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Table 1 Derivation of depression variables [37]

From: Sexual and physical abuse and depressive symptoms in the UK Biobank

Criteria Depression variable Definition based on criteria
1. Ever felt depressed for a whole week
2. Ever disinterested or unenthusiastic for a whole week
3. Only 1 episode
4. ≥ 2 episodes
5. Episode lasted ≥2 weeks
6. Ever seen a GP for nerves, anxiety, tension or depression
7. Ever seen a psychiatrist for nerves, anxiety, tension or depression
Single episode of probable major depression {(1) AND (3) AND (5) AND [(6) OR (7)]}
OR
{(2) AND (3) AND (5) AND [(6) OR (7)]}
Probable recurrent major depression (moderate) [(1) OR (2)] AND (4) AND (5) AND (6)
Probable recurrent major depression (severe) [(1) OR (2)] AND (4) AND (5) AND (7)