Group I

Group II

p

 Age at onset of depressive illness (years)

28.1

34.8

<10-3

 first admission in psychiatry (years)

29.9

37.6

<10-3

 Past suicide attempts (%)

43

21

<10-3

 Persistent depressive symptoms (%)

44

34

0.01

 Relapses (%)

33

18

0.042

Subsequent suicidal recurrence (%)

9

3

0.001