Objective: to identify the factors related to inadequate practice of the Papanicolaou test among women in northeastern Brazil. Method: cross-sectional study using a KNOWLEDGE, ATTITUDE AND PRACTICE inquiry, performed from June to October, 2013, with 240 women aged between 24 and 59 years. Results: inadequacies were observed, particularly in knowledge, because, despite having information about the examination, it was only used to detect sexually transmitted infections. Regarding the issue of practice, it was noted that single women and those up to 29 years of age were more likely to present inadequate practice than the older and married women, increasing the likelihood of developing cervical cancer. The greater difficulty for performing the examination was the lack of materials (68.1%). Conclusion: clarification for women regarding the examination requires effective communication between the users and health professionals, as well as guarantees and support for the continuity of care by managers.