Abstract
BackgroundThe challenge of finding practical, patient-rated outcome measures is a key issue in the evaluation of health care systems and interventions. The ORIDL (Outcome in Relation to Impact on Daily Living) instrument (formerly referred to as the Glasgow Homoeopathic Hospital Outcomes Scale or GHHOS) has been developed to measure patient's views of the outcome of their care by asking about change, and relating this to impact on daily life. The aim of the present paper is to describe the background and potential uses of the ORIDL, and to report on its preliminary validation in a series of three studies in secondary and primary care.MethodsIn the first study, 105 patients attending the Glasgow Homoeopathic Hospital (GHH) were followed-up at 12 months and changes in health status were measured by the EuroQol (EQOL) and the ORIDL. In the second study, 187 new patients at the GHH were followed-up at 3, 12, and 33 months, using the ORIDL, the Short Form 12 (SF-12), and the Measure Yourself Medical Outcome Profile (MYMOP). In study three, 323 patients in primary care were followed for 1 month post-consultation using the ORIDL and MYMOP. In all 3 studies the Patient Enablement Instrument (PEI) was also used as an outcome measure.ResultsStudy 1 showed substantial improvements in main complaint and well-being over 12 months using the ORIDL, with two-thirds of patients reporting improvements in daily living. These improvements were not significantly correlated with changes in serial measures of the EQOL between baseline and 12 months, but were correlated with the EQOL transitions measure. Study 2 showed step-wise improvements in ORIDL scores between 3 and 33 months, which were only weakly associated with similar changes in SF-12 scores. However, MYMOP change scores correlated well with ORIDL scores at all time points. Study 3 showed similar high correlations between ORIDL scores and MYMOP scores. In all 3 studies, ORIDL scores were also significantly correlated with PEI-outcome scores.ConclusionThere is significant agreement between patient outcomes assessed by the ORIDL and the EQOL transition scale, the MYMOP, and the PEI-outcome instrument, suggesting that the ORIDL may be a valid and sensitive tool for measuring change in relation to impact on life.
Highlights
The challenge of finding practical, patient-rated outcome measures is a key issue in the evaluation of health care systems and interventions
The challenge of finding practical, patient-focussed, clinically-relevant outcome measures is a key issue in the increasing call for patient-centred care and clinical governance in health systems around the world [1,2]
Study 1: ORIDL and EQOL scores over 12 month 105 patients consented to follow-up, and 74 returned the questionnaire at 12 months (75% response rate)
Summary
The challenge of finding practical, patient-rated outcome measures is a key issue in the evaluation of health care systems and interventions. Created initially for evaluating experimental clinics [6], its increasing adoption under its former name, the Glasgow Homoepathic Hospital Outcome Scale (GHHOS), in a number of centres [7,8,9,10,11] and studies [1217] has created a need to study its validity which has not previously been explored. It differs from many other scales by asking about change directly, and by relating outcome to the effect of the intervention on impact on daily life. In the present paper we report on a series of studies in which we have had the opportunity to compare the ORIDL with three validated measures in secondary (integrative care) and primary (conventional care) settings
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