(Q37553621)

21 August 2017

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title

Therapist variation within randomised trials of psychotherapy: implications for precision, internal and external validity (English)

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21 August 2017

Rebecca Walwyn

1

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21 August 2017

Chris Roberts

series ordinal

2

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21 August 2017

publication date

16 July 2009

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Statistical Methods in Medical Research

21 August 2017

published in

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21 August 2017

volume

19

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21 August 2017

issue

3

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21 August 2017

page(s)

291-315

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NIMH Treatment of Depression Collaborative Research Program. Background and research plan.

21 August 2017

cites work

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Should providers of treatment be regarded as a random factor? If it ain't broke, don't "fix" it: a comment on Siemer and Joormann (2003).

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Do therapists vary much in their success? Findings from four outcome studies.

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

The question of therapists' differential effectiveness. A Sheffield Psychotherapy Project addendum.

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Estimating variability in outcomes attributable to therapists: a naturalistic study of outcomes in managed care.

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Psychiatrist effects in the psychopharmacological treatment of depression.

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

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

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Untangling the alliance-outcome correlation: exploring the relative importance of therapist and patient variability in the alliance.

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

The implications of variation in outcome between health professionals for the design and analysis of randomized controlled trials.

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Clustering by health professional in individually randomised trials

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Design and analysis of clinical trials with clustering effects due to treatment.

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Extending the CONSORT statement to randomized trials of nonpharmacologic treatment: explanation and elaboration

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Cognitive behavioral therapy for posttraumatic stress disorder in women: a randomized controlled trial

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Telephone administered cognitive behaviour therapy for treatment of obsessive compulsive disorder: randomised controlled non-inferiority trial

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Sample size calculation for cluster randomized cross-over trials

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Analysis of cluster randomized cross-over trial data: a comparison of methods

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Therapists as fixed versus random effects-some statistical and conceptual issues: a comment on Siemer and Joormann (2003).

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

The consequence of ignoring a nested factor on measures of effect size in analysis of variance

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Statistical considerations in the design and analysis of community intervention trials

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Randomised controlled trial comparing cost effectiveness of general practitioners and nurse practitioners in primary care

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Statistical evaluation of learning curve effects in surgical trials.

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Clinical trials of behavioural interventions with heterogeneous teaching subgroup effects

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

A COMPARISON OF POWER APPROXIMATIONS FOR SATTERTHWAITE'S TEST.

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

Sample size formulae for trials comparing group and individual treatments in a multilevel model

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Unequal cluster sizes for trials in English and Welsh general practice: implications for sample size calculations

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Conceptual and methodological issues in comparative studies of psychotherapy and pharmacotherapy, I: Active ingredients and mechanisms of change

21 January 2018

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Conceptual and methodological issues in comparative studies of psychotherapy and pharmacotherapy, II: Nature and timing of treatment effects

21 January 2018

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https://api.crossref.org/works/10.1177%2F0962280209105017

National Institute of Mental Health Treatment of Depression Collaborative Research Program

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Power and measures of effect size in analysis of variance with fixed versus random nested factors

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

United Kingdom Alcohol Treatment Trial (UKATT): hypotheses, design and methods

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Design of Department of Veterans Affairs Cooperative Study no. 420: group treatment of posttraumatic stress disorder

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Issues in the design of multisite clinical trials of psychotherapy: VA Cooperative Study No. 494 as an example.

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Contamination in trials: is cluster randomisation the answer?

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Need for expertise based randomised controlled trials

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

Assumptions and consequences of treating providers in therapy studies as fixed versus random effects: reply to Crits-Christoph, Tu, and Gallop (2003) and Serlin, Wampold, and Levin (2003).

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

The clinical trial as a paradigm for epidemiologic research

21 January 2018

1 reference

https://api.crossref.org/works/10.1177%2F0962280209105017

21 January 2018

Identifiers

DOI

10.1177/0962280209105017

1 reference

21 August 2017

1 reference