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Song YP, Liu JL, Zong CZ, Zhang FS, Ren YF, Ching YL, Wang YX, Li WX, Zhao H, Huang YR, Gao K. A bibliometric study on trends in chiropractic research from 1920 to 2023. Complement Ther Med 2024; 82:103038. [PMID: 38582375 DOI: 10.1016/j.ctim.2024.103038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/25/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024] Open
Abstract
OBJECTIVE An increasing body of evidence suggests a positive role of chiropractic in the treatment of neuro-musculoskeletal disorders. This study aims to explore current research hotspots and trends, providing insights into the broad prospects of this field. METHODS A bibliometric review was conducted on all chiropractic articles included in the Web of Science Core Collection before December 31, 2023. RESULTS Over the past century, the volume of research in the field of chiropractic has been fluctuating annually, with four peaks observed in total. The United States, Canada, Australia, and the United Kingdom are leading countries. Chu, Eric Chun-Pu is the author with the most publications, while Bronfort, Gert has the highest total citation count. The University of Southern Denmark has produced the most publications, while Queens University - Canada is the most central institution. The Journal of Manipulative and Physiological Therapeutics is the journal with the most publications and citations, while the Journal of the American Medical Association is the most central journal. The two most-cited articles were both authored by Eisenberg DM. Emerging keywords include "chronic pain" and "skills". The theoretical mechanisms and scientific basis of chiropractic, its clinical practice and safety, education and training, integration with other disciplines, and patient experiences and satisfaction are the frontiers and hotspots of research. CONCLUSION This study integrates bibliometric analysis to summarize the current state of research and global network centers in the field of chiropractic, further highlighting the hotspots and trends in this field. However, Individual and national rankings should be interpreted with caution due to our focus on Web of Science rather than PubMed.
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Affiliation(s)
- Yi-Ping Song
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Jia-Li Liu
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Chen-Zhong Zong
- The Third Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Fang-Shuo Zhang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Yan-Feng Ren
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Yuen-Lim Ching
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Yi-Xiao Wang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Wen-Xun Li
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - He Zhao
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China.
| | - Yi-Ran Huang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China.
| | - Kuo Gao
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
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Yang S, Kim W, Kong HH, Do KH, Choi KH. Epidural steroid injection versus conservative treatment for patients with lumbosacral radicular pain: A meta-analysis of randomized controlled trials. Medicine (Baltimore) 2020; 99:e21283. [PMID: 32791709 PMCID: PMC7386972 DOI: 10.1097/md.0000000000021283] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/06/2020] [Accepted: 06/15/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Previous systemic reviews have examined the efficacy of individual therapeutic agents, but which type of treatment is superior to another has not been pooled or analyzed. The objective of the current study was to compare the clinical effectiveness of epidural steroid injection (ESI) versus conservative treatment for patients with lumbosacral radicular pain. METHODS A systematic search was conducted with MEDLINE, EMBASE, and CENTRAL databases with a double-extraction technique for relevant studies published between 2000 and January 10, 2019. The randomized controlled trials which directly compared the efficacy of ESI with conservative treatment in patients with lumbosacral radicular pain were included. Outcomes included visual analog scale, numeric rating scale, Oswetry disability index, or successful events. Two reviewers extracted data and evaluated the methodological quality of papers using the Cochrane Collaboration Handbook. A meta-analysis was performed using Revman 5.2 software. The heterogeneity of the meta-analysis was also assessed. RESULTS Of 1071 titles initially identified, 6 randomized controlled trials (249 patients with ESI and 241 patients with conservative treatment) were identified and included in this meta-analysis. The outcome of the pooled analysis showed that ESI was beneficial for pain relief at short-term and intermediate-term follow-up when compared with conservative treatment, but this effect was not maintained at long-term follow-up. Successful event rates were significantly higher in patients who received ESI than in patients who received conservative treatment. There were no statistically significant differences in functional improvement after ESI and conservative treatment at short-term and intermediate-term follow-up. The limitations of this meta-analysis resulted from the variation in types of interventions and small sample size. CONCLUSIONS According to the results of this meta-analysis, the use of ESI is more effective for alleviating lumbosacral radicular pain than conservative treatments in terms of short-term and intermediate-term. Patients also reported more successful outcomes after receiving ESI when compared to conservative treatment. However, this effect was not maintained at long-term follow-up. This meta-analysis will help guide clinicians in making decisions for the treatment of patients with lumbosacral radicular pain, including the use of ESI, particularly in the management of pain at short-term.
