Purpose: The adaptation into Portuguese and evaluation of the Index of Scientific Quality (ISQ) questionnaire applicability's in texts presented by Brazilian magazines on woman's health. Methods: A transversal cohort study. Texts published from August 2005 to July 2007, in the main weekly magazines Veja, Época and Isto é, were collected. The questionnaire used is composed of eight items, with five alternatives each, measuring the applicability, opinion degree, validity and implications of the finding, precision, coherence and relevance of the data, besides a global item summarizing all the other items. ISQ was translated, retro-translated and submitted to a pilot test till the final version, which was used by two medical doctors and two jou...