The accuracy of women performing vaginal pH self-testing

To determine if women could measure their vaginal pH as accurately as could physicians. Each participant measured her vaginal pH using a swab, completed a survey, and then was seen by her physician, who also performed a vaginal pH test. The physician did not have access to the patient's pH reading; only the study coordinator recorded patient results. Accuracy of patient measurements compared with physician results was analyzed by the kappa statistic. A total of 161 women were enrolled in the study. The average difference between the patients' pH readings and the physicians' readings was