A questionnaire was used to obtain the age civil status number of living children place of birth data of 95 female workers at the Autonomous Metropolitan University (UAM) in Mexico City. An educational program employed videocassettes and posters to stimulate participants to collaborate in health education groups. Six groups with an average of eight participants per group were formed. The concept was based on the theory of E. Pichon Riviere and a gender-based analysis of womens health. A more in-depth survey aimed to establish a relationship between family size place of birth age schooling information and use of birth control methods. 40% of the female workers were aged between 21 and 29 years 29% between 30-39 11% less than 20 and 20% were 40 years or more. 3.1% had never attended school 58% had completed grade school 6.3% had completed secondary school (junior high) and only 1.1% had college level schooling. The level of schooling and age were not significantly related to variables such as: knowledge and use of contraceptive methods family size and origin number of offspring and/or abortions length of breast-feeding period and self-medication. 62.6% of these female workers had one to three children. 89% were familiar with oral contraceptives 59% with the IUD 58% with injectables and 45% with the condom contraceptive foams and surgical contraception. However 37% had never used any contraceptive method 42% were using hormonal injectable contraceptives and 21% were using the pill or an IUD. The workers had more confidence in the information given by people such as sisters female friends and female neighbors (62%) than by pharmacists (20%) doctors or other health personnel (12%). The results indicated that: 1) the relationship of stimulus-response between information and practices did not exist; 2) the design of an educational health strategy should be based on a profound knowledge of the characteristics and needs of the people for whom the program will be implemented.