The incidence of malignant melanoma and non-melanoma skin cancers has incre
ased rapidly in Sweden during the last 20 years. The best-known way to reve
rt this trend is primary prevention. Matching health messages to readiness
to change in the population may enhance the effect of community-based preve
ntion. The aims of this study were to investigate readiness to change sun-p
rotective behaviour in two groups (visitors to mobile screening units and b
each-goers) and to test a single-item algorithm in assessing the stage of c
hange in sun-protective behaviour. Seven hundred and forty-two visitors to
the mobile screening units and 202 individuals on nearby beaches answered a
short questionnaire. The assessment of readiness to change was based on st
ages of change in sun-protective behaviour modified from the Transtheoretic
al Model of Behaviour Change. As expected, the visitors to the screening un
its were more often in action / maintenance stages than the beach group for
most sun-protective behaviours. In conclusion, the single-item algorithm m
ethod appears to be sensitive to assess readiness to change sun-protective
behaviour, based on the Transtheoretical Model of Behaviour Change. This me
thod can be incorporated into population surveys and may aid in developing
successful skin cancer prevention programmes. (C) 2001 Lippincott Williams
& Wilkins.