Here's an interesting tidbit: Oakland University in Rochester, Michigan, conducted a study on the reliability of telephone screening for identification of postpartum depression. Eight weeks after discharge from the hospital, 106 women participating in the study were screened over the phone using the Postpartum Depression Screening Scale (PDSS). The results found that, as compared to in-person screening, telephone screening is a reliable method to screen for postpartum symptomatology that may occur later than the 6-week office visit.
For more on postpartum depression screening methods, click here.