%0 Journal Article %T Validaci¨®n de un instrumento para medir la percepci¨®n de la calidad de los servicios farmac¨¦uticos del Sistema P¨²blico de Salud de Costa Rica %A C¨¦spedes Quir¨®s %A Yehudi %A Cort¨¦s ¨¢ngel %A Rafael %A Madrigal Meneses %A Mariela %J Revista Costarricense de Salud P¨²blica %D 2011 %I Asociaci¨®n Costarricense de Salud P¨²blica %X objective: to develop a valid and reliable instrument to assess the perceived quality by the users of pharmaceutical services in the costa rican public health system. methods: it was developed an instrument conformed of three dimensions: technical, interpersonal, and environmental, with 53 likert scale items. it was evaluated by four pharmacy professionals with extensive experience in investigative, administrative and clinical areas, from which turned out in a questionnaire of 49 questions applied to 115 users of the pharmacy from the san rafael de alajuela hospital. to analyze unidimensionality was applied factor analysis, for reliability the item-total correlation, and for internal consistency cronbach¡¯s alpha. the statistical package used was spss, version 17. results: factor analysis determined unidimensionality in the instrument, the first factor accumulated 30,1% of the total variance and the second 8,1%, which means that all the items that comprise the actual indicator is measuring a single construct theoretical, that means that forms a scale. reliability analysis suggested the elimination of five items and another by aspects of internal consistency, for a final cronbach¡¯s alpha of 0,951. conclusions: this is the first valid and reliable instrument for measuring perceived quality in pharmacy units of costa rican¡¯s social security %K perception %K pharmaceutical services %K health care %K costa rica. %U http://www.scielo.sa.cr/scielo.php?script=sci_abstract&pid=S1409-14292011000200002&lng=en&nrm=iso&tlng=en