Behavior change in the funny papers: feedback to cartoonists on safety belt use.

A multiple baseline across 8 nationally syndicated cartoonists evaluated the effects of personal advocacy letters encouraging presentations of a specific prevention message--the depiction of safety belt use in comic strips showing motor vehicle occupants. During baseline these cartoonists depicted safety belt use in only 15% (6 of 41) of their strips with occupied vehicles, but following receipt of a personal letter requesting safety belt use 41% (42 of 102) of their strips depicted safety belt use. Four cartoonists showed clear and immediate increases in depiction of safety belt use, 2 demonstrated delayed and somewhat less consistent belt use, and 2 cartoonists showed no change. The approach and results are discussed with regard to advocacy efforts intended to influence presentation of prevention messages in the media.