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  • Title: Measuring access to health services: General Dental Services in Scotland.
    Author: Tilley CJ, Chalkley MJ.
    Journal: Br Dent J; 2005 Nov 12; 199(9):599-601; discussion 583. PubMed ID: 16288263.
    Abstract:
    OBJECTIVE: Recently the issue of access to health services has been brought into sharp focus by clear evidence of rationing--patients queuing for NHS registration--in the NHS General Dental Services (GDS). Conventional estimates suggest that about 50% of adults are registered per annum. This paper demonstrates that these conventional measures of access and utilisation can generate potentially misleading inferences. DESIGN: By analysing individual-level claims data from over 35,000 patients over six years we are able to: identify the underlying patterns of utilisation that generate the aggregate 50% registration rate; provide more detailed estimates of utilisation and access; and suggest possible determinants of the patterns of utilisation we observe. SETTING: Primary care health services. RESULTS: In contrast to conventional estimates of access we find that close to 80% of the adult population in Scotland has had access to GDS over a six year period. Moreover, we find that the population is comprised of a relatively large group of patients (30% of the population) who access GDS at least once a year and a substantial group (19% of the adult population) who access services only once in six years. The groups who access services at intermediate frequencies are less numerous. CONCLUSIONS: Assessing the effectiveness of the public provision of health care services requires accurate information regarding access to those services. This paper sets out a framework for analysing and interpreting longitudinal data to provide information on the extent of access to health care services.
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