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Low back pain in rural Tibet.

In a baseline assessment of 30 rural villages surrounding Shigatse City, Tibet, many people, especially women, identified low back pain as a serious health problem. Consequently, we aimed to establish the prevalence of such pain and to develop appropriate interventions. We did a cross-sectional study of the prevalence of low back pain and related functional disability using two-stage random cluster sampling. We included 499 adults aged at least 15 years from 19 villages. The point prevalence of low back pain was 34.1% (95% CI 27.9-40.3% [170 people]); the 12-month prevalence was 41.9% (35.5-48.3% [209 people]). 100 (20%) villagers had substantial functional disability associated with low back pain. Low back pain is likely to be an important and under recognised problem in rural societies like Tibet.

Adolescent↗

Effect of firmness of mattress on chronic non-specific low-back pain: randomised, double-blind, controlled, multicentre trial.

BACKGROUND: A firm mattress is commonly believed to be beneficial for low-back pain, although evidence supporting this recommendation is lacking. We assessed the effect of different firmnesses of mattresses on the clinical course of patients with chronic non-specific low-back pain. METHODS: In a randomised, double-blind, controlled, multicentre trial, we assessed 313 adults who had chronic non-specific low-back pain, but no referred pain, who complained of backache while lying in bed and on rising. Mattress firmness is rated on a scale developed by the European Committee for Standardisation. The H(s) scale starts at 1.0 (firmest) and stops at 10.0 (softest). We randomly assigned participants firm mattresses (H(s)=2.3) or medium-firm mattresses (H(s)=5.6). We did clinical assessments at baseline and at 90 days. Primary endpoints were improvements in pain while lying in bed, pain on rising, and disability. FINDINGS: At 90 days, patients with medium-firm mattresses had better outcomes for pain in bed (odds ratio 2.36 [95% CI 1.13-4.93]), pain on rising (1.93 [0.97-3.86]), and disability (2.10 [1.24-3.56]) than did patients with firm mattresses. Throughout the study period, patients with medium-firm mattresses also had less daytime low-back pain (p=0.059), pain while lying in bed (p=0.064), and pain on rising (p=0.008) than did patients with firm mattresses. INTERPRETATION: A mattress of medium firmness improves pain and disability among patients with chronic non-specific low-back pain.

Adult↗

Back pain--a presentation of metastatic testicular germ cell tumours.

9 patients (21%) from a total of 42 young men with testicular germ cell malignancy had back pain as a major presenting symptom; 2 had back pain without unilateral testicular enlargement. Time to correct diagnosis from first visit to a doctor was significantly longer in those with back pain than in those with testicular symptoms. All patients with back pain had para-aortic node metastases. Young men with back pain should be examined for testicular disease and should also be asked about past testicular abnormalities.

Adult↗

Effects of valdecoxib in the treatment of chronic low back pain: results of a randomized, placebo-controlled trial.

