Effects of frequency and similarity neighborhoods on pharmacists' visual perception of drug names

To minimize drug name confusion errors, regulators, drug companies, and clinicians need tools that help them predict which names are most likely to be involved in confusions. Two experiments, carried out in the United States, examined the effects of stimulus frequency (i.e., how frequently a target name is prescribed), neighborhood frequency (i.e., how frequently prescribed are the "neighbors" of the target name), and neighborhood density (how many names are within a fixed distance of the target name) on the probability of pharmacists making an error in a visual perceptual identification task. In both experiments, the task was to correctly identify a series of blurry drug names after a 3s presentation on a computer monitor. In the first experiment, 45 pharmacists viewed 160 typewritten names, incorrectly identifying 60.6% of them. Random effects regression revealed a significant beneficial effect of stimulus frequency and a detrimental effect of neighborhood density. Significant two-way interactions were observed between stimulus frequency and neighborhood density and neighborhood frequency and neighborhood density. In the second experiment, 37 pharmacists viewed 156 handwritten drug names, incorrectly identifying 45.7%. Random effects regression revealed significant main effects of stimulus frequency and neighborhood density. These were contained within a significant three-way interaction: The interaction between stimulus frequency and neighborhood density was present at high but not low neighborhood frequency. Objectively measurable frequency and neighborhood characteristics have predictable effects on errors in pharmacists' visual perception. Organizations that coin and evaluate drug names, as well as hospitals, pharmacies, and health systems, should consider these characteristics when assessing visually confusing names.     

A move to electronic patient records in the community: a qualitative case study of a clinical data collection system, problems caused by inattention to users and human error

With the move toward electronic patient records, many U.K. National Health Service (NHS) Trusts are using computers to make their workforces more clinically effective. This article examines one such system where clinicians are using hand-held computers to maintain up-to-date records on their clients. The effectiveness of the system is measured using standard human computer interaction concepts. The results are considered, leading us to the conclusion that for the effective use of information technology, industry and the NHS must ensure that the whole lifecycle of a project is considered together with its impact on users and its integration with the rest of the information systems.     

Investigation of a computer virus outbreak in the pharmacy of a tertiary care teaching hospital.

OBJECTIVE: A computer virus outbreak was recognized, verified, defined, investigated, and controlled using an infection control approach. The pathogenesis and epidemiology of computer virus infection are reviewed. DESIGN: Case-control study. SETTING: Pharmacy of a tertiary care teaching institution. RESULTS: On October 28, 1991, 2 personal computers in the drug information center manifested symptoms consistent with the "Jerusalem" virus infection. The same day, a departmental personal computer began playing "Yankee Doodle," a sign of "Doodle" virus infection. An investigation of all departmental personal computers identified the "Stoned" virus in an additional personal computer. Controls were functioning virus-free personal computers within the department. Cases were associated with users who brought diskettes from outside the department (5/5 cases versus 5/13 controls, p = .04) and with College of Pharmacy student users (3/5 cases versus 0/13 controls, p = .012). The detection of a virus-infected diskette or personal computer was associated with the number of 5 1/4-inch diskettes in the files of personal computers, a surrogate for rate of media exchange (mean = 17.4 versus 152.5, p = .018, Wilcoxon rank sum test). After education of departmental personal computer users regarding appropriate computer hygiene and installation of virus protection software, no further spread of personal computer viruses occurred, although 2 additional Stoned-infected and 1 Jerusalem-infected diskettes were detected. CONCLUSIONS: We recommend that virus detection software be installed on personal computers where the interchange of diskettes among computers is necessary, that write-protect tabs be placed on all program master diskettes and data diskettes where data are being read and not written, that in the event of a computer virus outbreak, all available diskettes be quarantined and scanned by virus detection software, and to facilitate quarantine and scanning in an outbreak, that diskettes be stored in organized files.     

