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Sharing infobuttons to resolve clinicians' information needs.

Attempts to link clinical information systems to on-line information resources date back over a decade. The World Wide Web presents new opportunities to create such links, which we refer to as "infobuttons". This capability is partly due to the ease with which a link (called a Uniform Resource Locator, or URL) in one Web-based system can take users to another Web-based system, and partly due to the proliferation of high-quality Web-based resources. Typically, contextual information from the clinical system (such as patient data) is passed to a search engine that is evoked and, in turn, presents search results to the user. Impediments to infobutton development include customized programming to pass context information to the information resource, lack of standards for types and values of context information, variability of search engine interfaces, and a lack of understanding of clinicians' information needs. We are addressing these limitations with an Infobutton Manager (IM) that provides a standardized interface for matching user contexts to information resources.

Hospital Information Systems↗

Information for surgical patients: implications of the World Wide Web.

OBJECTIVE: To sample the amount and scope of information available on the internet about three common surgical conditions, identify the sources, and to examine the relevance of the web to the surgical community. DESIGN: Internet search. SETTING: General hospital, Republic of Ireland. MATERIAL: Three arbitrarily chosen conditions were sought--varicose veins, inguinal hernia, and gallstones. Four commonly used search engines--Yahoo, Altavista, Excite and Lycos, were used to search worldwide, and then sites restricted to the UK and Republic of Ireland. MAIN OUTCOME MEASURES: Quality and quantity of information available. RESULTS: All four search engines retrieved patient-orientated information on the three conditions. The sites accessed from the web page matches generally presented a comprehensive summary of the condition including aetiology, risk factors and clinical features, but gave variable amounts of information on treatment options, surgical complications, comparisons between treatments, and expected outcomes. Online health magazines provided most of the information sites. CONCLUSION: The internet offers easily-accessible patient-orientated information. Surgeons should make more use of it to satisfy patients' increasing need for information.

Cholelithiasis↗

Expert googling: best practices and advanced strategies for using google in health sciences libraries.

Google is the search engine of choice for most Internet users. For a variety of reasons, librarians and other expert searchers do not always use Google to its full potential, even though it provides capabilities not possible in traditional bibliographic databases and other search engines. Applying expert searching principles and practices, such as the use of advanced search operators, information retrieval strategies, and search hedges to Google will allow health sciences librarians to find quality information on the Internet more efficiently and effectively.

Information Storage and Retrieval↗

Successful web searching.

This section of the series introduces the topic of WWW search engines and directory sites; showing you how to find information using a search engine and a directory. It also covers other ways of searching for information on the internet.

Dentistry↗

[Analysis of paediatric neuro-oncological information on the Internet in German language].

BACKGROUND: The fast growing internet offers easy access to medical information. So far there are limited data concerning the quality of this information. This study examined quality and readability of paediatric neuro-oncological information on the internet in german language. METHOD: Using the search terms "medulloblastoma", "ependymoma", "craniopharyngeoma", "brainstem glioma" and "low grade astrocytoma" in six different search engines, the first 30 universal/uniform resource locators (URLs) of each search engine were assessed. Appropriate Web sites were evaluated in regards to quality using DISCERN-Instrument and checklist rating system. Readability was rated by Flesch Reading Ease score. RESULTS: Out of 889,56 web sites remained evaluable. Most of the sites rated as poor to very poor (49 %), 30 % rated as fair and 21 % as good to very good. Readability was scored as very difficult with complex vocabulary content limiting the usefulness of good web sites. CONCLUSIONS: Search-ing for childhood brain tumours via internet is time consuming and most often ineffective. There is a lack of high-quality and comprehensible information on childhood brain tumours on german web sites. Cooperation of scientific medical societies and the Federal Ministry of Health is essential to provide comprehensible and high-quality information on internet as an effective and supportive resource for patients and their relatives.

Age Factors↗

An evaluation of the quality and contents of asthma education on the World Wide Web.

