[Impact of mass communication media on an anti-smoking campaign].

Objective: To assess the impact of the mass media (MM) on smoking cessation process in Mexico.

Material And Methods: Between June 1998 and May 1999, the effects of an anti-smoking mass media campaign and alternative strategies were evaluated, by comparing the monthly sales average of all smoking-cessation aid products before and after marketing a new nicotine patch. Student's t paired and unpaired t tests were used to compare sales.