Drug interactions software programs

The value of a computer application is usually dependent on the program's ability to store, rearrange, and retrieve information in a format that is useful to the computer user. Based on a list of drugs (input), drug interactions programs search their databases for possible interactions between each drug pair in the input list. An output list specifies pairs of drugs that potentially interact. Since each program uses its own information database, results may differ slightly among programs. In general, however, the screen menus, appearance of the programs, and the "extras" included in each program differ more than the programs' drug interactions output. The software programs tested are all easy to use. Each of the three drug interactions programs reviewed has unique features that may appeal to certain users. The Medical Letter Drug Interactions Program is the least costly and provides the most academic output, allowing users to view citations for each specific interaction. The PDR Drug Interactions and Side Effects software includes a side effects index that allows either searching of a drug, which produces a list of the drug's side effects, or searching of a specific side effect, which produces a list of drugs associated with that side effect. Drug Interactions III is the only program that allows users to add drug interactions to its database.     

Contemporary issues in HIM. The application layer

In the early years of computing, manufacturers usually sold general purpose computer systems to their customers. These systems had only a minimal set of software components. End users normally would have to work with analysts, programmers, and operators to get applications developed and executed. Personal computers, workstations, or terminals connected to larger timeshared systems, are readily available to many computer users. Multitudes of new software packages allow these employees themselves to utilize computer resources. Such packages typically are grouped together as an application layer on top of the OS. In this article, we looked at one important component of that layer--information management systems. We will look at more applications in the next two articles.     

General practitioner's recognition of service cooperation with community pharmacists related to home care in a suburban area

OBJECTIVES: To clarify the factors affecting a general practitioner's demands and the recognition of service cooperation with community pharmacists related to home care in a suburban area. METHODS: A questionnaire on pharmacy services and functions was administered to 215 general practitioners in a suburban area. Gender, age, specialty, length of practice, status of home visiting, requests for community pharmacists, awareness of a home visiting service by community pharmacists, status of issues about home visiting orders to community pharmacists and the criteria for deciding to issue an order, recognition of the necessity of a home visiting service by pharmacists, expectation value to the community of the pharmacists' participation in the home care service and requests, recognition of cooperation with other home care related professions, ease of cooperation with community pharmacists, disincentives for cooperation with community pharmacists, factors necessary to promote cooperation between practitioners and community pharmacists, and factors necessary to promote the home care system were surveyed. Using the results, chi 2 test and principal component analysis were performed. RESULTS: It was found that the general practitioners' main demands were support and management of pharmaceutical therapy. Meanwhile, the practitioners' low cognition of pharmacists' home visiting seemed to be one disincentive to cooperation with pharmacists. Every practitioner who had issued visiting orders to pharmacists practiced home visiting and issued the visiting orders based on patients' condition at home. Practitioners who practiced home visiting were more active in promoting the home care system and had a better cognition and more extensive demands for pharmacists' home visiting compared to practitioners with no home visiting. Practitioners with good recognition of cooperation with community pharmacists had better cognition, realized the necessity of, and expected pharmacist's home visiting compared to practitioners with low awareness. However, practitioners' overall recognition of cooperation with pharmacists was relatively low. As disincentives, practitioners pointed out lack of acquaintance, the unclear function of pharmacists, and no opportunity for cooperation. So, enhancing practitioners' awareness of home care, clarifying the pharmacist's role, establishing a relationship of mutual trust through information feedback and/or exchange based on practice would be effective in promoting service cooperation with community pharmacists.     

A comprehensive system of pharmaceutical care for drug misusers

This article outlines the evolution of a community pharmacy-based supervised consumption of methadone program in Grater Glasgow. The formalization of this program in 1994 promoted full patient compliance with the methadone regimen and reduced seepage of the drug to the illicit market. 184 of the area's 215 community pharmacies now dispense methadone for the treatment of opiate dependence. Of these, 173 have a supplementary contract with the local health board to supervise the consumption of methadone on their premises. In addition 15 of "methadone" pharmacists are involved in the provision of a pharmacy based needle exchange scheme. This has been shown to be the most efficient and cost effective method of delivering clean injecting equipment to injecting drug users in the Greater Glasgow area. Glasgow's pharmacists' have now been involved in the methadone and needle exchange programs for more than ten years. The support needed by pharmacists and the steps that have been put in place to provide this level of commitment are described. The development of the Glasgow pharmacy based services to drug users has had a major impact on practice elsewhere in the United Kingdom.     