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Affiliation(s)
- Seoyon Yang
- Department of Rehabilitation Medicine, Ewha Womans University Seoul Hospital, Ewha Womans University
| | - Won Kim
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine
| | - Hyun Ho Kong
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine
| | - Kyung Hee Do
- Department of Rehabilitation Medicine, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Kyoung Hyo Choi
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine
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Coulter ID, Crawford C, Hurwitz EL, Vernon H, Khorsan R, Suttorp Booth M, Herman PM. Manipulation and mobilization for treating chronic low back pain: a systematic review and meta-analysis. Spine J 2018; 18:866-879. [PMID: 29371112 PMCID: PMC6020029 DOI: 10.1016/j.spinee.2018.01.013] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 12/07/2017] [Accepted: 01/11/2018] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Mobilization and manipulation therapies are widely used to benefit patients with chronic low back pain. However, questions remain about their efficacy, dosing, safety, and how these approaches compare with other therapies. PURPOSE The present study aims to determine the efficacy, effectiveness, and safety of various mobilization and manipulation therapies for treatment of chronic low back pain. STUDY DESIGN/SETTING This is a systematic literature review and meta-analysis. OUTCOME MEASURES The present study measures self-reported pain, function, health-related quality of life, and adverse events. METHODS We identified studies by searching multiple electronic databases from January 2000 to March 2017, examining reference lists, and communicating with experts. We selected randomized controlled trials comparing manipulation or mobilization therapies with sham, no treatment, other active therapies, and multimodal therapeutic approaches. We assessed risk of bias using Scottish Intercollegiate Guidelines Network criteria. Where possible, we pooled data using random-effects meta-analysis. Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) was applied to determine the confidence in effect estimates. This project is funded by the National Center for Complementary and Integrative Health under Award Number U19AT007912. RESULTS Fifty-one trials were included in the systematic review. Nine trials (1,176 patients) provided sufficient data and were judged similar enough to be pooled for meta-analysis. The standardized mean difference for a reduction of pain was SMD=-0.28, 95% confidence interval (CI) -0.47 to -0.09, p=.004; I2=57% after treatment; within seven trials (923 patients), the reduction in disability was SMD=-0.33, 95% CI -0.63 to -0.03, p=.03; I2=78% for manipulation or mobilization compared with other active therapies. Subgroup analyses showed that manipulation significantly reduced pain and disability, compared with other active comparators including exercise and physical therapy (SMD=-0.43, 95% CI -0.86 to 0.00; p=.05, I2=79%; SMD=-0.86, 95% CI -1.27 to -0.45; p<.0001, I2=46%). Mobilization interventions, compared with other active comparators including exercise regimens, significantly reduced pain (SMD=-0.20, 95% CI -0.35 to -0.04; p=.01; I2=0%) but not disability (SMD=-0.10, 95% CI -0.28 to 0.07; p=.25; I2=21%). Studies comparing manipulation or mobilization with sham or no treatment were too few or too heterogeneous to allow for pooling as were studies examining relationships between dose and outcomes. Few studies assessed health-related quality of life. Twenty-six of 51 trials were multimodal studies and narratively described. CONCLUSION There is moderate-quality evidence that manipulation and mobilization are likely to reduce pain and improve function for patients with chronic low back pain; manipulation appears to produce a larger effect than mobilization. Both therapies appear safe. Multimodal programs may be a promising option.
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Affiliation(s)
- Ian D Coulter
- RAND Corporation, 1776 Main St, Santa Monica, CA 90407-2138, USA; UCLA School of Dentistry, Box 951668, Los Angeles, CA 90095-1668, USA; Southern California University of Health Sciences, 16200 Amber Valley Dr, Whittier, CA 90604, USA.
| | - Cindy Crawford
- RAND Corporation, 1776 Main St, Santa Monica, CA 90407-2138, USA
| | - Eric L Hurwitz
- RAND Corporation, 1776 Main St, Santa Monica, CA 90407-2138, USA; Office of Public Health Studies, University of Hawai'i, Mānoa, 1960 East-West Rd, Biomed D104AA, Honolulu, HI 96822, USA
| | - Howard Vernon
- RAND Corporation, 1776 Main St, Santa Monica, CA 90407-2138, USA; Division of Research, Canadian Memorial Chiropractic College, 6100 Leslie St, Toronto, ON, Canada M2H 3J1
| | - Raheleh Khorsan
- UCI Department of Urban Planning and Public Policy, 300 Social Ecology I, Irvine, CA 92697-7075, USA
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Gorrell LM, Brown B, Lystad RP, Engel RM. Predictive factors for reporting adverse events following spinal manipulation in randomized clinical trials - secondary analysis of a systematic review. Musculoskelet Sci Pract 2017; 30:34-41. [PMID: 28521180 DOI: 10.1016/j.msksp.2017.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 04/11/2017] [Accepted: 05/08/2017] [Indexed: 02/09/2023]
Abstract
While spinal manipulative therapy (SMT) is recommended for the treatment of spinal disorders, concerns exist about adverse events associated with the intervention. Adequate reporting of adverse events in clinical trials would allow for more accurate estimations of incidence statistics through meta-analysis. However, it is not currently known if there are factors influencing adverse events reporting following SMT in randomized clinical trials (RCTs). Thus our objective was to investigate predictive factors for the reporting of adverse events in published RCTs involving SMT. The Physiotherapy Evidence Database (PEDro) and Cochrane Central Register of Controlled Trials (CENTRAL) were searched for RCTs involving SMT. Domains of interest included: sample size; publication date relative to the 2010 CONSORT statement; risk of bias; the region treated; and number of intervention sessions. 7398 records were identified, of which 368 articles were eligible for inclusion. A total of 140 (38.0%) articles reported on adverse events. Articles were more likely to report on adverse events if they possessed larger sample sizes, were published after the 2010 CONSORT statement, had a low risk of bias and involved multiple intervention sessions. The region treated was not a significant predictor for reporting on adverse events. Predictors for reporting on adverse events included larger sample size, publication after the 2010 CONSORT statement, low risk of bias and trials involving multiple intervention sessions. We recommend that researchers focus on developing robust methodologies and participant follow-up regimens for RCTs involving SMT.
