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Biomedical subjects

Steven Vogel

Publications and source records attributed to Steven Vogel.

At least 19 recordsLinked to original sources
PubMed2006

Attitudes to back pain amongst musculoskeletal practitioners: a comparison of professional groups and practice settings using the ABS-mp.

Chiropractors, osteopaths and physiotherapists play key roles in the management of low back pain (LBP) patients in the UK. We investigated the attitudes of these three professional groups to back pain using a recently developed and validated questionnaire, the Attitudes to Back Pain Scale for musculoskeletal practitioners (ABS-mp). A cross-sectional questionnaire survey was sent to 300 of each professional group (n=900). Responses were analysed from 465 practitioners: 132 chiropractors (28%), 159 osteopaths (34%) and 174 physiotherapists (37%). Overall, all three groups endorse a psychosocial approach to treatment, and see re-activation as a primary goal. However, physiotherapists and osteopaths tend to endorse attitudes towards limiting the number of treatment sessions offered to LBP patients more than chiropractors, and chiropractors endorse a more biomedical approach than physiotherapists. When practice setting (NHS versus private practice) was considered (in physiotherapists alone), physiotherapists working for the NHS endorsed limiting the number of treatment sessions more than those working in the private sector and would also less frequently advise their patients to restrict activities and be vigilant. The results may help explain current clinical practice patterns observed in these groups and their uptake of clinical guideline recommendations.

Adult↗
PubMed2006

Measuring troublesomeness of chronic pain by location.

BACKGROUND: Current measures of pain assess the relative contribution of pain in different body regions to the overall impact of pain. We developed a series of questions to measure the relative 'troublesomeness' of pain in different body regions (the "troublesomeness grid"). The study aimed to determine whether the "troublesomeness grid" is an appropriate measure to assess the severity of pain in different body regions, allowing the comparative severity of pain in different body regions to be assessed. METHODS: We used data from a pilot for a population survey of pain (N = 205) and from the population survey itself (N = 2504) to assess the 'troublesomeness grid's performance. Specifically, its face and content validity using overall and item non-completion rates; its criterion related validity by exploring the relationship between troublesomeness and standard measures of pain, disability, distress and health utility for the five body regions most commonly affected by chronic pain; and its reliability and reproducibility in a test/re-test study. RESULTS: The troublesomeness grid appeared to have good face validity as it had good completion rates. It also appeared to have good content validity as the percentage agreement between the grid and the pain manikin was high (over 90%). In terms of criterion related validity, troublesomeness was most strongly correlated with pain intensity and health related quality of life, but less with disability and distress. The test-retest reliability was between 80% and 90% for the majority of body regions examined. CONCLUSION: The troublesomeness grid is well completed and appears to be an appropriate tool to assess the comparative severity of pain in different body regions.

Chronic Disease↗
PubMed2006

Fear avoidance and prognosis in back pain: a systematic review and synthesis of current evidence.

OBJECTIVE: Fear of pain, which is hypothesized to result in avoidance behavior, has been described as an obstacle to recovery in populations of patients with low back pain. However, the evidence to support the link between high levels of fear at early stages of pain and poor prognosis has yet to be systematically assessed. We undertook this review to explore current evidence and to propose further development of theoretical models. METHODS: We performed a systematic literature review of all prospective inception cohorts of patients with acute low back pain that measured fear of pain (often described as fear avoidance) at baseline. RESULTS: We reviewed 9 studies reported between 2001 and 2006. Several of these had acceptable/good methodology. Three studies, of which at least 1 had excellent methodology, showed no link between measures of fear at baseline and poor prognosis in the short term (3 months) or the long term (12 months). Three studies with acceptable methodology showed weak evidence for such a link, but the effect sizes were small. The only study with acceptable methodology to find a clear link suggested that fear of movement was linked to long-term pain. CONCLUSION: Despite the prevalent focus on fear of pain at early stages of back pain, there is little evidence to link such fear states with poor prognosis. There is some evidence to suggest that fear may play a role when pain has become persistent. There is a growing consensus that distress/depression plays an important role at early stages, and clinicians should focus on these factors.

Avoidance Learning↗
PubMed2006

Persistent back pain--why do physical therapy clinicians continue treatment? A mixed methods study of chiropractors, osteopaths and physiotherapists.