Ethical, religious and factual beliefs about the supply of emergency hormonal contraception by UK community pharmacists

BACKGROUND AND METHODOLOGY: Community pharmacists' role in the sale and supply of emergency hormonal contraception (EHC) represents an opportunity to increase EHC availability and utilise pharmacists' expertise but little is known about pharmacists' attendant ethical concerns. Semi-structured qualitative interviews were undertaken with 23 UK pharmacists to explore their views and ethical concerns about EHC. RESULTS: Dispensing EHC was ethically acceptable for almost all pharmacists but beliefs about selling EHC revealed three categories: pharmacists who sold EHC, respected women's autonomy and peers' conscientious objection but feared the consequences of limited EHC availability; contingently selling pharmacists who believed doctors should be first choice for EHC supply but who occasionally supplied and were influenced by women's ages, affluence and genuineness; non-selling pharmacists who believed EHC was abortion and who found selling EHC distressing and ethically problematic. Terminological/factual misunderstandings about EHC were common and discussing ethical issues was difficult for most pharmacists. Religion informed non-selling pharmacists' ethical decisions but other pharmacists prioritised professional responsibilities over their religion. DISCUSSION AND CONCLUSIONS: Pharmacists' ethical views on EHC and the influence of religion varied and, together with some pharmacists' reliance upon non-clinical factors, led to a potentially variable supply, which may threaten the prompt availability of EHC. Misunderstandings about EHC perpetuated lay beliefs and potentially threatened correct advice. The influence of subordination and non-selling pharmacists' dispensing EHC may also lead to variable supply and confusion amongst women. Training is needed to address both factual/terminological misunderstandings about EHC and to develop pharmacists' ethical understanding and responsibility.     

General practitioners' attitudes towards future developments in practice computing--a representative survey in the north of Germany.

A postal questionnaire was sent to a random sample of general practitioners in Lower Saxony, Germany to assess how general practitioners regard newly developed but not yet implemented options of practice computers and future applications such as expert systems and information retrieval systems. Replies were received from 276 (response rate 73.6%) general practitioners. Replying doctors were younger (P < 0.05) but they did not differ by sex, practice location, type of vocational training and grade of computerization from non-responding GPs. Twenty-eight per cent of the practices were computerized. Doctors who currently used a computer and those who intended to do so within the next 5 years were significantly younger than those doctors who did not intend to computerize their practice (P < 0.001). Female doctors were less willing to buy a computer than their male colleagues (P < 0.05). A computerized drug database and a medical library ranked best from 8 options given. Overall attitudes to all features were positive, except for an expert system giving criteria for referrals to specialist care. Doctors already working with a computer and those intending to buy one were significantly more positive about future options for computers than those doctors who do not intend to use a computer (P < 0.01). GPs' attitudes about new features of practice computers in general were positive but even more so about those options which are already available. Referral to a specialist seems to be a crucial point for GPs--they apparently do not want to be guided by a computer here.(ABSTRACT TRUNCATED AT 250 WORDS)     

Teledermatology in pharmacies: a pilot study

We investigated community pharmacists' management of skin conditions in order to identify a need for further educational support. Twenty community pharmacists in Queensland completed a questionnaire regarding their management of skin conditions and their opinions regarding the usefulness of a potential teledermatology service. The pharmacists' accuracy in managing skin conditions was tested by a dermatologist who reviewed the pharmacists' advice in 33 cases obtained by 14 pharmacists. Overall agreement between the pharmacists and the dermatologist was moderate, with a kappa statistic of 0.58 (P < 0.05) The uptake of a potential teledermatology service was investigated in one pharmacy over one month. Five patients were offered the teledermatology service. Of these, two patients consented and three refused. All pharmacists (n = 20) indicated a desire for further education and supported the idea of a teledermatology service.     

Computer usage and its relationship with adolescent lifestyle in Hong Kong.