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Affiliation(s)
- Lindsay M Gorrell
- Human Performance Laboratory, KNB 222, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
| | - Benjamin Brown
- Department of Chiropractic, Macquarie University, Building C5C West, Sydney, 2109, Australia.
| | - Reidar P Lystad
- Australian Institute of Health Innovation, Faculty of Medicine and Health Sciences, Macquarie University, Level 6, 75 Talavera Road, NSW, 2109, Australia.
| | - Roger M Engel
- Department of Chiropractic, Macquarie University, Building C5C West, Sydney, 2109, Australia.
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Nahin RL, Boineau R, Khalsa PS, Stussman BJ, Weber WJ. Evidence-Based Evaluation of Complementary Health Approaches for Pain Management in the United States. Mayo Clin Proc 2016; 91:1292-306. [PMID: 27594189 PMCID: PMC5032142 DOI: 10.1016/j.mayocp.2016.06.007] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/15/2016] [Accepted: 06/21/2016] [Indexed: 12/25/2022]
Abstract
Although most pain is acute and resolves within a few days or weeks, millions of Americans have persistent or recurring pain that may become chronic and debilitating. Medications may provide only partial relief from this chronic pain and can be associated with unwanted effects. As a result, many individuals turn to complementary health approaches as part of their pain management strategy. This article examines the clinical trial evidence for the efficacy and safety of several specific approaches-acupuncture, manipulation, massage therapy, relaxation techniques including meditation, selected natural product supplements (chondroitin, glucosamine, methylsulfonylmethane, S-adenosylmethionine), tai chi, and yoga-as used to manage chronic pain and related disability associated with back pain, fibromyalgia, osteoarthritis, neck pain, and severe headaches or migraines.
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Affiliation(s)
- Richard L Nahin
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD.
| | - Robin Boineau
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD
| | - Partap S Khalsa
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD
| | - Barbara J Stussman
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD
| | - Wendy J Weber
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD
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Manchikanti L, Benyamin RM, Falco FJE, Kaye AD, Hirsch JA. Do Epidural Injections Provide Short- and Long-term Relief for Lumbar Disc Herniation? A Systematic Review. Clin Orthop Relat Res 2015; 473:1940-56. [PMID: 24515404 PMCID: PMC4419020 DOI: 10.1007/s11999-014-3490-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND As part of a comprehensive nonsurgical approach, epidural injections often are used in the management of lumbar disc herniation. Recent guidelines and systematic reviews have reached different conclusions about the efficacy of epidural injections in managing lumbar disc herniation. QUESTIONS/PURPOSES In this systematic review, we determined the efficacy (pain relief and functional improvement) of the three anatomic approaches (caudal, lumbar interlaminar, and transforaminal) for epidural injections in the treatment of disc herniation. METHODS We performed a literature search from 1966 to June 2013 in PubMed, Cochrane library, US National Guideline Clearinghouse, previous systematic reviews, and cross-references for trials studying all types of epidural injections in managing chronic or chronic and subacute lumbar disc herniation. We wanted only randomized controlled trials (RCTs) (either placebo or active controlled) to be included in our analysis, and 66 studies found in our search fulfilled these criteria. We then assessed the methodologic quality of these 66 studies using the Cochrane review criteria for RCTs. Thirty-nine studies were excluded, leaving 23 RCTs of high and moderate methodologic quality for analysis. Evidence for the efficacy of all three approaches for epidural injection under fluoroscopy was strong for short-term (< 6 months) and moderate for long-term (≥ 6 months) based on the Cochrane rating system with five levels of evidence (best evidence synthesis), with strong evidence denoting consistent findings among multiple high-quality RCTs and moderate evidence denoting consistent findings among multiple low-quality RCTs or one high-quality RCT. The primary outcome measure was pain relief, defined as at least 50% improvement in pain or 3-point improvement in pain scores in at least 50% of the patients. The secondary outcome measure was functional improvement, defined as 50% reduction in disability or 30% reduction in the disability scores. RESULTS Based on strong evidence for short-term efficacy from multiple high-quality trials and moderate evidence for long-term efficacy from at least one high quality trial, we found that fluoroscopic caudal, lumbar interlaminar, and transforaminal epidural injections were efficacious at managing lumbar disc herniation in terms of pain relief and functional improvement. CONCLUSIONS The available evidence suggests that epidural injections performed under fluoroscopy by trained physicians offer improvement in pain and function in well-selected patients with lumbar disc herniation.
