J Manipulative Physiol Ther. 2017 (Nov); 40 (9): 635–642 ~ FULL TEXT
Peter C. Emary, DC, MSc, Amy L. Brown, DC, Douglas F. Cameron, DC,
Alexander F. Pessoa, DC, ICSSP, Jennifer E. Bolton, PhD, MA Ed
Cambridge, Ontario, Canada.
OBJECTIVE: The purpose of this study was to evaluate a chiropractic service for back pain patients integrated within a publicly funded, multidisciplinary, primary care community health center in Cambridge, Ontario, Canada.
METHODS: Patients consulting for back pain of any duration were referred by their medical doctor or nurse practitioner for chiropractic treatment at the community health center. Patients completed questionnaires at baseline and at discharge from the service. Data were collected prospectively on consecutive patients between January 2014 and January 2016.
RESULTS: Questionnaire data were obtained from 93 patients. The mean age of the sample was 49.0 ± 16.27 years, and 66% were unemployed. More than three-quarters (77%) had had their back pain for more than a month, and 68% described it as constant. According to the Bournemouth Questionnaire, Bothersomeness, and global improvement scales, a majority (63%, 74%, and 93%, respectively) reported improvement at discharge, and most (82%) reported a significant reduction in pain medication. More than three-quarters (77%) did not visit their primary care provider while under chiropractic care, and almost all (93%) were satisfied with the service. According to the EuroQol 5 Domain questionnaire, more than one-third of patients (39%) also reported improvement in their general health state at discharge.
CONCLUSION: Implementation of an integrated chiropractic service was associated with high levels of improvement and patient satisfaction in a sample of patients of low socioeconomic status with subacute and chronic back pain.
KEYWORDS: Back Pain; Chiropractic; Community Health Centers; Health Services Research
From the FULL TEXT Article:
Back pain is a prevalent health problem in the general population and places a tremendous socioeconomic burden on society. Globally, an average of nearly 40% of individuals will experience low back pain at some point in their life, and approximately 1 in 5 are afflicted at any given time.  Low back pain is the leading cause of years lived with disability  and is among the most common reasons for visiting a primary care physician. [3, 4] As the world’s population ages, the number of people with back pain and other musculoskeletal disorders is expected to rise. [1, 4] Moreover, these conditions are costly. In Canada, for example, musculoskeletal conditions rank third behind only cardiovascular and neuropsychiatric disorders with respect to medical expenditures (ie, physician services, pharmaceuticals, and hospital care).  The societal burden of back pain in terms of economic costs and health resource utilization is also greater among patients with multiple comorbidities, including those of low socioeconomic status. [6–9]
There is evidence to support chiropractic care, including spinal manipulation, as an effective and relatively cost-effective intervention in managing patients with back pain and other musculoskeletal conditions, [10–15] and patients typically report high levels of satisfaction with treatment. [14–16] Despite this, access to chiropractic services is not routinely available through publicly funded health care systems in most countries around the world. As such, patients must either use insurance benefits (if any) or pay out-of-pocket for chiropractic treatment. This presents a significant barrier for lower-income groups including the unemployed. 
In Ontario, Canada, chiropractic care is not publicly funded. However, as low back pain is such a common problem, the government is looking at different ways to address this. For instance, the provincial government, under its Low Back Pain Strategy, recently announced the provision of limited, one-time pilot funding for the integration of allied health care providers, including chiropractors, within a select number of interprofessional primary care team settings.  Notably, chiropractors were also added to the list of health professionals eligible to be employed by these teams.  The objective of these initiatives is to improve the management of low back pain in primary care in Ontario, as provided in nurse practitioner-led clinics, family health teams, aboriginal health access centers, and community health centers. [18, 19]
Community health centers (CHCs) are nonprofit, publicly funded organizations that provide primary health care traditionally from a team of medical doctors, nurse practitioners, registered nurses, dieticians, social workers, and community health workers.  The focus of a CHC is on health promotion, illness prevention, and community development. Its services are provided to priority populations who experience barriers to access (eg, language, culture, physical disabilities, homelessness, and poverty), as well as isolated seniors, at-risk children and youths, and individuals with mental health or addiction issues. Musculoskeletal disorders, including chronic back pain, are prevalent among these patient populations, [17, 21] yet many have traditionally faced barriers to accessing chiropractic care.
