How to select representative geographical areas in mental health service research
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Mental health service research can require the selection of representative geographical areas for data collection. This study designed and tested a new method of combining different relevant selection criteria within the context of a survey of housing services for people with mental health disorders in England.
Six criteria were considered relevant to select areas for the survey: deprivation, urban-ness, provision of community mental health care, residential care provision, total mental health care spend and pressure on housing generally. A measure was identified for each criterion and established for each of 166 local areas. Variables were converted to standardised scores and multi-dimensional scaling undertaken to produce a single axis representing all six variables. Study sites were chosen from this. Identifying the spread of the constituent variables among the finally selected areas we established how successfully the resulting selection represented each of the selection criteria. Reliability analyses were performed on the rank positions of each area.
The measures were converted into one axis, and all areas were ranked according to the score on that specifically developed new axis. The scores on the axis showed good reliability when single criteria were eliminated from the equation. The finally selected six areas demonstrated a reasonable spread of scores of each of the constituent variables.
Converting several relevant criteria into one score is a feasible approach to ranking geographical areas to assist in identifying small samples that are arguably representative. The method may be used widely in similar research, but requires the availability of reliable data on relevant selection criteria.
Keywordssampling multidimensional scaling housing services area selection mental health service research
- 1.Bibby P, Shepherd J (2005) Developing a new classification of urban and rural areas for policy purposes—the methodology. F. a. R. A. Department for the Environment. Available from: http://www.defra.gov.uk/rural/ruralstats/rural-defn/Rural_Urban_Methodology_Report.pdf
- 3.Glover G, Barnes D, Wistow R, Bradley S (2005) Mental health service provision for working age adults in England 2003. University of Durham Centre for Public Mental Health, Durham, UKGoogle Scholar
- 5.Ingham A (2006) Mental health finance mapping for english local implementation teams. Autumn review 2005Google Scholar
- 6.Office for National Statistics, 2001 Census: standard area statistics (England and Wales). ESRC/JISC census programme, census dissemination unit, Mimas (University of Manchester)Google Scholar