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Acute Interpersonal Psychotherapy for Major Depressive Disorder:Predictors of Specificity

Bailey, Bridget Catherine (2009) Acute Interpersonal Psychotherapy for Major Depressive Disorder:Predictors of Specificity. Undergraduate Thesis, University of Pittsburgh. (Unpublished)

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ABSTRACT Background: Psychotherapy treatment specificity is the degree to which therapists utilize specific factors and not others of an intended treatment during therapy sessions. In Interpersonal psychotherapy (IPT), increased specificity has been associated with greater efficacy. IPT, however, is a dyadic intervention, and little is known about the relationship between patients' pre-treatment characteristics and IPT specificity. Understanding patient characteristics that predict treatment specificity is crucial for treatment optimization. Methods: Subjects meeting DSM-IV criteria for Major Depressive Disorder were randomly assigned to IPT or escitalopram. Data from a small sub-set of subjects were examined: 20 patients (8 males, 12 females), randomized to receive IPT from one of four study therapists. Subjects remitted with IPT alone. The following predictors were hypothesized to be associated with higher treatment specificity: a) treatment preference match (patients indicating a preference for psychotherapy) as opposed to non-match (patients indicating a preference for medication or no preference); b) lower baseline scores on anxiety spectrum assessments; and, c) higher severity baseline depression scores. Patient/ therapist gender match (female patient matched with female therapist) in comparison to non-gender match (male patient with female therapist) were predicted to produce negligible results.Results: Higher baseline depressive severity predicted higher IPT specificity. Higher baseline depressive severity and preference for no therapy were highly correlated. However, patient treatment preference, therapist/ patient gender match, and anxiety spectrum scores were not related to treatment specificity.Implications: Results suggest that specificity may act as mediator between baseline depressive severity and outcome. Further studies with larger samples are needed.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Bailey, Bridget Catherinebcb6@pitt.eduBCB6
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairPetracchi, Hellenhpssw@pitt.eduHPSSW
Committee CoChairFrank,
Committee MemberGreeno, CatherineGreenoCG@upmc.eduKGREENO
Committee MemberSwartz, HollySwartzHA@upmc.eduHAS7
Committee MemberGrote,
Date: 18 May 2009
Date Type: Completion
Defense Date: 22 April 2009
Approval Date: 18 May 2009
Submission Date: 24 April 2009
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: School of Social Work > Social Work
David C. Frederick Honors College
Degree: BPhil - Bachelor of Philosophy
Thesis Type: Undergraduate Thesis
Refereed: Yes
Uncontrolled Keywords: Interpersonal Psychotherapy; Major Depressive Disorder; Predictors; Treatment Adherence; Treatment Specificity; Depression; Treatment fidelity
Other ID:, etd-04242009-135240
Date Deposited: 10 Nov 2011 19:42
Last Modified: 19 Dec 2016 14:35


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