BACKGROUND: Valdecoxib, a cyclooxygenase (COX)-2 specific inhibitor, is indicated for relief of the signs and symptoms of rheumatoid arthritis, osteoarthritis, and primary dysmenorrhea. Therapeutic doses of COX-2 specific inhibitors are as effective as nonspecific nonsteroidal anti-inflammatory drugs in reducing inflammatory pain while sparing the gastrointestinal and platelet toxicity associated with nonspecific COX-1 inhibition. OBJECTIVE: The aim of this study was to assess the analgesic efficacy and tolerability of valdecoxib 40 mg/d compared with placebo in the treatment of chronic low back pain. METHODS: This 4-week, prospective, randomized, double-blind placebo-controlled, parallel-group study was conducted at 37 centers across the United States and 5 centers in Canada. Patients aged > or =18 years with chronic low back pain in flare were enrolled. Patients were randomized to receive valdecoxib 40-mg/d or placebo tablets, once daily for 4 weeks. Patients rated low back pain intensity on a visual analog scale and completed the Roland-Morris Disability Questionnaire and the modified Brief Pain Inventory-Short Form (mBPI-SF) at each visit. RESULTS: Two hundred ninety-three patients were enrolled. The valdecoxib group comprised 148 patients (81 women, 67 men; mean [SD] age, 48.6 [13.3] years; mean [SD] body weight, 86.6 [20.9] kg), and the placebo group included 145 patients (85 women, 60 men; mean [SD] age, 48.7 [12.6] years; mean [SD] body weight, 85.6 [19.9] kg). Of the enrolled patients, 249 completed the study: 134 patients (91%) who received valdecoxib and 115 patients (79%) who received placebo. No statistically significant differences in patient baseline characteristics were noted between treatment groups, except in response to 1 mBPI-SF question; patients in the valdecoxib group reported significantly greater interference in relations with other people due to pain than did those in the placebo group (P = 0.048). Changes from baseline in low back pain intensity were significantly greater in valdecoxib-treated patients at each assessment (all, P < 0.001 vs placebo). Pain scores on the mBPI-SF indicated significantly greater pain relief with valdecoxib at each assessment (all, P < or = 0.014 vs placebo). Improvements in mean Roland-Morris Disability Questionnaire score with valdecoxib were significantly greater than with placebo at each assessment (all, P < or = 0.003). Although the overall incidence of adverse events (AEs) was significantly higher among patients receiving valdecoxib than those receiving placebo (35.1% vs 24.1%, respectively; P = 0.042), no significant differences were found between groups for the incidence of any individual AE. Most AEs (89% [77/87 total events]) were mild or moderate in severity. CONCLUSIONS: In this study of patients with chronic low back pain, valdecoxib 40 mg/d provided rapid relief (within 1 week) and consistent relief (over 4 weeks). In addition, significant improvement in function and decreased disability were found with valdecoxib compared with placebo.

Adult↗

Piroxicam fast-dissolving dosage form in the treatment of patients with acute low back pain.

An open-label, noncomparative study of the efficacy and tolerability of a once-daily piroxicam fast-dissolving dosage form (FDDF) comprised 157 patients aged 15 to 76 years (56.7% men) with acute low back pain of not more than 48 hours' duration. Patients received 40-mg piroxicam FDDF once daily for the first 2 days and 20 mg once daily for up to a total of 14 days of treatment. Fifteen investigators in three countries examined patients at baseline and at follow-up visits on days 4, 8, and 15. All efficacy assessments-including general low back pain; pain on sitting, standing, and walking; overall severity of night pain; duration of morning stiffness; lumbosacral tenderness on moderate pressure; modified Schober test of ability to bend forward; restriction of passive motion; length of time to resumption of an activity impaired by back pain; and overall restriction of back motion-demonstrated statistically significant improvements from baseline at each follow-up visit. Relief of pain, noted 30 minutes after the first dose, was maintained for the 24-hour dosing interval during the first 3 days. At visit 4, after piroxicam FDDF treatment had been completed, the number of patients being assessed had declined by half, principally because the resolution of symptoms had prompted discontinuation of the study drug. At the end of the treatment, 82.9% of patients evaluated the efficacy of piroxicam FDDF as good or excellent and investigators rated efficacy as good or excellent in 85.6% of patients. Tolerability was also rated highly, with 91% of patients characterizing piroxicam FDDF treatment as good or excellent, and investigators rating the treatment as good or excellent in 92% of patients. In all, 12.7% of the patients experienced drug-related adverse events, most frequently involving the gastrointestinal system. Drug-related adverse experiences prompted discontinuation of the study medication in five (3.2%) patients. These results suggest that the newly developed dosage form, piroxicam FDDF, administered in a dosage of 40 mg/d for the first 2 days and 20 mg/d thereafter (for up to 14 days), is effective and well tolerated in the treatment of patients with acute low back pain.