AIMS: (a) To investigate how widespread is the use of long term treatment without improvement amongst clinicians treating individuals with low back pain. (b) To study the beliefs behind the reasons why chiropractors, osteopaths and physiotherapists continue to treat people whose low back pain appears not to be improving. METHODS: A mixed methods study, including a questionnaire survey and qualitative analysis of semi-structured interviews. Questionnaire survey; 354/600 (59%) clinicians equally distributed between chiropractic, osteopathy and physiotherapy professions. Interview study; a purposive sample of fourteen clinicians from each profession identified from the survey responses. Methodological techniques ranged from grounded theory analysis to sorting of categories by both the research team and the subjects themselves. RESULTS: At least 10% of each of the professions reported that they continued to treat patients with low back pain who showed almost no improvement for over three months. There is some indication that this is an underestimate. reasons for continuing unsuccessful management of low back pain were not found to be primarily monetary in nature; rather it appears to have much more to do with the scope of care that extends beyond issues addressed in the current physical therapy guidelines. The interview data showed that clinicians viewed their role as including health education and counselling rather than a 'cure or refer' approach. Additionally, participants raised concerns that discharging patients from their care meant sending them to into a therapeutic void. CONCLUSION: Long-term treatment of patients with low back pain without objective signs of improvement is an established practice in a minority of clinicians studied. This approach contrasts with clinical guidelines that encourage self-management, reassurance, re-activation, and involvement of multidisciplinary teams for patients who do not recover. Some of the rationale provided makes a strong case for ongoing contact. However, the practice is also maintained through poor communication with other professions and mistrust of the healthcare system.

Allied Health Personnel↗
PubMed2006

The attitudes to back pain scale in musculoskeletal practitioners (ABS-mp): the development and testing of a new questionnaire.

OBJECTIVES: Little is known about practitioners' beliefs and attitudes to the treatment of low back pain, and whether these influence their clinical decisions, intervention strategies, and patient-centered outcomes. This study aimed to develop, test, and explore the underlying dimensions of a new questionnaire, the Attitudes to Back Pain Scale (ABS), in a specific group of clinicians, practitioners who specialize in musculoskeletal therapy. METHODS: Items for the draft questionnaire were derived from interviews with practitioners (chiropractors, osteopaths, and physiotherapists). The draft questionnaire (52 items) sought to assess practitioners' attitudes concerning role and self-image plus their beliefs about treatment goals and prognosis of low back pain. The questionnaire was sent to a random selection of 300 practitioners from each professional group, and 546 (61%) responded. Split-sample analyses were performed using exploratory and confirmatory factor analysis. RESULTS: Separate exploratory analyses were done for attitudes concerned with personal interaction (34 items) and attitudes about treatment orientation (18 items), producing six domains: limitations on sessions, psychologic, connection to health care system, confidence and concern, reactivation, and biomedical. Confirmatory analyses indicated that the model tested presented a good fit. Validity interviews revealed high agreement of categorization and low levels of difficulty in categorizing the items. CONCLUSIONS: The internal structure of the new questionnaire not only shows excellent psychometric properties and good face validity, but also has the added advantage of being developed with a specific clinical context in mind. Additional evaluation is required to fully describe the psychometric integrity of this instrument.

Adult↗
PubMed2005

Testing the effectiveness of an innovative information package on practitioner reported behaviour and beliefs: the UK Chiropractors, Osteopaths and Musculoskeletal Physiotherapists Low back pain ManagemENT (COMPLeMENT) trial [ISRCTN77245761].

