A source of error in self-reports of pap test utilization.

The prevention and early detection of cervical cancer is achieved through women's regular use of Pap tests. Ascertaining adherence to Pap screening guidelines is often based on self-report, which may be unreliable. This study examined the reliability of Pap test self-reports and one potential source of error in them. We predicted that women having any gynecological examination (other than Pap tests) would falsely report having had a Pap test more often than women who had not experienced gynecological procedures. We compared self-reported Pap test utilization with medical records among 161 low-income women. Women with no Pap test in their medical record but who had experienced other gynecological procedures falsely reported a Pap test significantly more often than those women who actually received a Pap test or who had not received any gynecological procedure. Confusion over what type of gynecological procedures these women received could result in their under-utilization of Pap tests. Further, these findings question the validity of study findings based only on self-reported outcomes.