Adolescent↗

The effect of load on the coordination of the trunk for subjects with and without chronic low back pain during flexion-extension and lateral bending tasks.

OBJECTIVE: To evaluate if patients move their trunk sections differently than normal subjects and to determine if these differences increase when lifting a load. DESIGN: Comparative study using a repeated measures design. BACKGROUND: Many studies demonstrate a modification of the lumbar-pelvic rhythm for chronic low back pain patients but the large variability of the results impair the discrimination power. It was hypothesized that the lifting of a load would magnify the manifestation of lumbar impairments. METHODS: Fifteen chronic low back pain patients and 18 normal subjects performed maximal flexion-extension and lateral bending of the trunk with and without a 12 kg load. The pelvic, lumbar and thoracic motions were measured with a motion analysis system. RESULTS: During flexion-extension tasks, a significant decrease in lumbar flexion and increase in thoracic flexion were observed for the patients. The load effect was significant for all trunk sections but did not allow a better discrimination between groups. CONCLUSIONS: Lifting a 12 kg load during flexion-extension of the trunk did confirm alteration in trunk section coordination but did not help to better discriminate patients from normal subjects. However, it was demonstrated for the first time that chronic low back pain patients compensate for a loss of lumbar flexion by increasing their thoracic flexion. RELEVANCE: The lumbar-pelvic rhythm is routinely used to evaluate low back impairments. The use of kinematic measures enhance the objectivity of the examination but the large variability of the results impair the discrimination power. Lifting a load during such an evaluation might magnify the low back impairments and increase the discrimination power of this measure.

Adult↗

Symmetry and linearity of trunk function in subjects with non-specific low back pain.

Objective. To investigate the effect of a standard rehabilitation program on the symmetry of trunk kinematics in subjects with non-specific low back pain.Design. Assessing lumbar spine kinematics in the cardinal planes using dynamometry.Background. Previous evaluations of trunk symmetry focussed more on anatomical rather than functional symmetry. Correlation of functional symmetry with low back pain was occasionally performed, but only for base line evaluations. To the best of the author's knowledge, there is no study examining the effect of exercise on the functional symmetry of the trunk, especially in non-specific low back pain subjects.Methods. Two groups of young male subjects whose working conditions incurred long daily hours of sitting and standing participated in the study. Muscles of the lumbar spine were initially evaluated in the cardinal planes using dynamometry. The same parameters (maximum isometric torque, dynamic torque, angular velocity and range of motion) were then repeatedly measured throughout a standardized strength protocol lasting for 12 sessions over a four-week period.Results. As pain gradually disappeared over a one-month period of rehabilitation, certain factors of the trunk kinematics exhibited convergence towards perfect symmetry while others showed oscillations. Moreover, global right-left data for certain trunk kinematics exhibited near-perfect linear relationship.Conclusion. Functional symmetry of the trunk in the coronal and transverse planes can be used to assess the progress of rehabilitation programs of non-specific low back pain subjects. RelevanceRehabilitation programs focus on the progress of directly measured trunk kinematics, which do not always exhibit monotonic behavior. This paper alludes to the importance of tracking symmetry of trunk kinematics as it may help clinicians modify the strengthening protocols in order to achieve more rapid relief from back pain.

Adult↗

Disorders in trunk rotation during walking in patients with low back pain: a dynamical systems approach.