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Affiliation(s)
- Laxmaiah Manchikanti
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, Louisville, KY, USA,
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The Risk of Bias and Sample Size of Trials of Spinal Manipulative Therapy for Low Back and Neck Pain: Analysis and Recommendations. J Manipulative Physiol Ther 2014; 37:523-41. [DOI: 10.1016/j.jmpt.2014.07.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/23/2014] [Accepted: 07/23/2014] [Indexed: 12/18/2022]
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Cramer GD, Cambron J, Cantu JA, Dexheimer JM, Pocius JD, Gregerson D, Fergus M, McKinnis R, Grieve TJ. Magnetic resonance imaging zygapophyseal joint space changes (gapping) in low back pain patients following spinal manipulation and side-posture positioning: a randomized controlled mechanisms trial with blinding. J Manipulative Physiol Ther 2013; 36:203-17. [PMID: 23648055 DOI: 10.1016/j.jmpt.2013.04.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 02/22/2013] [Accepted: 03/25/2013] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The purpose of this study was to quantify lumbar zygapophyseal (Z) joint space separation (gapping) in low back pain (LBP) subjects after spinal manipulative therapy (SMT) or side-posture positioning (SPP). METHODS This was a controlled mechanisms trial with randomization and blinding. Acute LBP subjects (N = 112; four n = 28 magnetic resonance imaging [MRI] protocol groups) had 2 MRI appointments (initial enrollment and after 2 weeks of chiropractic treatment, receiving 2 MRI scans of the L4/L5 and L5/S1 Z joints at each MRI appointment. After the first MRI scan of each appointment, subjects were randomized (initial enrollment appointment) or assigned (after 2 weeks of chiropractic treatment appointment) into SPP (nonmanipulation), SMT (manipulation), or control MRI protocol groups. After SPP or SMT, a second MRI was taken. The central anterior-posterior joint space was measured. Difference between most painful side anterior-posterior measurements taken postintervention and preintervention was the Z joint "gapping difference." Gapping differences were compared (analysis of variance) among protocol groups. Secondary measures of pain (visual analog scale, verbal numeric pain rating scale) and function (Bournemouth questionnaire) were assessed. RESULTS Gapping differences were significant at the first (adjusted, P = .009; SPP, 0.66 ± 0.48 mm; SMT, 0.23 ± 0.86; control, 0.18 ± 0.71) and second (adjusted, P = .0005; SPP, 0.65 ± 0.92 mm; SMT, 0.89 ± 0.71; control, 0.35 ± 0.32) MRI appointments. Verbal numeric pain rating scale differences were significant at first MRI appointment (P = .04) with SMT showing the greatest improvement. Visual analog scale and Bournemouth questionnaire improved after 2 weeks of care in all groups (both P < .0001). CONCLUSIONS Side-posture positioning showed greatest gapping at baseline. After 2 weeks, SMT resulted in greatest gapping. Side-posture positioning appeared to have additive therapeutic benefit to SMT.
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Affiliation(s)
- Gregory D Cramer
- Department of Research, National University of Health Sciences, Lombard, IL 60148, USA.
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9
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Abstract
STUDY DESIGN Systematic review of interventions. OBJECTIVE To assess the effects of spinal manipulative therapy (SMT) for acute low back pain. SUMMARY OF BACKGROUND DATA SMT is one of many therapies for the treatment of low back pain, which is a worldwide, extensively practiced intervention. METHODS An experienced librarian searched for randomized controlled trials (RCTs) in multiple databases up to March 13, 2011. RCTs that examined manipulation or mobilization in adults with acute low back pain (<6-week duration) were included. The primary outcomes were pain, functional status and perceived recovery. Secondary outcomes were return-to-work and quality of life. Two authors independently conducted the study selection, risk of bias assessment and data extraction. GRADE (grading of recommendations assessment, development, and evaluation) was used to assess the quality of the evidence. The effects were examined for SMT versus (1) inert interventions, (2) sham SMT, (3) other interventions, and (4) SMT as adjunct therapy. RESULTS We identified 20 RCTs (total participants = 2674), 12 (60%) of which were not included in the previous review. In total, 6 trials (30% of all included studies) had a low risk of bias. In general, for the outcomes of pain and functional status, there is low- to very low-quality evidence suggesting no difference in effect for SMT when compared with inert interventions, sham SMT or as adjunct therapy. There was varying quality of evidence (from very low to moderate) suggesting no difference in effect for SMT when compared with other interventions. Data were particularly sparse for recovery, return-to-work, quality of life, and costs of care. No serious complications were observed with SMT. CONCLUSION SMT is no more effective for acute low back pain than inert interventions, sham SMT or as adjunct therapy. SMT also seems to be no better than other recommended therapies. Our evaluation is limited by the few numbers of studies; therefore, future research is likely to have an important impact on these estimates. Future RCTs should examine specific subgroups and include an economic evaluation.
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Goertz C, Pohlman K, Vining R, Brantingham J, Long C. Patient-centered outcomes of high-velocity, low-amplitude spinal manipulation for low back pain: A systematic review. J Electromyogr Kinesiol 2012; 22:670-91. [DOI: 10.1016/j.jelekin.2012.03.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 02/20/2012] [Accepted: 03/09/2012] [Indexed: 11/28/2022] Open
