skin damage. Identity
Appearance
11 Fake it! If you like looking tanned then fake tan is better for your skin than sunbathing. Controllability
Appearance
12 Avoid the lobster look. Sunburn hurts, makes you look stupid and keeps you out of action. Consequence
Appearance
13 You wouldn’t sit in a car without a seatbelt on, would you? Make sure you do the same in the sun. Sunscreen is your sun-seatbelt! Controllability
14 How do you think celebrities keep their skin looking young? Thats right its sunscreen! Cheaper and less painful than a facelift… Appearance
Controllability
End Thanks for taking part in our study – hope you had a good summer holiday!