OBJECTIVE: (1) To introduce an evaluation tool for the assessment of walking disorders in low back pain patients. (2) To investigate whether walking patterns in low back pain patients are different from those of control subjects. DESIGN: Relative phase measures of movement coordination are applied in the assessment of trunk function in a small group of patients with non-specific low back pain and in control subjects. BACKGROUND: Normal subjects change the coordination of pelvic and thoracic rotations from an in-phase to an out-of-phase pattern with increasing walking speed. Low back pain patients may have a reduced ability to counter rotate pelvis and thorax at higher walking speeds (from 1.0 m/s onwards) as a result of hyperstable coordination patterns. METHODS: Six patients with non-specific low back pain and six healthy control subjects walked on a treadmill at comfortable walking speeds and during a systematic variation of the treadmill velocity. Coordination of arm and leg movements as well as of pelvic and thoracic rotations was analyzed using a relative phase algorithm. RESULTS AND CONCLUSIONS: The comfortable walking speed was reduced in the patient group. In contrast to the control subjects, four of the six patients were not able to establish an out-of-phase coordination pattern between thorax and pelvis at higher walking speeds. This coincided with an increased stability of movement coordination, indicating guarded behavior. In addition, an increased asymmetry between the phase-relations of left and right side of the body was found in some of the patients.

Adolescent↗

Examination of the myoelectric activity of back muscles during random vibration--methodical approach and first results.

OBJECTIVE: To elaborate methods for an elimination of artefacts and the analysis of the relationship between random whole-body vibration and electromyographic responses of back muscles. DESIGN: A procedure involving wavelets and digital filtering has been used for the removal of artefacts from the electromyogram during whole-body vibration. BACKGROUND: Back muscle forces contribute essentially to the whole-body vibration-induced spinal load. The electromyogram can help to estimate these forces during whole-body vibration. METHODS: 38 subjects were exposed to identical random low-frequency whole-body vibration. Artefacts caused by the electrocardiogram in the electromyogram were identified by appropriate wavelets and eliminated in the time-domain. After averaging the individual high-pass filtered and rectified undistorted electromyograms across subjects, the transfer function from seat acceleration to the average electromyogram was determined and used for the prediction of the electromyogram. RESULTS: A sufficient procedure involving wavelets and digital filtering has been elaborated for the removal of artefacts from the electromyogram of back muscles during whole-body vibration. A systematic relationship between random vibration and back muscle-response was obtained and described. The transfer function suggests two different reflex-mechanisms - one elicited below, the other above 4 Hz. CONCLUSIONS: The approach of analysing and predicting the muscle-response to random vibration by using the transfer function seems to be promising and could be a valuable tool for the future calculation of muscle forces as an input to active models. RELEVANCE: The knowledge of the extent and timing of the back muscle-response to random whole-body vibration is relevant for an improved evaluation of whole-body vibration with respect to health.

Adult↗

Correlation between electromyographic spectral changes and subjective assessment of lumbar muscle fatigue in subjects without pain from the lower back.

OBJECTIVE: The purpose of this study was to correlate objective measurements of muscle fatigue in the lower back to the subject's own assessment of fatigue. DESIGN: Muscle fatigue in the lower back was assessed in healthy subjects using electromyography (EMG), endurance time and the Borg scale. BACKGROUND: Muscle fatigue, measured with EMG and endurance time, in the lower back, is significant for patients with pain in the lower back. METHODS: Fifty healthy subjects participated. EMG was detected from the lumbar extensor muscles during a modified Sørensen's test, an isometric contraction for the back extensors until exhaustion. During the test, subjects rated their subjective fatigue on a Borg CR-10 scale. RESULTS: Borg scale ratings correlated with endurance time (0.68) and EMG median- and mean power frequency slopes (0.41-0.50). At a Borg rating of 3, median- and mean power frequency and endurance time were reduced by 30%. At a Borg rating of 5, median- and mean power frequency and endurance time were reduced by 50%. At a Borg rating of 7, median- and mean power frequency and endurance time were reduced by 60-70%. CONCLUSIONS: Significant correlation between the Borg scale, EMG and endurance time suggests a close relationship between subjective and objective assessment of muscle fatigue.

Adult↗

Back pain and the resolution of diagnostic uncertainty in illness narratives.

