Type A behaviour differentiates bipolar II from unipolar depressed patients

Area of Science:

• Psychiatry
• Psychology
• Behavioral Science

Background:

• Type A behaviour pattern (TABP) is linked to coronary heart disease.
• TABP traits like impatience and competitiveness may overlap with bipolar disorder traits.
• This study investigates TABP differences in unipolar and bipolar II depression and its relation to affective temperaments and migraine.

Purpose of the Study:

• To compare Type A behaviour pattern (TABP) in depressed unipolar and bipolar II patients.
• To explore the relationship between TABP, affective temperaments, and migraine headaches.

Main Methods:

• Utilized the Jenkins Activity Survey (JAS) to measure TABP in 99 patients with major affective disorders.
• Diagnosed affective temperaments using Akiskal's criteria and migraine using International Headache Society criteria.
• Analyzed JAS scores for overall TABP and its components: speed and impatience (S), job involvement (J), and hard-driving/competitiveness (H).

Main Results:

• Patients with bipolar II disorder (n=23) showed significantly higher JAS scores than unipolar patients (n=42).
• Differences in TABP were primarily driven by the 'speed and impatience' (factor S) component.
• Higher TABP scores correlated with cyclothymic temperament, while lower scores correlated with depressive temperament. TABP was not associated with migraine.

Conclusions:

• The Jenkins Activity Survey effectively differentiates between depressed unipolar and bipolar II patients based on Type A behaviour pattern.
• Findings suggest distinct behavioral profiles associated with different affective disorder diagnoses.