STUDY OBJECTIVES: To measure the accessibility and quality of currently available asthma education World Wide Web sites using the following criteria: accessibility by readability, language, and download time; information quality based on inclusion of core educational concepts and compliance with Health On the Net (HON) principles; and utilization of innovative technology. DESIGN: Objective evaluation of 145 Web sites. MEASUREMENTS AND RESULTS: Four search engines or directories (Yahoo, HON, Alta Vista, and Healthfinder) were searched for "asthma, patient information." A maximum of 50 Web sites from each search engine or directory was evaluated. Only 90 of the 145 Web sites actually contained asthma educational material. The mean (+/- SD) time necessary to open each Web site on a 28.800-bits-per-second modem was 33.6 ( +/- 36.6) s. The mean number of graphics on the Web sites was 24.6 ( +/- 30.2) files per page. The educational material required a mean reading level beyond the 10th grade. Only nine Web sites contained multilingual asthma education material. The mean number of HON principles with which the Web sites conformed was 6.3 ( +/- 1.0) of 8 principles; 14 Web sites conformed to all the HON criteria. The average Web site contained 4.9 (+/- 2.5) of 8 core asthma educational concepts, and only 20 Web sites contained all 8 educational concepts. Very few Web sites utilized innovative educational technology. CONCLUSIONS: While patient asthma education Web sites are common, asthma educational material contains many accessibility barriers, is highly variable in quality and content, and takes little innovative use of technology. Patient educational material currently available on the World Wide Web fails to meet the information needs of patients.

Asthma↗

[Effective use of medical-scientific internet resources].

PROBLEM: The Internet is not structured hierarchically and therefore it distinguishes from today's common knowledge sources. The rapidly growing number of medical websites offers comprehensive but not easy to find information resources and continuing education opportunities for ophthalmologists. METHODS AND RESULTS: The efficiency of an Internet search is related to knowledge about existing search strategies. Several search systems are described (search engines, catalogs, databases, indices, etc.). Additional advice about efficient usage (Meta-Search, use of Boolean operators, phrase search, etc.) is provided. The suggested search strategies are evaluated regarding their specific results, update status, and the usability of search engines used. New applications such as SemioMap and Intelligent Agents are described. CONCLUSION: Today the Internet provides practitioners and scientists who are able to use efficient search strategies with easy and fast to use information resources. The total number of scientific-medical documents on the Web is growing very quickly. More and more, their content is related to current problems in patient treatment and future trends in clinical research.

Education, Medical, Continuing↗

Surfing for scoliosis: the quality of information available on the Internet.

STUDY DESIGN: A cross section of Web sites accessible to the general public was surveyed. OBJECTIVE: To evaluate the quality and accuracy of information on scoliosis that a patient might access on the Internet. SUMMARY OF BACKGROUND DATA: The Internet is a rapidly expanding communications network with an estimated 765 million users worldwide by the year 2005. Medical information is one of the most common sources of inquires on the Web. More than 100 million Americans accessed the Internet for medical information in the year 2000. Undoubtedly, the use of the Internet for patient information needs will continue to expand as Internet access becomes more readily available. This expansion combined with the Internet's poorly regulated format can lead to problems in the quality of information available. Since the Internet operates on a global scale, implementing and enforcing standards have been difficult. The largely uncontrolled information can potentially negatively influence consumer health outcomes. METHODS: To identify potential sites, five search engines were selected and the word "scoliosis" was entered into each search engine. A total of 50 Web sites were chosen for review. Each Web site was evaluated according to the type of Web site, quality content, and informational accuracy by three board-certified academic orthopedic surgeons, fellowship trained in spinal surgery, who each has been in practice for a minimum of 8 years. Each Web site was categorized as academic, commercial, physician, nonphysician health professional, and unidentified. In addition, each Web site was evaluated according to scoliosis-specific content using a point value system of 32 disease-specific key words pertinent to the care of scoliosis on an ordinal scale. A list of these words is given. Point values were given for the use of key words related to disease summary, classifications, treatment options, and complications. The accuracy of the individual Web site was evaluated by each spine surgeon using a scale of 1 to 4. A score of 1 represents that the examiner agreed with less than 25% of the information while a score of 4 represents greater than 75% agreement. RESULTS: Of the total 50 Web sites evaluated, 44% were academic, 18% were physician based, 16% were commercial, 12% were unidentified, and 10% were nonphysician health professionals. The quality content score (maximum, 32 points) for academic sites was 12.6 +/- 3.8, physician sites 11.3 +/- 4.0, commercial sites 11 +/- 4.2, unidentified 7.6 +/- 3.9, and nonphysician health professional site 7.0 +/- 1.8. The accuracy score (maximum, 12 points) was 6.6 +/- 2.4 for academic sites, 6.3 +/- 3.0 for physician-professional sites, 6.0 +/- 2.7 for unidentified sites, 5.5 +/- 3.8 for nonphysician professional sites, and 5.0 +/- 1.5 for commercial Web sites. The academic Web sites had the highest mean scores in both quality and accuracy content scores. CONCLUSION: The information about scoliosis on the Internet is of limited quality and poor information value. Although the majority of the Web sites were academic, the content quality and accuracy scores were still poor. The lowest scoring Web sites were the nonphysician professionals and the unidentified sites, which were often message boards. Overall, the highest scoring Web site related to both quality and accuracy of information was www.srs.org. This Web site was designed by the Scoliosis Research Society. The public and the medical communities need to be aware of these existing limitations of the Internet. Based on our review, the physician must assume primary responsibility of educating and counseling their patients.