In this paper I consider 30 Finnish women's written narratives about the process of getting back pain diagnosed. From the beginning of the early discomfort of back pain, the women were sure of its bodily and subjective reality. They struggled repeatedly to be taken seriously, and only after years of medical disparagement did they encounter medical professionals who were able solve the riddle and give it a name, a diagnosis. Since back pain is a baffling problem and challenges the central biomedical epistemology-objective knowledge and measurable findings separate from subjective experience-it allowed the doctors to show a disrespectful attitude toward back pain sufferers. The moral essence of the women's common story was the stigmatizing experience when doctors did not take subjective pain seriously. Instead, doctors' neglectful attitudes became part of the prolonged problem. During the long-lasting uncertainty, women tried multiple coping strategies to ease their lives and developed mental attitudes to endure the pain. Since the protagonists did not give up the lived certainty of back pain they were gradually able to challenge medical uncertainty and to demand a thorough medical examination, and/or through random circumstance they encountered doctors who were willing to take their symptoms seriously. This triggered turning points that immediately or very soon resulted in solving the riddle of the puzzling pain. To be finally diagnosed was a great relief. However, to be taken seriously as a person was considered to be the greatest relief.

Adaptation, Psychological↗

Chronic back pain sufferers--striving for the sick role.

The paper draws on data from a Norwegian online discussion list for back pain sufferers and from open, in-depth interviews with Norwegian back pain sufferers. In both sources, back pain sufferers express a fear that the reality of their pain is being questioned. The paper discusses how these experiences of delegitimation can be understood as a result of the back pain sufferers' inability to achieve the sick role. Many of these individuals strive and frequently fail to achieve clinical and social characteristics that make up appropriate sickness behaviour. A lack of proof that they are sick, including a lack of medical diagnosis, appropriate health care treatment, and visible disabilities, can lead to accusations, both felt and enacted, of malingering, hypochondria and/or mental illness. This in turn can lead to problems in the achievement and/or legitimisation of sick role benefits such as sick leave and medication. The sick role concept has been criticised as being inappropriate for describing the experiences of the chronically ill. The paper argues that the sick role concept still appears to reflect the expectations of health professionals, the public and the patient himself. The study does not support the view that chronic illness is related to a decreased dependency on the medical profession. Instead, doctors' inability to offer chronic back pain sufferers a clear diagnosis, explanation, and/or a course of treatment or cure appears not to liberate the patient but rather prolongs his or her dependence on the doctor.

Adaptation, Psychological↗

Teasing apart quality and validity in systematic reviews: an example from acupuncture trials in chronic neck and back pain.

The objectives of the study were (1) to carry out a systematic review to assess the analgesic efficacy and the adverse effects of acupuncture compared with placebo for back and neck pain and (2) to develop a new tool, the Oxford Pain Validity Scale (OPVS), to measure validity of findings from randomized controlled trials (RCTs), and to enable ranking of trial findings according to validity within qualitative reviews. Published RCTs (of acupuncture at both traditional and non-traditional points) were identified from systematic searching of bibliographic databases (e.g. MEDLINE) and reference lists of retrieved reports. Pain outcome data were extracted with preference given to standardized outcomes such as pain intensity. Information on adverse effects was also extracted. All included trials were scored using a five-item 0-16 point validity scale (OPVS). The individual RCTs were ranked according to their OPVS score to enable more weight to be placed on the trials of greater validity when drawing an overall conclusion about the efficacy of acupuncture for relieving neck and back pain. Statistical analyses were carried out on the OPVS scores to assess the relationship between trial finding (positive or negative) and validity. Thirteen RCTs met the inclusion criteria. Five trials concluded that acupuncture was effective, and eight concluded that it was not effective for relieving back or neck pain. There was no obvious difference between the findings of trials using traditional and non-traditional points. Using the new OPVS scale, the validity scores of the included trials ranged from 4 to 14. There was no significant relationship between OPVS score and trial finding (positive versus negative). Authors' conclusions did not always agree with their data. We drew our own conclusions (positive/negative) based on the data presented in the reports. Re-analysis using our conclusions showed a significant relationship between OPVS score and trial finding, with higher validity scores associated with negative findings. OPVS is a useful tool for assessing the validity of trials in qualitative reviews. With acupuncture for chronic back and neck pain, we found that the most valid trials tended to be negative. There is no convincing evidence for the analgesic efficacy of acupuncture for back or neck pain.

