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What's in a case formulation? Development and use of a content coding manual
T D Eells1, E M Kendjelic, C P Lucas
1Department of Psychiatry and Behavioral Sciences, University of Louisville, Kentucky, USA.
The Journal of Psychotherapy Practice and Research
|April 7, 1998
Summary
This study found that psychiatric clinicians primarily summarize patient information in case formulations, rather than developing comprehensive etiological hypotheses. Most formulations lacked details on predisposing events, stressors, or underlying mechanisms.
Area of Science:
- Psychiatry
- Clinical Psychology
- Psychotherapy Research
Background:
- Case formulation is a cornerstone of psychiatric and psychological practice.
- Effective formulation guides treatment planning and intervention.
- Previous research suggests variability in the depth and comprehensiveness of case formulations.
Purpose of the Study:
- To describe and apply a content coding method for analyzing case formulations.
- To assess the reliability and utility of the coding manual.
- To evaluate the descriptive and inferential content of psychiatric case formulations.
Main Methods:
- A content coding manual was developed to analyze formulation sections.
- Fifty-six intake evaluations from an outpatient psychiatric clinic were randomly selected.
- The manual demonstrated good inter-rater reliability (mean kappa = 0.86).
Main Results:
- 95% of formulations contained descriptive information.
- Only 37% included hypothesized predisposing life events and 16% a precipitating stressor.
- Few formulations inferred psychological (43%), biological (2%), or sociocultural (2%) mechanisms.
Conclusions:
- Psychiatric clinicians predominantly use case formulations for summarizing descriptive data.
- Formulations are generally more descriptive than inferential, and simple rather than complex.
- There is a need to enhance the integration of etiological hypotheses within clinical case formulations.