Joseph B. Leader

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OBJECTIVE There have been few naturalistic follow-up studies of dysthymic disorder. This study describes the 5-year course and outcome of dysthymic disorder. METHOD The authors conducted a prospective, longitudinal follow-up study of 86 outpatients with early-onset dysthymic disorder and 39 outpatients with episodic major depressive disorder. Follow-ups,(More)
Dysthymic disorder (DD) is defined and distinguished from major depressive disorder (MDD) largely on the basis of its course. Surprisingly, however, there have been few prospective, longitudinal studies of the naturalistic course of DD. This article reports the major findings from a prospective, longitudinal 30-month follow-up study of 86 outpatients with(More)
A number of studies have indicated that social support is associated with the course of depression. However, none of these studies have ruled out the potentially confounding effects of personality factors, such as neuroticism. The authors examined whether social support was related to the course of depression after controlling for neuroticism and several(More)
OBJECTIVE This study examined the 30-month stability of axis II conditions. METHOD One hundred eight depressed outpatients received comprehensive, semistructured personality disorder assessments at baseline and at follow-up. RESULTS The diagnostic stability of personality disorders ranged from low to moderate at the categorical level and was generally(More)
We contrasted the overall social functioning of pure dysthymics, double depressives, episodic major depressives and normal controls using both interview and self-report measures of social functioning and depression. In addition, we used hierarchical multiple regression to assess the differential impact of several variables (comorbid personality, anxiety and(More)
BACKGROUND Oral corticosteroid prescriptions are often used in clinical studies as an indicator of asthma exacerbations. However, there is rarely the ability to link a prescription to its associated diagnosis. The objective of this study was to characterize patterns of oral corticosteroid prescription orders for asthma patients using an electronic health(More)
Phenome-Wide Association Studies (PheWAS) comprehensively investigate the association between genetic variation and a wide array of outcome traits. Electronic health record (EHR) based PheWAS uses various abstractions of International Classification of Diseases, Ninth Revision (ICD-9) codes to identify case/control status for diagnoses that are used as the(More)
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