TY - JOUR
T1 - Premorbid intelligence and educational level in bipolar and unipolar disorders
T2 - A Danish draft board study
AU - Sørensen, Holger Jelling
AU - Sæbye, Ditte
AU - Parnas, Annik Francoise Urfe
AU - Mortensen, Erik Lykke
AU - Parnas, Josef
N1 - Copyright © 2011 Elsevier B.V. All rights reserved.
PY - 2012
Y1 - 2012
N2 - BACKGROUND: Registry-based studies have found no or weak associations between premorbid intelligence and the broad entity of affective spectrum disorder, but none of the studies compared bipolar/unipolar subgroups. METHODS: IQ and educational level were assessed at the draft board, and hospital diagnoses were followed up to the ages 43-54years for 294 individuals hospitalized with bipolar disorder and 1434 with unipolar or depressive disorder. Controls comprised 20,531 individuals without psychiatric registration. RESULTS: Mean IQs of 98.32 and 96.71 were observed for patients with bipolar and depressive disorder respectively. For both patient groups a unimodal, slightly negatively skewed distribution was observed. The difference between the two patient samples was not statistically significant (p=0.10), but both obtained lower mean scores than the controls (p
AB - BACKGROUND: Registry-based studies have found no or weak associations between premorbid intelligence and the broad entity of affective spectrum disorder, but none of the studies compared bipolar/unipolar subgroups. METHODS: IQ and educational level were assessed at the draft board, and hospital diagnoses were followed up to the ages 43-54years for 294 individuals hospitalized with bipolar disorder and 1434 with unipolar or depressive disorder. Controls comprised 20,531 individuals without psychiatric registration. RESULTS: Mean IQs of 98.32 and 96.71 were observed for patients with bipolar and depressive disorder respectively. For both patient groups a unimodal, slightly negatively skewed distribution was observed. The difference between the two patient samples was not statistically significant (p=0.10), but both obtained lower mean scores than the controls (p
U2 - 10.1016/j.jad.2011.12.007
DO - 10.1016/j.jad.2011.12.007
M3 - Journal article
C2 - 22209188
SN - 0165-0327
VL - 136
SP - 1188
EP - 1191
JO - Journal of Affective Disorders
JF - Journal of Affective Disorders
IS - 3
ER -