Studies which use structured diagnostic interviews, rather than self-report questionnaires,
tend to find lower rates of depression. Using a two-step process with the EPDS as a screen,
followed by a structured clinical interview, a Nigerian study found that 8.3% of semiurban
pregnant women were diagnosed with major or minor depressive disorder (Adewuya, Ola,
Aloba, Dada, & Fasoto, 2007). Using a structured interview alone, Felice and colleagues
found that 14.