Acupuncture Therapy↗

The role of fear-avoidance beliefs in acute low back pain: relationships with current and future disability and work status.

Fear-avoidance beliefs have been identified as an important psychosocial variable in patients with chronic disability doe to low back pain. The importance of fear-avoidance beliefs for individuals with acute low back pain has not been explored. Seventy-eight subjects with work-related low back pain of less than 3 weeks'duration were studied. Measurements of pain intensity, physical impairment, disability, nonorganic signs and symptoms, and depression were taken at the initial evaluation. Fear-avoidance beliefs were measured with the work and physical activity subscales of the Fear-avoidance Beliefs Questionnaire. Disability and work status were re-assessed after 4 weeks of physical therapy. Patterns of correlation between fear-avoidance beliefs and other concurrently-measured variables were similar to those reported in patients with chronic low back pain. Fear-avoidance beliefs did not explain a significant amount of the variability in initial disability levels after controlling for pain intensity and physical impairment. Fear-avoidance beliefs about work were significant predictors of 4-week disability and work status even after controlling for initial levels of pain intensity, physical impairment, and disability, and the type of therapy received. Fear-avoidance beliefs are present in patients with acute low back pain, and may be an important factor in explaining the transition from acute to chronic conditions. Screening for fear-avoidance beliefs may be useful for identifying patients at risk of prolonged disability and work absence.

Acute Disease↗

Topical treatment of chronic low back pain with a capsicum plaster.

The efficacy and tolerance of a capsicum plaster in non-specific low back pain was investigated in a double-blind, randomised, placebo-controlled multicentre parallel group study. A total of 320 patients were randomly assigned to two groups of n=160 subjects treated by the active or the placebo plaster. The main outcome measures used were a compound pain subscore of the Arhus low back rating scale (continuous variable), and a response criterion of a reduction in pain subscore=30% from baseline to final assessment (secondary, non-continuous variable). In addition, the partial pain scores, disability and mobility restriction subscores, the total score of the Arhus low back rating scale, the global evaluation of efficacy by investigator and patient, adverse events, a patient questionnaire on use of the plaster, and an evaluation of tolerance by investigator and patient were obtained. After 3 weeks treatment with capsicum and placebo plaster respectively, the compound pain subscore was reduced by 42% (capsicum) and 31% (placebo) from values on entry. Responder rate was 67% versus 49% (p=0.002). The investigators rated efficacy as "excellent" or "good" by 74% and 36%; the patient's efficacy rating "symptomfree" or "improved" reached 82% and 50%. Adverse local drug reactions were found in 12 patients (7.5%) on capsicum and 5 (3.1%) on placebo. No systemic side-effects were observed. The superiority of the treatment of chronic non-specific low back pain with capsicum plaster compared to placebo was clinically relevant and highly statistically significant. The capsicum plaster offers a genuine alternative in the treatment of non-specific low back pain.

Administration, Topical↗

One-year follow-up of first onset low back pain.