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Rubinstein SM, Terwee CB, Assendelft WJJ, de Boer MR, van Tulder MW. Spinal manipulative therapy for acute low-back pain. Cochrane Database Syst Rev 2012; 2012:CD008880. [PMID: 22972127 PMCID: PMC6885055 DOI: 10.1002/14651858.cd008880.pub2] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Many therapies exist for the treatment of low-back pain including spinal manipulative therapy (SMT), which is a worldwide, extensively practised intervention. This report is an update of the earlier Cochrane review, first published in January 2004 with the last search for studies up to January 2000. OBJECTIVES To examine the effects of SMT for acute low-back pain, which is defined as pain of less than six weeks duration. SEARCH METHODS A comprehensive search was conducted on 31 March 2011 in the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, CINAHL, PEDro, and the Index to Chiropractic Literature. Other search strategies were employed for completeness. No limitations were placed on language or publication status. SELECTION CRITERIA Randomized controlled trials (RCTs) which examined the effectiveness of spinal manipulation or mobilization in adults with acute low-back pain were included. In addition, studies were included if the pain was predominantly in the lower back but the study allowed mixed populations, including participants with radiation of pain into the buttocks and legs. Studies which exclusively evaluated sciatica were excluded. No other restrictions were placed on the setting nor the type of pain. The primary outcomes were back pain, back-pain specific functional status, and perceived recovery. Secondary outcomes were return-to-work and quality of life. SMT was defined as any hands-on therapy directed towards the spine, which includes both manipulation and mobilization, and includes studies from chiropractors, manual therapists, and osteopaths. DATA COLLECTION AND ANALYSIS Two review authors independently conducted the study selection and risk of bias (RoB) assessment. Data extraction was checked by the second review author. The effects were examined in the following comparisons: SMT versus 1) inert interventions, 2) sham SMT, 3) other interventions, and 4) SMT as an additional therapy. In addition, we examined the effects of different SMT techniques compared to one another. GRADE was used to assess the quality of the evidence. Authors were contacted, where possible, for missing or unclear data. Outcomes were evaluated at the following time intervals: short-term (one week and one month), intermediate (three to six months), and long-term (12 months or longer). Clinical relevance was defined as: 1) small, mean difference (MD) < 10% of the scale or standardized mean difference (SMD) < 0.4; 2) medium, MD = 10% to 20% of the scale or SMD = 0.41 to 0.7; and 3) large, MD > 20% of the scale or SMD > 0.7. MAIN RESULTS We identified 20 RCTs (total number of participants = 2674), 12 (60%) of which were not included in the previous review. Sample sizes ranged from 36 to 323 (median (IQR) = 108 (61 to 189)). In total, six trials (30% of all included studies) had a low RoB. At most, three RCTs could be identified per comparison, outcome, and time interval; therefore, the amount of data should not be considered robust. In general, for the primary outcomes, there is low to very low quality evidence suggesting no difference in effect for SMT when compared to inert interventions, sham SMT, or when added to another intervention. There was varying quality of evidence (from very low to moderate) suggesting no difference in effect for SMT when compared with other interventions, with the exception of low quality evidence from one trial demonstrating a significant and moderately clinically relevant short-term effect of SMT on pain relief when compared to inert interventions, as well as low quality evidence demonstrating a significant short-term and moderately clinically relevant effect of SMT on functional status when added to another intervention. In general, side-lying and supine thrust SMT techniques demonstrate a short-term significant difference when compared to non-thrust SMT techniques for the outcomes of pain, functional status, and recovery. AUTHORS' CONCLUSIONS SMT is no more effective in participants with acute low-back pain than inert interventions, sham SMT, or when added to another intervention. SMT also appears to be no better than other recommended therapies. Our evaluation is limited by the small number of studies per comparison, outcome, and time interval. Therefore, future research is likely to have an important impact on these estimates. The decision to refer patients for SMT should be based upon costs, preferences of the patients and providers, and relative safety of SMT compared to other treatment options. Future RCTs should examine specific subgroups and include an economic evaluation.
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Affiliation(s)
- Sidney M Rubinstein
- Department of Epidemiology and Biostatistics, EMGO Institute for Health and Care Research, VU University Medical Center,Amsterdam, Netherlands.
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Rubinstein SM, Terwee CB, de Boer MR, van Tulder MW. Is the methodological quality of trials on spinal manipulative therapy for low-back pain improving? INT J OSTEOPATH MED 2012. [DOI: 10.1016/j.ijosm.2012.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Koppenhaver SL, Fritz JM, Hebert JJ, Kawchuk GN, Parent EC, Gill NW, Childs JD, Teyhen DS. Association between history and physical examination factors and change in lumbar multifidus muscle thickness after spinal manipulation in patients with low back pain. J Electromyogr Kinesiol 2012; 22:724-31. [PMID: 22516351 DOI: 10.1016/j.jelekin.2012.03.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 02/06/2012] [Accepted: 03/07/2012] [Indexed: 12/19/2022] Open
Abstract
Understanding the clinical characteristics of patients with low back pain (LBP) who display improved lumbar multifidus (LM) muscle function after spinal manipulative therapy (SMT) may provide insight into a potentially synergistic interaction between SMT and exercise. Therefore, the purpose of this study was to identify the baseline historical and physical examination factors associated with increased contracted LM muscle thickness one week after SMT. Eighty-one participants with LBP underwent a baseline physical examination and ultrasound imaging assessment of the LM muscle during submaximal contraction before and one week after SMT. The relationship between baseline examination variables and 1-week change in contracted LM thickness was assessed using correlation analysis and hierarchical multiple linear regression. Four variables best predicted the magnitude of increases in contracted LM muscle thickness after SMT. When combined, these variables suggest that patients with LBP, (1) that are fairly acute, (2) have at least a moderately good prognosis without focal and irritable symptoms, and (3) exhibit signs of spinal instability, may be the best candidates for a combined SMT and lumbar stabilization exercise (LSE) treatment approach.
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Affiliation(s)
- Shane L Koppenhaver
- U.S. Army-Baylor University, Doctoral Program in Physical Therapy, San Antonio, TX, USA.
