The development and internal consistency of the Satisfaction with Antipsychotic Medication scale

Rofail, Diana and Gray, Richard and Gournay, Kevin (2005) The development and internal consistency of the Satisfaction with Antipsychotic Medication scale. Psychological Medicine, 35 (7). pp. 1063-1072. ISSN 0033-2917

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Full text URL: http://dx.doi.org/10.1017/S0033291705004526

Abstract

Background. Satisfaction with antipsychotic medication is an important outcome variable. To date, there is a lack of a well-established measure to quantify patient satisfaction with psychiatric medication. This paper describes the development, dimensionality, reliability and validity of the Satisfaction with Antipsychotic Medication (SWAM) scale.

Method. Clinical and academic experts devised a 33-item Likert scale satisfaction questionnaire. Following a pilot study in a sample of 69 people with schizophrenia, 315 people with schizophrenia on the caseload of local mental health services in three London boroughs completed the questionnaire. The dimensionality, internal consistency and validity of the devised instrument were assessed.

Results. Reliability of the SWAM scale was good for subscales and total scores. The α coefficient for the two subscales: treatment acceptability and medication insight were 0·92 and 0·84 respectively. The α coefficient for the SWAM scale total score was 0·91 and ranged from 0·92 to 0·90.

Conclusion. Testing of the psychometric properties of the SWAM scale demonstrate that it is a reliable instrument for measuring patient satisfaction with antipsychotic medication. The measure could be used in routine clinical practice in mental health services to assess patient satisfaction with psychiatric medication.

Item Type:Article
Additional Information:Background. Satisfaction with antipsychotic medication is an important outcome variable. To date, there is a lack of a well-established measure to quantify patient satisfaction with psychiatric medication. This paper describes the development, dimensionality, reliability and validity of the Satisfaction with Antipsychotic Medication (SWAM) scale. Method. Clinical and academic experts devised a 33-item Likert scale satisfaction questionnaire. Following a pilot study in a sample of 69 people with schizophrenia, 315 people with schizophrenia on the caseload of local mental health services in three London boroughs completed the questionnaire. The dimensionality, internal consistency and validity of the devised instrument were assessed. Results. Reliability of the SWAM scale was good for subscales and total scores. The α coefficient for the two subscales: treatment acceptability and medication insight were 0·92 and 0·84 respectively. The α coefficient for the SWAM scale total score was 0·91 and ranged from 0·92 to 0·90. Conclusion. Testing of the psychometric properties of the SWAM scale demonstrate that it is a reliable instrument for measuring patient satisfaction with antipsychotic medication. The measure could be used in routine clinical practice in mental health services to assess patient satisfaction with psychiatric medication.
Keywords:Antipsychotic medication, Questionnaires
Subjects:L Social studies > L510 Health & Welfare
B Subjects allied to Medicine > B760 Mental Health Nursing
Divisions:College of Social Science > School of Health & Social Care
ID Code:1040
Deposited By: Bev Jones
Deposited On:23 Aug 2007
Last Modified:22 Feb 2010 15:16

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