In Cambridge, Ontario, Canada, a self-directed group of chiropractors from the Waterloo Regional Chiropractic Society recently established an agreement with the Langs organization  to provide a partially subsidized chiropractic service within their CHC. The agreement was reached after several face-to-face discussions between the chiropractors and the executive staff of Langs, with the goal of creating access to chiropractic care for back pain-related disorders in a community with limited access to health care services. From its inception in January 2014, this program has been completely integrated, and all participating chiropractors to date have had full access to the Center’s electronic medical records system. Yet, despite being a novel initiative for Langs, this is not the first program of its kind in Canada. Successful integration of chiropractic has previously been described within 3 other CHCs in the provinces of Ontario [21, 23, 24] and Manitoba, Canada.  However, studies evaluating or demonstrating the value of these services within other Canadian CHC settings are scarce. The aim of this study was to describe a service provided by chiropractors for back pain patients integrated within a multidisciplinary primary care CHC setting using a health services research design and focused on patient-reported outcomes and satisfaction with treatment.
This study evaluated a chiropractic service for back pain patients within a primary care CHC setting, which on average lasted for a period of 10 weeks. Findings indicated that this was a typical back pain population in terms of age and sex, although for this age range the proportion in paid employment was low. The relatively high proportion not in employment (66%) in this group is comparable to the findings of other investigations of chiropractic integration within Canadian CHC settings. [21, 25] In a retrospective database review from a CHC in Winnipeg, Manitoba, Canada,  Passmore et al found the unemployment rate among a cohort of 177 chiropractic patients to be very high at 86%. Of 324 chiropractic patients attending 2 CHCs in Ottawa, Ontario, Canada,  Garner et al also found that nearly two-thirds (62%) were living at or below the poverty line. These socioeconomic findings contrast with those typically found among chiropractic patients who present in private practice settings. For instance, in 2 large studies involving patients from North America  and the United Kingdom,  68% and 82.1%, respectively, of those who used chiropractic services indicated that they were in paid employment. Unemployed patients (as well as other low-income groups) often face significant barriers to accessing chiropractic care largely because of inadequate insurance coverage. [17, 21, 25] A major implication with integrating chiropractors into publicly funded CHC settings, therefore, is that unemployed and/or economically disadvantaged individuals can gain access to chiropractic services for which most would not have otherwise.
Most of the patients in this study reported constant and more widespread pain longer than 1 month. Unlike acute back pain, which often resolves within days, subacute and chronic back pain can lead to high levels of disability and dependency. It is therefore important to manage this condition effectively as soon as possible so that these potential poor outcomes are not realized. Chronic back pain is common among complex patient populations including those of low socioeconomic status and has been reported in several studies to be significantly associated with increased comorbidity, analgesic use, health care utilization, and costs. [6-9] In the 2 aforementioned studies of chiropractic integration in Canadian CHCs, [21, 25] musculoskeletal complaints including chronic back pain were prevalent, with the large majority of patients reporting the presence of these and other chronic health conditions. These findings are once again contrary to the typical demographic and clinical characteristics of patients who present in private chiropractic practices. [35, 36] In the study by Hurwitz and Chiang,  for example, the large majority of patients who used chiropractic services rated themselves in good-to-excellent health. Compared with non-chiropractic users (ie, those who visited only their general physician), chiropractic patients also reported fewer chronic health problems. 
