The effect of computerisation on the quality of care in Australian general practice

This thesis describes a study of the utilisation of computers by individual general practitioners (GPs) in Australia, and compares the practice behaviour of GPs who use a computer as a clinical tool, either by prescribing, ordering tests, or storing patient data in an electronic medical record format, with those who do not use a computer for these functions. A survey of individual GP’s use of computers was conducted among 1,336 GPs who participated in the Bettering the Evaluation and Care of Health (BEACH) program between October 2003 and March 2005. The GPs were then assigned to groups according to their clinical use (or not) of a computer, and were compared on a range of variables including the characteristics of the GPs themselves, their practices, their patients, the morbidity they managed for their patients, and the managements they provided. Their behaviour was also compared, using a set of quality indicators designed for use with the BEACH data, and applicable in a primary care setting, to determine whether the clinical use of a computer has an affect on the quality of care GPs provide to their patients. Finally, GPs who use clinical software with embedded pharmaceutical advertising were compared with GPs not exposed to advertisements via this media, to determine whether such advertising influences the prescribing behaviour of GPs to favour advertised brands. From 44 quality indicators examined, clinical computer users performed ‘better’ on four and ‘worse’ on four. For the remaining 36 they exhibited no difference. Exposure to pharmaceutical advertising embedded in clinical software did not influence the prescribing behaviour of the GPs so exposed. Despite the belief espoused in the literature that computer use will improve the quality of patient care, I have found no evidence to demonstrate that the use of a computer for clinical activity has (as yet) affected, either positively or negatively, the quality of care GPs provide to their patients. The current push to computerise general practice will mean that this method of assessment will be difficult to replicate in the future, given the absence of control groups. Other research methods will need to be developed

SAFE-FLOW : a systematic approach for safety analysis of clinical workflows

The increasing use of technology in delivering clinical services brings substantial benefits to the healthcare industry. At the same time, it introduces potential new complications to clinical workflows that generate new risks and hazards with the potential to affect patients’ safety. These workflows are safety critical and can have a damaging impact on all the involved parties if they fail.Due to the large number of processes included in the delivery of a clinical service, it can be difficult to determine the individuals or the processes that are responsible for adverse events. Using methodological approaches and automated tools to carry out an analysis of the workflow can help in determining the origins of potential adverse events and consequently help in avoiding preventable errors. There is a scarcity of studies addressing this problem; this was a partial motivation for this thesis.The main aim of the research is to demonstrate the potential value of computer science based dependability approaches to healthcare and in particular, the appropriateness and benefits of these dependability approaches to overall clinical workflows. A particular focus is to show that model-based safety analysis techniques can be usefully applied to such areas and then to evaluate this application.This thesis develops the SAFE-FLOW approach for safety analysis of clinical workflows in order to establish the relevance of such application. SAFE-FLOW detailed steps and guidelines for its application are explained. Then, SAFE-FLOW is applied to a case study and is systematically evaluated. The proposed evaluation design provides a generic evaluation strategy that can be used to evaluate the adoption of safety analysis methods in healthcare.It is concluded that safety of clinical workflows can be significantly improved by performing safety analysis on workflow models. The evaluation results show that SAFE-FLOW is feasible and it has the potential to provide various benefits; it provides a mechanism for a systematic identification of both adverse events and safeguards, which is helpful in terms of identifying the causes of possible adverse events before they happen and can assist in the design of workflows to avoid such occurrences. The clear definition of the workflow including its processes and tasks provides a valuable opportunity for formulation of safety improvement strategies

EMPOWERING PHYSICIANS WITH ELECTRONIC HEALTH RECORD SYSTEMS: FROM SYSTEM CAPABILITIES TO ADOPTION INTENTION

Ph.DDOCTOR OF PHILOSOPH

Usability analysis of contending electronic health record systems

In this paper, we report measured usability of two leading EHR systems during procurement. A total of 18 users participated in paired-usability testing of three scenarios: ordering and managing medications by an outpatient physician, medicine administration by an inpatient nurse and scheduling of appointments by nursing staff. Data for audio, screen capture, satisfaction rating, task success and errors made was collected during testing. We found a clear difference between the systems for percentage of successfully completed tasks, two different satisfaction measures and perceived learnability when looking at the results over all scenarios. We conclude that usability should be evaluated during procurement and the difference in usability between systems could be revealed even with fewer measures than were used in our study. © 2019 American Psychological Association Inc. All rights reserved.Peer reviewe

Clinical foundations and information architecture for the implementation of a federated health record service

Clinical care increasingly requires healthcare professionals to access patient record information that may be distributed across multiple sites, held in a variety of paper and electronic formats, and represented as mixtures of narrative, structured, coded and multi-media entries. A longitudinal person-centred electronic health record (EHR) is a much-anticipated solution to this problem, but its realisation is proving to be a long and complex journey. This Thesis explores the history and evolution of clinical information systems, and establishes a set of clinical and ethico-legal requirements for a generic EHR server. A federation approach (FHR) to harmonising distributed heterogeneous electronic clinical databases is advocated as the basis for meeting these requirements. A set of information models and middleware services, needed to implement a Federated Health Record server, are then described, thereby supporting access by clinical applications to a distributed set of feeder systems holding patient record information. The overall information architecture thus defined provides a generic means of combining such feeder system data to create a virtual electronic health record. Active collaboration in a wide range of clinical contexts, across the whole of Europe, has been central to the evolution of the approach taken. A federated health record server based on this architecture has been implemented by the author and colleagues and deployed in a live clinical environment in the Department of Cardiovascular Medicine at the Whittington Hospital in North London. This implementation experience has fed back into the conceptual development of the approach and has provided "proof-of-concept" verification of its completeness and practical utility. This research has benefited from collaboration with a wide range of healthcare sites, informatics organisations and industry across Europe though several EU Health Telematics projects: GEHR, Synapses, EHCR-SupA, SynEx, Medicate and 6WINIT. The information models published here have been placed in the public domain and have substantially contributed to two generations of CEN health informatics standards, including CEN TC/251 ENV 13606