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A systematic review and meta-analysis of efficacy, cost-effectiveness, and safety of selected complementary and alternative medicine for neck and low-back pain. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2012:953139. [PMID: 22203884 PMCID: PMC3236015 DOI: 10.1155/2012/953139] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 05/14/2011] [Indexed: 01/31/2023]
Abstract
Background. Back pain is a common problem and a major cause of disability and health care utilization. Purpose. To evaluate the efficacy, harms, and costs of the most common CAM treatments (acupuncture, massage, spinal manipulation, and mobilization) for neck/low-back pain. Data Sources. Records without language restriction from various databases up to February 2010. Data Extraction. The efficacy outcomes of interest were pain intensity and disability. Data Synthesis. Reports of 147 randomized trials and 5 nonrandomized studies were included. CAM treatments were more effective in reducing pain and disability compared to no treatment, physical therapy (exercise and/or electrotherapy) or usual care immediately or at short-term follow-up. Trials that applied sham-acupuncture tended towards statistically nonsignificant results. In several studies, acupuncture caused bleeding on the site of application, and manipulation and massage caused pain episodes of mild and transient nature. Conclusions. CAM treatments were significantly more efficacious than no treatment, placebo, physical therapy, or usual care in reducing pain immediately or at short-term after treatment. CAM therapies did not significantly reduce disability compared to sham. None of the CAM treatments was shown systematically as superior to one another. More efforts are needed to improve the conduct and reporting of studies of CAM treatments.
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Abstract
STUDY DESIGN Systematic review of interventions. OBJECTIVE To assess the effects of spinal manipulative therapy (SMT) for chronic low-back pain. SUMMARY OF BACKGROUND DATA SMT is one of the many therapies for the treatment of low-back pain, which is a worldwide, extensively practiced intervention. METHODS Search methods. An experienced librarian searched for randomized controlled trials (RCTs) in multiple databases up to June 2009. Selection criteria. RCTs that examined manipulation or mobilization in adults with chronic low-back pain were included. The primary outcomes were pain, functional status, and perceived recovery. Secondary outcomes were return-to-work and quality of life. Data collection and analysis. Two authors independently conducted the study selection, risk of bias assessment, and data extraction. GRADE was used to assess the quality of the evidence. RESULTS We included 26 RCTs (total participants = 6070), 9 of which had a low risk of bias. Approximately two-thirds of the included studies (N = 18) were not evaluated in the previous review. There is a high-quality evidence that SMT has a small, significant, but not clinically relevant, short-term effect on pain relief (mean difference -4.16, 95% confidence interval -6.97 to -1.36) and functional status (standardized mean difference -0.22, 95% confidence interval -0.36 to -0.07) in comparison with other interventions. There is varying quality of evidence that SMT has a significant short-term effect on pain relief and functional status when added to another intervention. There is a very low-quality evidence that SMT is not more effective than inert interventions or sham SMT for short-term pain relief or functional status. Data were particularly sparse for recovery, return-to-work, quality of life, and costs of care. No serious complications were observed with SMT. CONCLUSIONS High-quality evidence suggests that there is no clinically relevant difference between SMT and other interventions for reducing pain and improving function in patients with chronic low-back pain. Determining cost-effectiveness of care has high priority.
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Schulz CA, Hondras MA, Evans RL, Gudavalli MR, Long CR, Owens EF, Wilder DG, Bronfort G. Chiropractic and self-care for back-related leg pain: design of a randomized clinical trial. Chiropr Man Therap 2011; 19:8. [PMID: 21426558 PMCID: PMC3072925 DOI: 10.1186/2045-709x-19-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 03/22/2011] [Indexed: 01/07/2023] Open
Abstract
Background Back-related leg pain (BRLP) is a common variation of low back pain (LBP), with lifetime prevalence estimates as high as 40%. Often disabling, BRLP accounts for greater work loss, recurrences, and higher costs than uncomplicated LBP and more often leads to surgery with a lifetime incidence of 10% for those with severe BRLP, compared to 1-2% for those with LBP. In the US, half of those with back-related conditions seek CAM treatments, the most common of which is chiropractic care. While there is preliminary evidence suggesting chiropractic spinal manipulative therapy is beneficial for patients with BRLP, there is insufficient evidence currently available to assess the effectiveness of this care. Methods/Design This study is a two-site, prospective, parallel group, observer-blinded randomized clinical trial (RCT). A total of 192 study patients will be recruited from the Twin Cities, MN (n = 122) and Quad Cities area in Iowa and Illinois (n = 70) to the research clinics at WHCCS and PCCR, respectively. It compares two interventions: chiropractic spinal manipulative therapy (SMT) plus home exercise program (HEP) to HEP alone (minimal intervention comparison) for patients with subacute or chronic back-related leg pain. Discussion Back-related leg pain (BRLP) is a costly and often disabling variation of the ubiquitous back pain conditions. As health care costs continue to climb, the search for effective treatments with few side-effects is critical. While SMT is the most commonly sought CAM treatment for LBP sufferers, there is only a small, albeit promising, body of research to support its use for patients with BRLP. This study seeks to fill a critical gap in the LBP literature by performing the first full scale RCT assessing chiropractic SMT for patients with sub-acute or chronic BRLP using important patient-oriented and objective biomechanical outcome measures. Trial Registration ClinicalTrials.gov NCT00494065
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Affiliation(s)
- Craig A Schulz
- Northwestern Health Sciences University, Wolfe-Harris Center for Clinical Studies, 2501 West 84th Street, Bloomington, MN 55431, USA.
