Table 2

 Psychiatric symptoms and diagnoses according to DSM-IV, based on in depth psychiatric interview, in two groups of low birthweight adolescents compared with a control group at 14 years of age

VLBW (n = 56)SGA (n = 60)Control (n = 83)
Values are number (%).
*p < 0.05, **p < 0.01, ***p ⩽ 0.001 v controls. χ2 test was used to analyse differences in proportions between groups, with Fisher’s exact test when cell number less than five.
†Anxiety disorders: separation anxiety disorder, generalised anxiety disorder, social phobia, or specific phobia.
‡Other disorders: adjustment disorder, elimination disorder, post-traumatic stress disorder, stuttering, tic disorder. None had manic or bipolar, psychotic, or eating disorder.
§Comorbid diagnoses: ADHD, adjustment disorder, anxiety disorder, Asperger’s disorder, conduct disorder, depressive disorder, elimination disorder, post-traumatic stress disorder, stuttering.
DSM-IV, Diagnostic and statistical manual of mental disorder; fourth edition29; VLBW, very low birth weight; SGA, small for gestational age; ADHD, attention deficit/hyperactivity disorder.
Symptoms ⩾ 75% of diagnostic criteria
Symptoms any psychiatric disorder26 (46)***14 (23)11 (13)
Of these
    Symptoms anxiety disorders12 (21)*7 (12)6 (7)
    Symptoms depressive disorder3 (5)3 (5)0
    Symptoms ADHD14 (25)***4 (7)4 (5)
    Symptoms conduct disorder1 (2)3 (5)3 (4)
    Symptoms Asperger’s disorder4 (7)*00
    Other symptom categories5 (9)3 (5)3 (4)
    ⩾2 symptom categories9 (16)4 (7)5 (6)
Diagnostic level
Any psychiatric disorder14 (25)**6 (10)6 (7)
Of these
    Anxiety disorders†8 (14)*4 (7)3 (4)
    Depressive disorder2 (4)00
    ADHD4 (7)2 (3)1 (1)
    Conduct disorder02 (3)1 (1)
    Asperger’s disorder1 (2)00
    Other disorders‡4 (7)1 (2)2 (2)
    ⩾2 diagnoses§5 (9)*2 (3)1 (1)