Cross-Sectional Studies↗

Advancing proteomic discovery through optimized multi-stage scoring and deep learning-enhanced open search.

MOTIVATION: Protein search engines are essential for interpreting mass spectrometry data into biological insight. Current tools often face limitations in sensitivity when analyzing complex modern datasets, and lack a unified framework that effectively integrates deep learning features for both restricted and open searches, especially for scenarios aimed at discovering unknown modifications. RESULTS: We present pFind+, a high-performance search engine for data-dependent acquisition (DDA) proteomics, extending pFind. It introduces an enhanced raw scoring that delivers substantially improved pre-filtering ability, while recovering most of the computational overhead through a tailored acceleration strategy. Coupled with an enhanced rescoring framework that effectively integrates deep learning features, pFind+ uniquely supports high-sensitivity, DL-enhanced open search, enabling comprehensive PTM discovery while incorporating hardware-aware inference optimizations for practical deployment. Evaluations across diverse datasets demonstrate its superior sensitivity, with gains of 12.7%-29.3% (average 17.9%) in restricted search and 8.0%-38.4% (average 25.8%) in open search over the best existing tools.

Deep Learning↗

Intensity-modulated radiotherapy and the Internet.

BACKGROUND: The objective of the current study was to evaluate the content and quality of patient-oriented information regarding intensity-modulated radiotherapy (IMRT) on the Internet. METHODS: IMRT websites were identified by reviewing the first 50 uniform resource locators on 5 search engines using the search terms IMRT and intensity modulated radiation therapy. Each site was evaluated by three observers for informational content, presentation, accuracy, and balance. A score of low, moderate, or high was assigned to each category based on a predefined scoring system. An overall score was assigned to each site, ranging from -35 to 100 points. RESULTS: Seventy-seven patient-oriented IMRT websites were identified (45% private, 21% academic, and 18% commercial). Most sites (58%) had a low level of informational content, with information on fundamental aspects of IMRT planning (target delineation and inverse planning) appearing on < 50% of sites. The most commonly discussed tumors were genitourinary (65%) and head and neck (53%) lesions. Few sites, however, described the potential benefits of IMRT (toxicity and tumor control). Most sites (82%) used patient-appropriate language. False and/or misleading information was seen on 42% of sites and was equally common on academic, private, and commercial sites. Balance statements were present on 24% of sites (most of which were commercial). The median overall score was 20 points (range, -25 to 70 points). The median overall scores for academic, private, commercial, and other sites were 10, 20, 25, and 20 points, respectively (P = 0.26). CONCLUSIONS: In general, the content and quality of patient-oriented information regarding IMRT on the Internet were poor. Patients and their physicians need to be aware of these problems when selecting treatment courses.

Humans↗

Evaluation of algorithms for protein identification from sequence databases using mass spectrometry data.

In this work, the commonly used algorithms for mass spectrometry based protein identification, Mascot, MS-Fit, ProFound and SEQUEST, were studied in respect to the selectivity and sensitivity of their searches. The influence of various search parameters were also investigated. Approximately 6600 searches were performed using different search engines with several search parameters to establish a statistical basis. The applied mass spectrometric data set was chosen from a current proteome study. The huge amount of data could only be handled with computational assistance. We present a software solution for fully automated triggering of several peptide mass fingerprinting (PMF) and peptide fragmentation fingerprinting (PFF) algorithms. The development of this high-throughput method made an intensive evaluation based on data acquired in a typical proteome project possible. Previous evaluations of PMF and PFF algorithms were mainly based on simulations.

Algorithms↗

Trends in medical information retrieval on Internet.

Information on the World Wide Web is unstructured, distributed, multimedia and multilingual. Many tools have been developed to help users search for useful information: subject hierarchies, general search engines, browsers and search assistants. Although helpful, they present serious limitations, mainly in terms of precision, multilingual indexing and distribution. In this paper, we cover some on-line solutions to medical information discovery and present our own approach, the MARVIN (multi-agent retrieval vagabond on information network) project, which tackles medical information research with specialized cooperative retrieval agents. We also draw some outlines for future extensions.

Computer Systems↗

Tolerability and adherence issues in antidepressant therapy.

