Therapist effects in outpatient psychotherapy: A three-level growth curve approach

Wolfgang Lutz*, Zoran Martinovich, John S. Lyons, Scott C. Leon, William B. Stiles

*Corresponding author for this work

Research output: Contribution to journalArticle

149 Citations (Scopus)

Abstract

Evidence suggests that a moderate amount of variance in patient outcomes is attributable to therapist differences. However, explained variance estimates vary widely, perhaps because some therapists achieve greater success with certain kinds of patients. This study assessed the amount of variance in across-session change in symptom intensity scores explained by therapist differences in a large naturalistic data set (1,198 patients and 60 therapists, who each treated 10-77 of the patients). Results indicated that approximately 8% of the total variance and approximately 17% of the variance in rates of patient improvement could be attributed to the therapists. Cross-validation and extreme group analyses validated the existence of these therapist effects.

Original languageEnglish (US)
Pages (from-to)32-39
Number of pages8
JournalJournal of Counseling Psychology
Volume54
Issue number1
DOIs
StatePublished - Jan 1 2007

Fingerprint

Psychotherapy
Outpatients
Growth

Keywords

  • Expected treatment response
  • Outcomes management
  • Outpatient psychotherapy
  • Symptom intensity
  • Therapist effects
  • Three-level growth curve model

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology

Cite this

Lutz, Wolfgang ; Martinovich, Zoran ; Lyons, John S. ; Leon, Scott C. ; Stiles, William B. / Therapist effects in outpatient psychotherapy : A three-level growth curve approach. In: Journal of Counseling Psychology. 2007 ; Vol. 54, No. 1. pp. 32-39.
@article{9c02765f706d4dcbb51781e6317faac2,
title = "Therapist effects in outpatient psychotherapy: A three-level growth curve approach",
abstract = "Evidence suggests that a moderate amount of variance in patient outcomes is attributable to therapist differences. However, explained variance estimates vary widely, perhaps because some therapists achieve greater success with certain kinds of patients. This study assessed the amount of variance in across-session change in symptom intensity scores explained by therapist differences in a large naturalistic data set (1,198 patients and 60 therapists, who each treated 10-77 of the patients). Results indicated that approximately 8{\%} of the total variance and approximately 17{\%} of the variance in rates of patient improvement could be attributed to the therapists. Cross-validation and extreme group analyses validated the existence of these therapist effects.",
keywords = "Expected treatment response, Outcomes management, Outpatient psychotherapy, Symptom intensity, Therapist effects, Three-level growth curve model",
author = "Wolfgang Lutz and Zoran Martinovich and Lyons, {John S.} and Leon, {Scott C.} and Stiles, {William B.}",
year = "2007",
month = "1",
day = "1",
doi = "10.1037/0022-0167.54.1.32",
language = "English (US)",
volume = "54",
pages = "32--39",
journal = "Journal of Counseling Psychology",
issn = "0022-0167",
publisher = "American Psychological Association Inc.",
number = "1",

}

Therapist effects in outpatient psychotherapy : A three-level growth curve approach. / Lutz, Wolfgang; Martinovich, Zoran; Lyons, John S.; Leon, Scott C.; Stiles, William B.

In: Journal of Counseling Psychology, Vol. 54, No. 1, 01.01.2007, p. 32-39.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Therapist effects in outpatient psychotherapy

T2 - A three-level growth curve approach

AU - Lutz, Wolfgang

AU - Martinovich, Zoran

AU - Lyons, John S.

AU - Leon, Scott C.

AU - Stiles, William B.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Evidence suggests that a moderate amount of variance in patient outcomes is attributable to therapist differences. However, explained variance estimates vary widely, perhaps because some therapists achieve greater success with certain kinds of patients. This study assessed the amount of variance in across-session change in symptom intensity scores explained by therapist differences in a large naturalistic data set (1,198 patients and 60 therapists, who each treated 10-77 of the patients). Results indicated that approximately 8% of the total variance and approximately 17% of the variance in rates of patient improvement could be attributed to the therapists. Cross-validation and extreme group analyses validated the existence of these therapist effects.

AB - Evidence suggests that a moderate amount of variance in patient outcomes is attributable to therapist differences. However, explained variance estimates vary widely, perhaps because some therapists achieve greater success with certain kinds of patients. This study assessed the amount of variance in across-session change in symptom intensity scores explained by therapist differences in a large naturalistic data set (1,198 patients and 60 therapists, who each treated 10-77 of the patients). Results indicated that approximately 8% of the total variance and approximately 17% of the variance in rates of patient improvement could be attributed to the therapists. Cross-validation and extreme group analyses validated the existence of these therapist effects.

KW - Expected treatment response

KW - Outcomes management

KW - Outpatient psychotherapy

KW - Symptom intensity

KW - Therapist effects

KW - Three-level growth curve model

UR - http://www.scopus.com/inward/record.url?scp=33846108910&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846108910&partnerID=8YFLogxK

U2 - 10.1037/0022-0167.54.1.32

DO - 10.1037/0022-0167.54.1.32

M3 - Article

AN - SCOPUS:33846108910

VL - 54

SP - 32

EP - 39

JO - Journal of Counseling Psychology

JF - Journal of Counseling Psychology

SN - 0022-0167

IS - 1

ER -