PURPOSE: To determine the patterns of computer usage among adolescents in Hong Kong and to examine whether computer usage is associated with less physical activity and social support among adolescents. METHODS: A total of 2110 secondary school students (52% boys and 48% girls) in Hong Kong completed a set of questionnaires to measure their computer usage and lifestyle. Mean age of the respondents was 14.16 years (SD = 1.81 years). Computer usage was taped by asking the students to indicate how much time (in minutes) they spent on the computer each day for doing homework assignments; playing computer games; "surfing" the Internet; and communicating with others. The students also provided information on their social-physical lifestyle. Student's t-tests and analysis of variance were used to examine group differences. Pearson product moment correlations were used to explore relationships between computer usage and lifestyle. RESULTS: Boys who use computers for doing homework, "surfing" the Internet, and communicating with others engage in more social-physical activities than others. Boys who use computers to play games tend to be more social-behaviorally inactive. For girls, patterns of computer usage are not related to lifestyle. CONCLUSIONS: Computer users tended to engage in social-physical activities more frequently and had higher social support than nonusers. But among computer users, the amount of time spent daily on the computer was not associated with lifestyle. Instead, patterns of computer usage are more related to lifestyle and the relationship is moderated by gender.     

Characteristics of heroin and cocaine users unknown to treatment agencies. Results from the Swiss Hidden population study

The aim of this study was to compare the characteristics of heroin or cocaine users who are not in contact with drug-treatment agencies in Switzerland to the characteristics of a group who are in treatment. A sample of 917 users of heroin and/or cocaine was recruited outside treatment settings by 31 Privileged Access Interviewers. Respondents were divided into a study group of 512 heroin and/or cocaine users not following any treatment, and a control group of 238 users who were following treatment. Respondents in the no-treatment group use drugs less frequently, are less likely to inject drugs, have a more social pattern of use and more often have the impression of controlling their drug use. They have less contact with the legal system and the police, are in a better social situation and more often perceive themselves to be in good health. In both groups, respondents whose main drug of use is heroin generally have a more problematic pattern of use than those who use mainly cocaine. There are no significant differences between the two groups regarding present HIV-risk behaviour and prevention. The data show no significant association between the duration of use of heroin or cocaine and signs for problem use. These findings support the hypothesis that drug users not in treatment and drug users in treatment are two distinct populations, in terms of profile of drug use and prevalence of social or health problems that are associated to it.     

Introducing expert systems to medical students using esta, Expert System Teaching Aid

Medical students are allocated little curriculum time for exposure to expert systems. ESTA, a computer model of an expert system, was developed to make best use of this time. The nature of the students' interaction with ESTA is described, and their reactions to the expert system concepts and the place of expert systems in medicine are presented. A discussion of these reactions draws some conclusions about teaching expert systems in particular, and computers in general, in the basic medical course.     

Clinical decision support systems could be modified to reduce 'alert fatigue' while still minimizing the risk of litigation

Clinical decision support systems--interactive computer systems that help doctors make clinical choices--can reduce errors in drug prescribing by offering real-time alerts about possible adverse reactions. But physicians and other users often suffer "alert fatigue" caused by excessive numbers of warnings about items such as potentially dangerous drug interactions. As a result, they may pay less attention to or even ignore some vital alerts, thus limiting these systems' effectiveness. Designers and vendors sharply limit the ability to modify alert systems because they fear being exposed to liability if they permit removal of a warning that could have prevented a harmful prescribing error. Our analysis of product liability principles and existing research into the use of clinical decision support systems, however, finds that more finely tailored or parsimonious warnings could ease alert fatigue without imparting a high risk of litigation for vendors, purchasers, and users. Even so, to limit liability in this area, we recommend stronger government regulation of clinical decision support systems and development of international practice guidelines highlighting the most important warnings.     

How do desk-top computers affect the doctor-patient interaction

General practice consultations were video-recorded before andafter the introduction of a desk-top computer system into thepractice. The recordings were analysed by detailed qualitativescrutiny of tape and trancripts (conversation analysis) to discoverregular patterns of interaction. This analysis confirmed thatthe introduction of computers into the consultation had a significantimpact on the communication between patient and doctor. In particular,we found that computer technology has had an impact on the practitioners'conduct and on the disclosure of information by the patient.The analysis also points to some recommendations both for traininggeneral practitioners in the use of computerized systems inthe consultation, and for the (re)design of the technologiesthemselves.