BACKGROUND: Despite the availability of effective antidepressants, recurrence and relapse rates for depression are high (up to 80%), treatment failures are common (40% to 60%), and as many as 20% of patients remain inadequately treated. Depression treatment guidelines are often not followed, and rates of nonadherence to treatment are high, with 28% of patients discontinuing antidepressant treatment within the first month and 44% discontinuing within 3 months of initiating therapy. OBJECTIVE: The aim of this article was to summarize research on antidepressant therapy nonadherence and examine the limitations of strategies used to minimize adverse events (AEs) and improve treatment duration. METHODS: A thorough search of the published literature from 1990 to the present was performed on MEDLINE and other search engines. The following search terms were used: tolerability, antidepressants, patient compliance, adherence, therapy, SSRIs, tricyclics, and other related terms focusing on specific agents. RESULTS: Physician-specific issues represent some of the most important obstacles to adequate antidepressant therapy. Inadequate patient education, prescription of inappropriate medications or inadequate dosages, and lack of follow-up care are all issues the physician can control to improve patient adherence. Patient-specific issues include poor motivation (due to symptoms of depression) to continue therapy, failure to perceive a benefit, and concerns about cost of therapy. Medication-specific issues such as treatment-related AEs, delayed onset of action, complicated dosing or titration schedule, and subtherapeutic dosing also contribute to treatment discontinuation. Therapy with >/=I antidepressant and/or atypical antipsychotic may improve symptom control, but little evidence exists regarding efficacy and safety. Dosage reduction has been attempted to reduce events that may lead to patient discontinuation, but this may increase the risk of recurrent depressive episodes. CONCLUSIONS: To maximize patient adherence to antidepressant therapy, it is necessary to combine adequate treatment duration, realistic patient expectations, and the right dose of an agent capable of treating the full range of symptoms while controlling for AEs.

Antidepressive Agents↗

[Use of a directory of specialized services and guidance in the healthcare system: the example of the Orphanet database for rare diseases].

BACKGROUND: Orphanet is a database of rare diseases which includes a directory of services providing information on professional experts working either in laboratories offering diagnostic tests or in specialized outpatient clinics. The printed directory is sent to these experts, to all relevant hospital departments (public and private), healthcare authorities, and patient support groups. The directory is also available online (www.orpha.net). The aims of this study were (i) to determine how the directory is used to refer patients and send specimens, and (ii) to investigate its impact on patient referral. METHODS: Data were obtained from experts and patient support groups concerned with rare diseases, as well from non-expert health professionals and patients. Emphasis was placed on knowledge of the Orphanet database, use of the directory as a tool for referrals, opinion of users about the quality of the directory, and opinion of the referenced experts about its possible impact on their referrals. Four methods of data collection were used: (i) a postal questionnaire to all referenced experts; (ii) an on-line questionnaire posted for a few hours on the Orphanet Website that had to be completed to access the site; (iii) interviews with 25 of the referenced experts; (iv) interviews with 35 leaders of patient organizations. Data were analysed using the chi2 test and logistic regression. RESULTS: Response rates were good: 74% of laboratory experts (224/304) and 68% of clinicians (459/678) answered the questionnaire. The responders proved to be representative. Among those who responded, 85% of the laboratory experts and 80% of clinician experts used Orphanet. More than two-thirds of them used Orphanet to identify (other) laboratories to them send specimens, and (other) clinicians for patient referral. Some non-expert hospital-based clinicians had nearly the same use. Patient support groups also used the directory. Persons using the directory happened to know Orphanet in their professional environment. Conversely, patients, non-MDs healthcare professionals and professionals in private practice discovered Orphanet using search engines, often when searching information about a rare disease. Of those who had already accessed the directory, most (94%) consider that the quality of the lists was "good" or" rather good". Among the experts, 29% of laboratories and 9% of clinicians considered that Orphanet had an impact on their referrals. CONCLUSION: The Orphanet directory is used to refer patients and specimens, especially by experts and patient organizations. It appears to have more impact on referrals within the healthcare system for laboratories than for specialized outpatient clinics. The impact is strong when expertise in the field is very scarce.

Databases as Topic↗

Computers and the Internet: tools for lifelong learning.

Mastery of computer technology and the resources it brings to renal dietitians will be essential for future practice. The Internet, probably the most valuable resource computers bring to clinical practice, is a potential tool to fulfill goals of lifelong learning. A basic introduction to the Internet and a review of search engines and successful search strategies are provided. Major flaws of the Internet include uncertain quality and accuracy of many materials it provides. Guidelines to evaluate World Wide Web (WWW) materials are similar to guidelines dietitians use to assess written materials. The identification of certain anchor WWW sites with reliable information is a key to successful information retrieval on the Internet.