BACKGROUND: Low back pain (LBP) is a common and costly problem. Initiatives designed to assist practitioner and patient decisions about appropriate healthcare for LBP include printed evidence-based clinical guidelines. The three professional groups of chiropractic, osteopathy and musculoskeletal physiotherapy in the UK share common ground with their approaches to managing LBP and are amongst those targeted by LBP guidelines. Even so, many seem unaware that such guidelines exist. Furthermore, the behaviour of at least some of these practitioners differs from that recommended in these guidelines. Few randomised controlled trials evaluating printed information as an intervention to change practitioner behaviour have utilised a no-intervention control. All these trials have used a cluster design and most have methodological flaws. None specifically focus upon practitioner behaviour towards LBP patients. Studies that have investigated other strategies to change practitioner behaviour with LBP patients have produced conflicting results. Although numerous LBP guidelines have been developed worldwide, there is a paucity of data on whether their dissemination actually changes practitioner behaviour. Primarily because of its low unit cost, sending printed information to large numbers of practitioners is an attractive dissemination and implementation strategy. The effect size of such a strategy, at an individual practitioner level, is likely to be small. However, if large numbers of practitioners are targeted, this strategy might achieve meaningful changes at a population level. METHODS: The primary aim of this prospective, pragmatic randomised controlled trial is to test the short-term effectiveness (six-months following intervention) of a directly-posted information package on the reported clinical behaviour (primary outcome), attitudes and beliefs of UK chiropractors, osteopaths and musculoskeletal physiotherapists. We sought to randomly allocate a combined sample of 1,800 consenting practitioners to receive either the information package (intervention arm) or no information above that gained during normal practice (control arm). We collected questionnaire data at baseline and six-months post-intervention. The analysis of the primary outcome will assess between-arm differences of proportions of responses to questions on recommendations about activity, work and bed-rest, that fall within categories previously defined by an expert consensus exercise as either 'guideline-consistent' and 'guideline-inconsistent'.

Chiropractic↗
PubMed2005

Ejection mechanics and trajectory of the ascospores of Gibberella zeae (anamorph Fuarium graminearum).

Since wind speed drops to zero at a surface, forced ejection should facilitate spore dispersal. But for tiny spores, with low mass relative to surface area, high ejection speed yields only a short range trajectory, so pernicious is their drag. Thus, achieving high speeds requires prodigious accelerations. In the ascomycete Gibberella zeae, we determined the launch speed and kinetic energy of ascospores shot from perithecia, and the source and magnitude of the pressure driving the launch. We asked whether the pressure inside the ascus suffices to account for launch speed and energy. Launch speed was 34.5 ms-1, requiring a pressure of 1.54 MPa and an acceleration of 870,000 g--the highest acceleration reported in a biological system. This analysis allows us to discount the major sugar component of the epiplasmic fluid, mannitol, as having a key role in driving discharge, and supports the role of potassium ion flux in the mechanism.

Gibberella↗
PubMed2004

The development and testing of the depression, anxiety, and positive outlook scale (DAPOS).

Measurement of depression and other mood states in pain patients has been criticised in recent years on the grounds that most questionnaires were not developed in pain populations and suffer from criterion contamination by somatic items. In addition, there is no accepted measurement for positive emotions which are more than the absence of depression. The aim of this study was to develop a reliable and brief tool to assess mood in pain patients. Non-somatic items concerning depression, anxiety and positive outlook were extracted using exploratory factor analysis from commonly used instruments (the Beck Depression Inventory and the Hospital Anxiety and Depression Scale) completed by over 900 chronic pain patients. Confirmatory factor analysis was used to test the internal structure of the final item set. Items were then reworded and presented as a new questionnaire (the Depression, Anxiety and Positive Outlook Scale: DAPOS) to two new samples: patients attending pain management and patients attending osteopathy. The new questionnaire was compared with several well-known questionnaires (SF36, BDI, PCS). The structure was calibrated and tested using confirmatory factor analysis on both samples. Finally, a subset of patients carried out a sorting task to test for face validity. The DAPOS performed well, indicating that it is a reliable measure of the three mood states with good initial evidence of validity in these samples.

Anxiety↗
PubMed2003

Treatment and the process of care in musculoskeletal conditions. A multidisciplinary perspective and integration.

Chronic musculoskeletal pain for which there is not an obvious underlying physical cause is one of the most common reasons for long-term disability. There is a need to develop better ways of managing these problems. Improving the understanding of the basis for decision making, the processes of care, and the beliefs and expectations of patients and health care professionals seems as fundamental as basic laboratory science is to understanding inflammatory arthopathies. Little is known about the beliefs and expectations of patients and health care professionals, nor the multitude of factors such as traditions within professional groups, education, and language that professionals use in decision making. When better understanding of these factors and the mismatch between professionals and patients is achieved, then theoretical frameworks, treatment approaches, and the education of professionals in appropriate management will be improved.

Attitude of Health Personnel↗