Figure 1.

Retention of participants in the Early Prediction of Adolescent Depression study (EPAD)

Initial telephone screening identified 469 families. 116 families withdrew before baseline assessment, or were withdrawn for other reasons (incomplete baseline assessments, bipolar diagnosis at baseline assessment; n=16). The baseline eligible sample thus consisted of 337 participants. *Participants were recruited primarily from 62 general practitioner surgeries (263 of 337 of eligible baseline sample), from a database of previously identified adults with recurrent unipolar depression from the community (64 of 337), and via other methods (posters in local health centres, and depression alliance newsletter; 10 of 337). †Numbers vary in main analyses from 209 to 260 due to missing data on individual protective factors.