Computers↗

A survey of the quality of web based information on the treatment of schizophrenia and Attention Deficit Hyperactivity Disorder.

OBJECTIVE: To systematically assess the quality, accountability and readability of Internet information on the treatment of schizophrenia and Attention Deficit Hyperactivity Disorder (ADHD), using a standardized pro forma. METHOD: We analysed the 20 most highly ranked pages on the treatment of ADHD and schizophrenia, identified by five common Internet search engines. RESULTS: There was little overlap in the sites identified by different search engines. In the case of schizophrenia, one site was identified three times and another eight sites twice; while for ADHD four sites were identified twice. Accountability (Silberg score), presentation and readability, as assessed by the Flesch-Kincaid Grade Level score, were poor. Mean Silberg, presentation and Flesch-Kincaid Grade Level scores were 3.2 (range 0-9) out of 9, 1.9 (range 0-4) out of 4, and 11.5 (range 6.5-12.25), respectively. There was no statistical difference in scores between the two diagnoses. Depending on the recommendation, agreement with evidence-based practice for schizophrenia ranged from only 2 to 55% (mean = 2.8 (range 0-9) out of 12), while that for ADHD was from 14 to 54% (mean = 1.6 (range 0-6) out of 6). Only 50% of the sites advised readers to clarify information with an appropriate health professional. Interrater reliability in pro forma scores for schizophrenia and ADHD was high (r = 0.96 and 0.95, respectively, p < 0.0001). Sites in the top 10% of scores were significantly more likely to be owned by an organization or have an editorial board than those in the bottom 10%. CONCLUSIONS: The Internet contains misleading information on both schizophrenia and ADHD. The methodology used in this paper could be adapted for other psychiatric conditions.

Attention Deficit Disorder with Hyperactivity↗

Formation of epsilon-formyllysine on silver-stained proteins: implications for assignment of isobaric dimethylation sites by tandem mass spectrometry.

Considerable effort is focused presently on the detection and comprehensive assignment of post-translational modifications of proteins. Obviously attention must be paid to the possibility of chemical modifications that may occur to protein samples during sample handling and manipulation prior to analysis by tandem mass spectrometry. This is of particular concern when a modification is isobaric with the mass differential in common with a known post-translational analog. Here we provide evidence that silver staining protocols that use formaldehyde can result in epsilon-formylation of lysine residues. This modification is in fact isobaric with the important product of methyltransferases, epsilon,epsilon-dimethyllysine. Without exercising proper caution the analysis of silver-stained protein samples by mass spectrometry looking for dimethylation of lysine will yield a significant number of misassigned sites of modification. High accuracy measurements of the mass of the precursor ions and their fragments are required to eliminate this uncertainty. The occurrence of dimethylation of the epsilon-amino function of lysine residues has been reported often in histones. For histone samples excised from silver-stained gels, we found that most sites initially assigned to be dimethylated by automatic search engines under standard search parameters (100 ppm error tolerance) are actually in fact formylated. Caution must be exercised when data obtained from instruments unable to perform high accuracy mass measurements (better than 5 ppm) are to be interpreted.

Amino Acid Sequence↗

Quality of arthritis information on the Internet.

PURPOSE: The quality and reliability of Internet-based arthritis information were studied. METHODS: The search terms "arthritis," "osteoarthritis," and 'rheumatoid arthritis" were entered into the AOL, MSN, Yahoo, Google, and Lycos search engines. The Web sites for the first 40 matches generated by each search engine were grouped by URL suffix and evaluated on the basis of four categories of criteria: disease and medication information content, Web-site navigability, required literacy level, and currentness of information. Ratings were assigned by using an assessment tool derived from published literature (maximum score of 15 points). RESULTS: Of the 600 arthritis Web sites identified, only 69 were unique and included in the analysis. Fifty-seven percent were .com sites, 20% .org sites, 7% .gov sites, 6% .edu sites, and 10% other sites. Total scores for individual sites reviewed ranged from 3 to 14. Eighty percent of .gov sites, 75% of .edu sites, 29% of other sites, 36% of .com sites, and 21% of .org sites were within the top tertile of scores. No Web site met the criterion for being understandable to people with no more than a sixth-grade reading ability. .Gov sites scored significantly higher overall than .com sites, .org sites, and other sites. .Edu sites also scored relatively well. CONCLUSION: The quality of arthritis information on the Internet varied widely. Sites with URLs having suffixes of .gov and .edu were ranked higher than other types of sites.

Arthritis↗