Trine S Bergmo

Electronic patient-provider communication: will it offset office visits and telephone consultations in primary care?

BACKGROUND AND AIM Electronic patient-provider communication promises to improve efficiency and effectiveness of clinical care. This study aims to explore whether a secure web-based messaging system is an effective way of providing patient care in general practices. METHOD We conducted a randomised controlled trail and recruited 200 patients from the waiting area in one primary clinic in Norway. Participants were randomised to either the intervention group, which received access to a secure messaging system, or the control group receiving standard care without such access. Primary outcome measures were number of online consultations, telephone consultations and office visits in the two groups. Data were derived from patient records and collected 1 year prior to (baseline), and 1 year after the intervention. RESULTS Forty-six percent of the patients who were given access to the messaging system (n=99) used the online communication system on at least one occasion (ranging from 1 to 17 messages per patient per year). A total of 147 electronic messages were sent to six general practitioners during a 1-year trial period. Eleven percent of the messages were to schedule an appointment. In 10% of the messages, the GP was unable to respond adequately and recommended an office visit. The reduction in office visits over time was greater for the intervention group than for the control group (P=0.034). There was however no significant difference in the number of telephone consultations between the groups during the study (P=0.258). CONCLUSION The use of a secure electronic messaging system reduced the number of office visits at the general practice, but not phone consultations.

Can economic evaluation in telemedicine be trusted? A systematic review of the literature.

BackgroundTelemedicine has been advocated as an effective means to provide health care services over a distance. Systematic information on costs and consequences has been called for to support decision-making in this field. This paper provides a review of the quality, validity and generalisability of economic evaluations in telemedicine.MethodsA systematic literature search in all relevant databases was conducted and forms the basis for addressing these issues. Only articles published in peer-reviewed journals and written in English in the period from 1990 to 2007 were analysed. The literature search identified 33 economic evaluations where both costs (resource use) and outcomes (non-resource consequences) were measured.ResultsThis review shows that economic evaluations in telemedicine are highly diverse in terms of both the study context and the methods applied. The articles covered several medical specialities ranging from cardiology and dermatology to psychiatry. The studies analysed telemedicine in home care, and in primary and secondary care settings using a variety of different technologies including videoconferencing, still-images and monitoring (store-and-forward telemedicine). Most studies used multiple outcome measures and analysed the effects using disaggregated cost-consequence frameworks. Objectives, study design, and choice of comparators were mostly well reported. The majority of the studies lacked information on perspective and costing method, few used general statistics and sensitivity analysis to assess validity, and even fewer used marginal analysis.ConclusionAs this paper demonstrates, the majority of the economic evaluations reviewed were not in accordance with standard evaluation techniques. Further research is needed to explore the reasons for this and to address how economic evaluation in telemedicine best can take advantage of local constraints and at the same time produce valid and generalisable results.

An economic analysis of teleradiology versus a visiting radiologist service

An economic analysis of the teleradiology service provided by a university hospital to a local hospital without radiologists was carried out. The average workload at the local hospital was 6000 patients (8000 examinations) per year. In these circumstances teleradiology cost NKr108 per patient, in comparison with NKr178 per patient for the visiting radiologist service which had previously been provided. The total cost of the teleradiology service amounted to NKr646,900 per year; in comparison the visiting radiologist service cost NKr1,069,000 per year. Calculations showed that for teleradiology to be cheaper, the workload had to exceed 1576 patients per year. A sensitivity analysis showed that assuming a shorter equipment lifetime, for instance four years rather than six years, made the threshold value 2320 patients per year instead of 1576.

Patients’ willingness to pay for electronic communication with their general practitioner

Despite the common use of electronic communication in other aspects of everyday life, its use between patients and health care providers has been slow to diffuse. Possible explanations are security issues and lack of payment mechanisms. This study investigated how patients value secure electronic access to their general practitioner (GP). One hundred and ninety-nine patients were asked an open-ended willingness-to-pay (WTP) question as part of a randomised controlled trial. We compared the WTP values between two groups of respondents; one group had had the opportunity to communicate electronically with their GP for a year and the other group had not. Fifty-two percent of the total sample was willing to pay for electronic GP contact. The group of patients with access revealed a significantly lower WTP than the group without such access. Possible explanations are that the system had fewer benefits than expected, a presence of hypothetical bias or simply a preference for face-to-face encounters.

Web-based consultations for parents of children with atopic dermatitis: results of a randomized controlled trial

Aim: To analyse how web‐based consultations for parents of children with atopic dermatitis affect self‐management behaviour, health outcome, health resource use and family costs.

Economic evaluation in telemedicine - still room for improvement.