Efforts to examine the process and risk of developing chronic back pain have relied generally upon retrospective study of individuals with already established pain. In an alternative approach to understanding the clinical course and evolution of low back disorders, a cohort of 76 men experiencing their first episode of back pain was assessed prospectively at 2, 6 and 12 months following pain onset. Standard measures of pain (Descriptor Differential Scale: DDS), disability (Sickness Impact Profile: SIP), and distress (Beck Depression Inventory: BDI) were employed to classify the sample into five groups: Resolved, Pain Only, Disability/Distress Only, Pain and Mild Disability/Distress, and Clinical Range. At both 6 and 12 months post pain onset, most (78%, 72% respectively) of the sample continued to experience pain. Many also experienced marked disability at 6 months (26%) and 12 months (14%). At 12 months, no participants had worsened relative to the 2-month baseline. Doubly multivariate analyses of variance (MANOVAs) were employed to compare baseline groups (Pain Only, Pain and Mild Disability/Distress, Clinical Range) on the DDS, SIP, and BDI across time. The group by time interaction from 2 through 12 months was reliable, with greatest change occurring in the Clinical Range group in disability and distress; interestingly, the decrease in pain was comparable among all groups. Follow-up tests across measures demonstrated greater change in the early (2-6-month) interval and relative stability in the later (6-12-month) interval. Comparison of those classified as 'improvers' with those who did not improve from 2 to 12 months showed similar findings. The clinical course of first onset back pain may be prolonged for many patients, and involves a continuum of related disability and distress. Individuals at risk for marked symptoms 1 year after an initial episode of back pain can be identified early, and prompt treatment might reduce the risk of pain chronicity.

Adolescent↗

Indirect costs of back pain in the Netherlands: a comparison of the human capital method with the friction cost method.

In this study we estimated the indirect costs of back pain in 1991 in The Netherlands on the basis of two approaches: the traditionally used human capital method and the more recently developed friction cost method. The indirect costs of illness were defined as the value of production losses of paid labour and related costs to society due to back pain. The results of this study in 1991 in The Netherlands show that the short-term indirect costs estimated by the human capital method were more than three times as high as the indirect costs estimated by the friction cost method (US$ 4.6 billion vs. USS 1.5 billion, respectively). The lower estimate of indirect costs when using the friction cost method is mainly due to the fact that in this method actual production losses are estimated during a relatively short friction period, which is defined as the period needed to restore the initial production level. In contrast with the human capital method, long-term absenteeism and disability do not induce additional costs when applying the friction cost method. Since the friction cost method takes into account that employees can be replaced, we believe that this method produces a more accurate estimate of indirect costs than the human capital method. Notwithstanding the resulting decrease in indirect costs of back pain, these costs are still impressive, representing 0.28% of the GNP in The Netherlands in 1991. As a consequence, but particularly stimulated by structural changes in the Dutch social security system, policies aimed at reducing indirect costs of back pain, increasingly concentrate on the development and evaluation of interventions early after the onset of disease. This is complemented, on the one hand, by the development of clinical guidelines for the management of back pain in primary care and, on the other hand, by governmental policies aimed at reintegration of chronically ill in the labour force.

Adult↗

Prediction of physician visits and prescription medicine use for back pain.

The primary purpose of this study was to examine the extent to which specific patient attitudes and beliefs about medical care and self-care for back pain predict future healthcare use. An automated database allowed examination of the predictive relationships in two primary care patient samples. In general, beliefs that physicians should find a definitive cause and permanent cure for back pain predicted neither physician visits nor prescription medication fills. Patient attitudes endorsing the benefits of medical treatment for back pain (as opposed to a permanent cure) predicted the use of these specific healthcare services. In a third sample of primary care back pain patients, we assessed whether a four-session self-care intervention modified those attitudes and beliefs shown to predict future healthcare use. The group intervention was associated with changes in attitudes about use of physician services but not medication use. A secondary purpose was to examine initial psychometric properties of a proposed back pain Self-Care Orientation Scale made up of the original 11 items. Factor analyses of the item set yielded three factors, but inconclusive results; the internal consistency of the identified sub-scales was only moderate. However, findings that a subset of items predicted physician visits and prescriptions medication fills, and was sensitive to change following a self-care intervention, suggest avenues for improving measurement of self-care orientation. These findings help clarify specific patient attitudes and beliefs that are related to healthcare utilization and suggest that a subset of these beliefs can be modified through a brief educational intervention.

Attitude to Health↗