Abstract
The Skaraborg county council decided in 1987 to subsidised cycle helmets for the counties four year old children. The goal for research was to map out and evaluate the effect of subsidised cycle helmets to four year olds and the impact it may have had on reduction of head injuries resulting from cycling. This study comprises partly a survey of attitudes regarding the use of child safety helmets based on an random sample of 750 families, and partly data from the hospital's discharge register for children aged 0-14 years over a period of eleven years for bicycle accidents, single of due to collision with cars. All diagnoses have been studied with special focus on concussions.