Background: Although irritable bowel syndrome (IBS) is not a life-threatening condition, it can have a serious impact on a patient’s daily activities and quality of life. This effect on quality of life has not been compared previously across different cultures. Methods: We compared measures of health-related quality of life and health care resource utilization using a cross-sectional point-in-time postal survey of a random sample of 500 members of the International Foundation for Functional Gastrointestinal Disorders in the US and 500 members of the IBS Network support group in the UK. The analysis was limited to persons who reported that a physician had told them they had IBS. A general health status questionnaire, the SF-36, and a disease-specific questionnaire, the Irritable Bowel Syndrome Quality of Life questionnaire (IBSQOL), were self-administered as part of the survey to measure health-related quality of life. Results on the SF-36 were compared with published normative data for adults in the US and UK with and without chronic diseases. Results: The UK group (n = 343) reported significantly poorer quality of life on the SF-36 and on four parameters of the IBSQOL than did the US group (n = 287). The general health status of persons with IBS in either country was much poorer compared with that of general populations in the respective countries. Health care resource utilization (i.e. emergency room, doctor and hospital outpatient visits) of persons with IBS was similar in the two countries, as was the direct effect of IBS on employment. Nearly one third of those surveyed missed at least 1 day of work due to IBS in the previous 4 weeks, and a greater percentage cut back in their work or activites due to IBS. Taken together, average time lost or cut back amounted to nearly 5 days or 1 work-week. Conclusion: IBS has a significant impact on quality of life and resource use in both the US and UK. The effect on quality of life, however, appears to be greater in the UK than in the US.
Aim: In this study of patients with irritable bowel syndrome (IBS), we evaluated the relationship between patient‐rated severity of IBS and patients' physical and psychological symptoms, health care resource use and quality of life. Methods: One hundred and twenty‐six patients diagnosed with IBS were administered a series of questionnaires, including the Bowel Symptom Checklist, the Symptom Checklist‐90 R (a psychological symptom checklist), the IBSQOL (a disease‐specific quality of life instrument), the SF‐36 (a general health status instrument), and a health resource utilization assessment that measured health care use, time loss from work, impact on productivity, and days worked with symptoms. Results: No relationship was found between IBS severity and gastrointestinal symptoms, except for a feeling of unpassed stool. IBS severity was also not related to psychological symptom severity. Direct traditional indicators of resource use (e.g. physician visits, hospital admissions and emergency room visits) were not significantly associated by severity level; however, indirect measures of resource use (e.g. number of days with pain, productivity and number of bed days) were related to severity. Quality of life was clearly associated with perceived IBS severity. Patients who rated themselves as very severe reported the lowest scores and had the poorest health for all quality of life dimensions measured. Conclusions: These findings suggest that perceived IBS severity is defined by the limitations the disease imposes, rather than by the symptoms. Patients with reduced productivity and decreased functioning for most of the quality of life indicators were those who rated their IBS as very severe.
Background: We describe the development and evaluation of a new disease‐specific instrument, the Irritable Bowel Syndrome Quality of Life Questionnaire (IBSQOL), which was designed for use in patients with irritable bowel syndrome. The IBSQOL measures 10 domains found to be relevant to patients with irritable bowel syndrome: emotional health, mental health, health belief, sleep, energy, physical functioning, diet, social role, physical role, and sexual relations. Methods: During its development and evaluation, the IBSQOL was administered to over 500 patients with irritable bowel syndrome—two groups of patients from tertiary care centres, three focus groups of 8–12 patients each, and 287 patients in a national irritable bowel syndrome support network. As a control, the IBSQOL was also administered to 37 patients who did not have irritable bowel syndrome but had other gastrointestinal disorders. Statistical analyses to test the reliability and validity of the IBSQOL were performed using Cronbach's α coefficient. Results: Responses from the focus groups indicated that the IBSQOL was easy to complete and did not require too much time to fill out (≈ 25 min). Statistical analyses of the final 30‐item version of the IBSQOL demonstrated that it had both adequate validity and reliability (α ≥ 0.60). A comparison of mean IBSQOL scores of persons with and without irritable bowel syndrome (but with other gastrointestinal conditions) showed no difference between the two groups with irritable bowel syndrome; however, scores for both irritable bowel syndrome groups were considerably lower than for the non‐irritable bowel syndrome group, suggesting better health‐related quality of life in patients who do not have irritable bowel syndrome. This further demonstrated the validity of the IBSQOL in targeting questions and domains specific to patients with irritable bowel syndrome. Conclusions: Evaluation of the IBSQOL included testing the questionnaire in a large number of patients, which resulted in a revised and well‐constructed instrument that demonstrated both adequate validity and reliability. The IBSQOL is currently being used in large‐scale clinical trials to measure changes in quality of life in patients with irritable bowel syndrome following treatment intervention.
Failed therapy with clarithromycin-based regimens is a growing cause of antimicrobial resistance in H. pylori in the United States. Whereas the overall rates of primary resistance are low, the increase in secondary resistance over a short period of time is worrisome. New treatments that prevent the emergence of resistance may be important in the future.
Monitoring is an essential component of wildlife management and conservation. However, the usefulness of monitoring data is often undermined by the lack of 1) coordination across organizations and regions, 2) meaningful management and conservation objectives, and 3) rigorous sampling designs. Although many improvements to avian monitoring have been discussed, the recommendations have been slow to emerge in large-scale programs. We introduce the Integrated Monitoring in Bird Conservation Regions (IMBCR) program designed to overcome the above limitations. Our objectives are to outline the development of a statistically defensible sampling design to increase the value of large-scale monitoring data and provide example applications to demonstrate the ability of the design to meet multiple conservation and management objectives. We outline the sampling process for the IMBCR program with a focus on the Badlands and Prairies Bird Conservation Region (BCR 17). We provide two examples for the Brewer’s sparrow (Spizella breweri) in BCR 17 demonstrating the ability of the design to 1) determine hierarchical population responses to landscape change and 2) estimate hierarchical habitat relationships to predict the response of the Brewer’s sparrow to conservation efforts at multiple spatial scales. The collaboration across organizations and regions provided economy of scale by leveraging a common data platform over large spatial scales to promote the efficient use of monitoring resources. We designed the IMBCR program to address the information needs and core conservation and management objectives of the participating partner organizations. Although it has been argued that probabilistic sampling designs are not practical for large-scale monitoring, the IMBCR program provides a precedent for implementing a statistically defensible sampling design from local to bioregional scales. We demonstrate that integrating conservation and management objectives with rigorous statistical design and analyses ensures reliable knowledge about bird populations that is relevant and integral to bird conservation at multiple scales.
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