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Rubinstein SM, van Middelkoop M, Assendelft WJ, de Boer MR, van Tulder MW. Spinal manipulative therapy for chronic low-back pain. Cochrane Database Syst Rev 2011:CD008112. [PMID: 21328304 DOI: 10.1002/14651858.cd008112.pub2] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Many therapies exist for the treatment of low-back pain including spinal manipulative therapy (SMT), which is a worldwide, extensively practiced intervention. OBJECTIVES To assess the effects of SMT for chronic low-back pain. SEARCH STRATEGY An updated search was conducted by an experienced librarian to June 2009 for randomised controlled trials (RCTs) in CENTRAL (The Cochrane Library 2009, issue 2), MEDLINE, EMBASE, CINAHL, PEDro, and the Index to Chiropractic Literature. SELECTION CRITERIA RCTs which examined the effectiveness of spinal manipulation or mobilisation in adults with chronic low-back pain were included. No restrictions were placed on the setting or type of pain; studies which exclusively examined sciatica were excluded. The primary outcomes were pain, functional status and perceived recovery. Secondary outcomes were return-to-work and quality of life. DATA COLLECTION AND ANALYSIS Two review authors independently conducted the study selection, risk of bias assessment and data extraction. GRADE was used to assess the quality of the evidence. Sensitivity analyses and investigation of heterogeneity were performed, where possible, for the meta-analyses. MAIN RESULTS We included 26 RCTs (total participants = 6070), nine of which had a low risk of bias. Approximately two-thirds of the included studies (N = 18) were not evaluated in the previous review. In general, there is high quality evidence that SMT has a small, statistically significant but not clinically relevant, short-term effect on pain relief (MD: -4.16, 95% CI -6.97 to -1.36) and functional status (SMD: -0.22, 95% CI -0.36 to -0.07) compared to other interventions. Sensitivity analyses confirmed the robustness of these findings. There is varying quality of evidence (ranging from low to high) that SMT has a statistically significant short-term effect on pain relief and functional status when added to another intervention. There is very low quality evidence that SMT is not statistically significantly more effective than inert interventions or sham SMT for short-term pain relief or functional status. Data were particularly sparse for recovery, return-to-work, quality of life, and costs of care. No serious complications were observed with SMT. AUTHORS' CONCLUSIONS High quality evidence suggests that there is no clinically relevant difference between SMT and other interventions for reducing pain and improving function in patients with chronic low-back pain. Determining cost-effectiveness of care has high priority. Further research is likely to have an important impact on our confidence in the estimate of effect in relation to inert interventions and sham SMT, and data related to recovery.
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Affiliation(s)
- Sidney M Rubinstein
- Department of Epidemiology and Biostatistics, EMGO Institute for Health and Care Research, VU University Medical Center, PO Box 7057, Room D518, Amsterdam, Netherlands, 1007 MB
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Leininger B, Bronfort G, Evans R, Reiter T. Spinal manipulation or mobilization for radiculopathy: a systematic review. Phys Med Rehabil Clin N Am 2010; 22:105-25. [PMID: 21292148 DOI: 10.1016/j.pmr.2010.11.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this systematic review, we present a comprehensive and up-to-date systematic review of the literature as it relates to the efficacy and effectiveness of spinal manipulation or mobilization in the management of cervical, thoracic, and lumbar-related extremity pain. There is moderate quality evidence that spinal manipulation is effective for the treatment of acute lumbar radiculopathy. The quality of evidence for chronic lumbar spine-related extremity symptoms and cervical spine-related extremity symptoms of any duration is low or very low. At present, no evidence exists for the treatment of thoracic radiculopathy. Future high-quality studies should address these conditions.
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Affiliation(s)
- Brent Leininger
- Wolfe-Harris Center for Clinical Studies, Northwestern Health Sciences University, 2501 West 84th Street, Bloomington, MN 55431, USA.
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Rubinstein SM, Terwee C, Assendelft WJJ, de Boer MR, van Tulder MW. Spinal manipulation for acute low-back pain. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2010. [DOI: 10.1002/14651858.cd008880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Day JM, McKeon P, Nitz A. The efficacy of cervical/thoracic active range of motion for detecting changes associated with individuals receiving muscle energy techniques. PHYSICAL THERAPY REVIEWS 2010. [DOI: 10.1179/1743288x10y.0000000020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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NASS Contemporary Concepts in Spine Care: spinal manipulation therapy for acute low back pain. Spine J 2010; 10:918-40. [PMID: 20869008 DOI: 10.1016/j.spinee.2010.07.389] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Revised: 07/01/2010] [Accepted: 07/26/2010] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Low back pain (LBP) continues to be a very prevalent, disabling, and costly spinal disorder. Numerous interventions are routinely used for symptoms of acute LBP. One of the most common approaches is spinal manipulation therapy (SMT). PURPOSE To assess the current scientific literature related to SMT for acute LBP. PATIENT SAMPLE Not applicable. OUTCOME MEASURES Not applicable. DESIGN Systematic review (SR). METHODS Literature was identified by searching MEDLINE using indexed and free text terms. Studies were included if they were randomized controlled trials (RCTs) published in English, and SMT was administered to a group of patients with LBP of less than 3 months. RCTs included in two previous SRs were also screened, as were reference lists of included studies. Combined search results were screened for relevance by two reviewers. Data related to methods, risk of bias, harms, and results were abstracted independently by two reviewers. RESULTS The MEDLINE search returned 699 studies, of which six were included; an additional eight studies were identified from two previous SRs. There were 2,027 participants in the 14 included RCTs, which combined SMT with education (n=5), mobilization (MOB) (n=4), exercise (n=3), modalities (n=3), or medication (n=2). The groups that received SMT were most commonly compared with those receiving physical modalities (n=7), education (n=6), medication (n=5), exercise (n=5), MOB (n=3), or sham SMT (n=2). The most common providers of SMT were chiropractors (n=5) and physical therapists (n=5). Most studies (n=6) administered 5 to 10 sessions of SMT over 2 to 4 weeks for acute LBP. Outcomes measured included pain (n=10), function (n=10), health-care utilization (n=6), and global effect (n=5). Studies had a follow-up of less than 1 month (n=7), 3 months (n=1), 6 months (n=3), 1 year (n=2), or 2 years (n=1). When compared with various control groups, results for improvement in pain in the SMT groups were superior in three RCTs and equivalent in three RCTs in the short term, equivalent in four RCTs in the intermediate term, and equivalent in two RCTs in the long term. For improvement in function, results from the SMT groups were superior in one RCT and equivalent in four RCTs in the short term, superior in one RCT and equivalent in one RCT in the intermediate term, and equivalent in one RCT and inferior in one RCT in the long term. No harms related to SMT were reported in these RCTs. CONCLUSIONS Several RCTs have been conducted to assess the efficacy of SMT for acute LBP using various methods. Results from most studies suggest that 5 to 10 sessions of SMT administered over 2 to 4 weeks achieve equivalent or superior improvement in pain and function when compared with other commonly used interventions, such as physical modalities, medication, education, or exercise, for short, intermediate, and long-term follow-up. Spine care clinicians should discuss the role of SMT as a treatment option for patients with acute LBP who do not find adequate symptomatic relief with self-care and education alone.
