Women enrolled in a multicenter prospective study were evaluated to identify any possible relationship between depressive symptoms and the use of contraceptives. Women choosing Depo-Provera (n = 495) were evaluated before starting these contraceptives and were reinterviewed 1 year later. Women who continued the method had lower depressive symptom scores at baseline than did the women who discontinued the method or who were lost to follow-up. Among the continuing Depo-Provera users, the depressive symptom scores improved slightly at 1 year (7.4 vs 6.7). Those subjects with the highest (i.e., worst) scores at enrollment demonstrated improved scores at follow-up.
PIP: The product labeling for Depo-Provera cites depression as an infrequent side effect. Previous research on this topic has documented self-reported depression or mood changes in 1-5% of Depo-Provera users. These studies were limited, however, by a lack of measurement of baseline depression. In the present study, 495 new acceptors of Depo-Provera enrolled in a broader prospective cohort study conducted at three US hospitals (Texas, Pennsylvania, New York) were interviewed at enrollment and again after 12 months of use. Included in both the initial and follow-up questionnaires were six questions on depressive symptoms in the past month taken from the Mental Health Inventory. At 12 months, 172 women were still using Depo-Provera, 221 had discontinued the method, and 102 were lost to follow-up. Women who were still using Depo-Provera at 12 months had lower depressive symptom scores at baseline than women who discontinued use or were lost to follow-up. Between baseline and the 12-month follow-up, the mean depression score dropped from 7.4 to 6.7 among continuing users and remained steady at 8.0 among discontinuers. The mean depression score in the quintile of women with the highest depression scores at baseline also decreased after 12 months of use, from 15.4 to 9.5. These results suggest that Depo-Provera use is not likely to exacerbate symptoms in women with pre-existing depression.