• Crispin Jenkinson, Angela Coulter, Steve Bruster, Tarani Chandola, and Phil Jones.
• Picker Institute Europe, Oxford, UK.
• J Health Serv Res Policy. 2003 Apr 1;8(2):83-6.

ObjectivesAll health care providers in England are required to conduct surveys of their patients' experience of health care. Data from such surveys contribute to the 'star rating' performance indicators. However, there are concerns that these subjective measures may be influenced more by characteristics of patients than by true variations in the quality of care. The purpose of this paper is threefold: to determine the relationship between demographic characteristics and an index measure of patients' reported experience; to explore the extent to which patients' experiences may be accounted for by the particular National Health Service (NHS) trust they attended; and to assess how meaningful a summary index is in terms of its ability to discriminate between providers.MethodsData from patients in the National Survey of National Health Service Patients treated for coronary heart disease in 194 NHS trusts. Patients were sent questionnaires after discharge, with a covering letter and a prepaid stamped addressed envelope. Up to two reminders were sent to non-responders. Multi-level linear regression models were used to estimate the extent to which patients' experiences differed between trusts and the association of demographic variables with the summary index.ResultsIn total, 116,872 patients were sent questionnaires, but 3399 proved to be ineligible for the survey. Responses were gained from 84,310 (74.3% of eligible respondents). Age and sex were most strongly associated with reported patients' experiences. However, the actual impact of age and sex on patients' experience is small, accounting for less than 3% of the variance. The proportion of the variance that was accounted for by the hospital trust in which patients were treated was only 5%.ConclusionsDemographic characteristics do not appear to account for differences between hospital trusts in patients' experience of health care. However, there is considerable variation in patients' experience within each provider. This would suggest that summary indices of patients' experience should not be used to rank providers, although detailed information from patient surveys have a useful role in determining priorities for quality improvement within individual hospitals and for assessing changes over time.

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