It has been reported that economic evaluations of telemedicine are less adherent to methodological standards than economic evaluations in other fields. Systematic reviews also show that most studies evaluate benefits in terms of the cost savings, with no assessment of the health benefits for patients. In a recent review of economic evaluations, I found 33 articles that measured both costs and non-resource consequences of using telemedicine in direct patient care. This represents a considerable increase compared to previous reviews. The articles analysed were highly diverse in both study context and applied methods. Most studies used multiple outcome measures, such as diagnostic accuracy, blood glucose levels, wound size or quality-adjusted life-years gained. The effectiveness measures appeared more consistent and well reported than the costings. Objectives, study design and choice of comparators were mostly well reported. However, most studies lacked information on perspective and costing method, few used general statistics and sensitivity analysis to assess validity, and even fewer used marginal analysis. These shortcomings in economic evaluation methodology are relatively common and have been found in other fields of research.

Telemedicine in radiotherapy: a study exploring remote treatment planning, supervision and economics.

In January 2002, the departments of radiotherapy at the University Hospital of North Norway and the Norwegian Radium Hospital were connected through a 2 Mbit/s digital telecommunication line. The treatment planning systems at the two institutions were connected and videoconferencing units were installed. We explored the feasibility of remote treatment planning, supervision, second opinions and education. Tests involved two dummy cases and six patients. Remote simulation procedures were carried out for five patients. A cost-minimization analysis was performed. Treatment planning was not completely successful as the software could not handle plans including bolus or weighting between the fields. Remote supervision was possible. A common patient record and radiotherapy system, including digital imaging, digital prescription and approval forms and digital signature, were felt to be desirable. The threshold (break-even point) comparing the costs of telemedicine with those of transportation by air was 12 patients/year. Telemedicine in radiotherapy appears to be feasible, but some limitations must be overcome.

A tele-obstetric broadband service including ultrasound, videoconferencing and cardiotocogram. A high cost and a low volume of patients.

We established a tele-obstetric service connecting the Department of Obstetrics and Gynaecology at the Nordland Hospital in Bodø to the delivery unit at the Nordland Hospital in Lofoten. The telemedicine service included a videoconferencing link (3 Mbit/s) for transmission of ultrasound scans and a low-speed data link (telephone modem) for transmission of cardiotocograms (CTGs). One hundred and thirty pregnant women entered the antenatal clinic in Lofoten during the eight-month study period. A total of 140 CTGs were recorded. The tele-ultrasound service was used in five cases (4%). The cases were serious malformation, Downs syndrome, breech presentation, vaginal bleeding during pregnancy and triplets. Analysis showed that the cost of patient travel was NOK 2460 per transfer. The variable cost of videoconferencing was NOK 250 per consultation. However, the total investment costs for the telemedicine service, including the broadband infrastructure, was NOK 1.7 million (Euro 212 000). The telemedicine service was not cost saving at annual workloads below 208. We conclude that the installation has to be used by other medical specialities to make it cost-effective.

Using QALYs in telehealth evaluations: a systematic review of methodology and transparency

BackgroundThe quality-adjusted life-year (QALY) is a recognised outcome measure in health economic evaluations. QALY incorporates individual preferences and identifies health gains by combining mortality and morbidity into one single index number. A literature review was conducted to examine and discuss the use of QALYs to measure outcomes in telehealth evaluations.MethodsEvaluations were identified via a literature search in all relevant databases. Only economic evaluations measuring both costs and QALYs using primary patient level data of two or more alternatives were included.ResultsA total of 17 economic evaluations estimating QALYs were identified. All evaluations used validated generic health related-quality of life (HRQoL) instruments to describe health states. They used accepted methods for transforming the quality scores into utility values. The methodology used varied between the evaluations. The evaluations used four different preference measures (EQ-5D, SF-6D, QWB and HUI3), and utility scores were elicited from the general population. Most studies reported the methodology used in calculating QALYs. The evaluations were less transparent in reporting utility weights at different time points and variability around utilities and QALYs. Few made adjustments for differences in baseline utilities. The QALYs gained in the reviewed evaluations varied from 0.001 to 0.118 in implying a small but positive effect of telehealth intervention on patient’s health. The evaluations reported mixed cost-effectiveness results.ConclusionThe use of QALYs in telehealth evaluations has increased over the last few years. Different methodologies and utility measures have been used to calculate QALYs. A more harmonised methodology and utility measure is needed to ensure comparability across telehealth evaluations.

Approaches to economic evaluation in telemedicine

External validity or generalizability is a major challenge in the economic evaluation of telemedicine. There are two possible ways of increasing generalizability: the first is to use a pragmatic trial design so it better reflects normal patient caseload and everyday practice. The second is to use existing data from the literature and decision modelling to estimate the expected costs and outcomes of different alternatives. The first will increase generalizability to other patients than those in the trial and the second will increase generalizability from place to place. The objective and role of the evaluation will decide the most appropriate evaluation approach. Pragmatic trials should be used in studies where the objective is to provide measurements of costs and outcomes for a specific group of patients in a particular setting. This approach is highly relevant in telemedicine evaluations where the objective is to support local investments strategies and reimbursement systems. Decision modelling provides an overall structure for a decision problem and a formal analysis of the implications of different decisions. Modelling can simulate a trial or mimic a current system or a system that decision makers would like to use. Modelling is a useful approach when decisions need to be made about whether to invest in telemedicine within a broader context.