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Fritz JM, Cleland JA, Childs JD. Subgrouping patients with low back pain: evolution of a classification approach to physical therapy. J Orthop Sports Phys Ther 2007; 37:290-302. [PMID: 17612355 DOI: 10.2519/jospt.2007.2498] [Citation(s) in RCA: 226] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The development of valid classification methods to assist the physical therapy management of patients with low back pain has been recognized as a research priority. There is also growing evidence that the use of a classification approach to physical therapy results in better clinical outcomes than the use of alternative management approaches. In 1995 Delitto and colleagues proposed a classification system intended to inform and direct the physical therapy management of patients with low back pain. The system described 4 classifications of patients with low back pain (manipulation, stabilization, specific exercise, and traction). Each classification could be identified by a unique set of examination criteria, and was associated with an intervention strategy believed to result in the best outcomes for the patient. The system was based on expert opinion and research evidence available at the time. A substantial amount of research has emerged in the years since the introduction of this classification system, including the development of clinical prediction rules, providing new evidence for the examination criteria used to place a patient into a classification and for the optimal intervention strategies for each classification. New evidence should continually be incorporated into existing classification systems. The purpose of this clinical commentary is to review this classification system, its evolution and current status, and to discuss its implications for the classification of patients with low back pain.
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Affiliation(s)
- Julie M Fritz
- Division of Physical Therapy, University of Utah, Salt Lake City, UT, USA.
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Vautravers P. [Spinal manipulations in sciatica]. ANNALES DE READAPTATION ET DE MEDECINE PHYSIQUE : REVUE SCIENTIFIQUE DE LA SOCIETE FRANCAISE DE REEDUCATION FONCTIONNELLE DE READAPTATION ET DE MEDECINE PHYSIQUE 2006; 49:207-9. [PMID: 16564104 DOI: 10.1016/j.annrmp.2006.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2006] [Accepted: 02/09/2006] [Indexed: 05/08/2023]
Abstract
Spinal manipulations have been shown to be efficient for common low back pain; they remain an option in the treatment of symptomatic lumbar disk herniation. From data in the literature, the author discusses the interest of spinal manipulations with a "thrust" at the level of disk herniation and concludes that this therapy, performed by an experienced physician and under conditions of strict application, could be an option in the treatment of subacute and chronique disc herniation.
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Evans RL, Maiers MJ, Bronfort G. What do patients think? Results of a mixed methods pilot study assessing sciatica patients' interpretations of satisfaction and improvement. J Manipulative Physiol Ther 2004; 26:502-9. [PMID: 14569216 DOI: 10.1016/s0161-4754(03)00107-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Little is known about the issues low back pain patients take into account when deciding their satisfaction with care, the importance placed on such satisfaction, or the factors they consider when assessing their overall improvement. OBJECTIVE The purpose of this study was to explore these issues and to assess the feasibility of implementing qualitative research methods within a clinical trial. METHODS Study participants were volunteers taking part in a randomized clinical pilot study comparing nonsurgical treatments for sciatica. Face-to-face interviews were conducted, transcribed, and analyzed using content analysis. RESULTS All 31 individuals who participated in the pilot study were interviewed. When asked which issues they considered when deciding their satisfaction with care, the most frequently identified themes were change in pain, personnel, and the treatment experience. When assessing their overall improvement, all participants considered whether their pain had changed. In response to the question asking participants which outcomes they considered to be most important, severity of pain and quality of life were most commonly cited. CONCLUSION This study demonstrated that a "mixed methods" approach using qualitative research methods within a clinical trial is not only feasible but can provide interesting and useful information for trial interpretation and future study design. By providing insight to the multidimensional nature of patients' beliefs and perceptions, this technique may not only shape but also redefine the focus of patient-oriented research and health care for low back pain conditions.
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Affiliation(s)
- Roni L Evans
- Wolfe-Harris Center for Clinical Studies, Northwestern Health Sciences University, Bloomington, Minn. 55431, USA.
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