The findings of the current evaluation indicated that most patients referred to this service pathway reported good outcomes at discharge. Moreover, almost all patients, irrespective of their outcome, reported high levels of satisfaction with the service. Significant improvements regarding musculoskeletal pain and/or disability were found by Garner et al  and Passmore et al  in their respective studies involving integrated chiropractic services at CHCs in Ontario and Manitoba, Canada. Similar to the current study, Garner et al  also found that nearly all patients (97.7%) were either very satisfied or satisfied with the chiropractic care they received. These treatment and satisfaction outcomes are in line with the findings of numerous other studies in which patients have reported positive outcomes and have been generally highly satisfied with care provided by chiropractors. [14, 15, 16, 28] Of note, very few patients in the current study indicated that they were “completely better” at the point of discharge from this service. Despite the majority reporting that they were “much better,” the fact that most were not completely so may be a reflection of the nature of chronic back pain, which is often persistent and recurrent.  The finding that very few patients reported themselves as being completely better in the current study also highlights the potential challenges, and consequent need for multidisciplinary collaboration, in managing the complex needs of CHC patients. [20, 21, 13, 25]
As expected, the 3 questionnaires used in this evaluation that referred specifically to the patient’s back pain (BQ and Bothersomeness and global improvement scales) were more responsive in detecting change in the patient’s condition than the generic health status measure (EQ-5D). The EQ-5D is used mainly in studies where there is a comparator group, for example, cost-effectiveness studies,  to calculate a utility score and gain in quality-adjusted life years. Where there is no comparator, as was the case in this study, these calculations are not possible, so a change in the patient’s EQ-5D profile is the limit of what can be achieved. Nevertheless, the EQ-5D is a useful metric, particularly when used to compare outcomes in patients’ health status between interventions for different conditions, so as to provide evidence on which to base the prioritization of health care funds. The data from the EQ-5D were included here to illustrate how change in health status in a group of patients undergoing a particular intervention can be presented and used in future service evaluation studies.
Taken overall, it can be concluded that this particular chiropractic service resulted in improved outcomes and high levels of satisfaction in a sample of complex CHC patients with subacute and chronic back pain. These findings, as well as those of other studies involving chiropractic integration within CHC settings, [21, 24, 25] have several important implications. First and foremost, by integrating chiropractors into multidisciplinary primary care CHCs, socioeconomically disadvantaged patients gain access to chiropractic services. For instance, prior to the introduction of the current program, chiropractic had never been offered at the Langs CHC. In addition, this program only accepted patients who were not under the care of another chiropractor. Therefore, with this service, the accessibility of chiropractic care increased by 100% for this particular cohort of patients.
With chiropractic integration into primary care, the burden on medical physicians (in terms of managing all patients including those with back pain) can also be reduced, thus decreasing wait times for other patients trying to see them. In the current study, for example, more than three-quarters of patients reported that they did not seek help for their back pain from any other health provider throughout the entire course of their treatment. In theory, this would have opened up appointments for Langs’ physicians and nurse practitioners to see other patients, particularly those with more complex medical conditions. In 2011, at the Mount Carmel CHC Clinic in Winnipeg, Manitoba, Canada,  chiropractic consultation visits saved 82% (132/161) of patients from making an additional appointment with their primary care physician. Furthermore, when discharged from chiropractic treatment, very few (4%) of these patients were referred to another health provider for additional care.  Other studies have similarly found decreases in primary care physician visits when patients were referred for chiropractic treatment. 
Another important implication of integrating chiropractors into primary care CHC settings is that these initiatives create interprofessional collaboration. In doing so, this can improve the quality and delivery of back pain services within these centers. For instance, there is evidence to suggest that greater communication between chiropractors and medical providers in collaborative primary care settings leads to improved continuity of care (ie, care delivered in a coordinated and timely manner).  Anecdotally, there was good communication between the chiropractors and medical physicians and nurse practitioners at the Langs CHC throughout the duration of this program. Because the chiropractors were integrated directly onto the Center’s electronic medical records system, chiropractic-medical provider communication was timely and efficient.
Integration of chiropractors within CHC settings also holds the potential for significant health cost savings (eg, reduced medical referrals for spine-related diagnostic imaging, surgery, and pharmaceuticals). This is particularly the case when considering the complexity of people who have chronic back pain, [6–9] including those who present within CHCs. [20, 21, 23, 25] Tracking of spine-related diagnostic imaging and surgical referrals was beyond the scope of the current service evaluation. Nevertheless, more than 8 of every 10 patients seen within the Langs clinic and followed through to discharge reported that they did not take medication or had managed to significantly reduce their medication usage for their pain with chiropractic treatment. Decreased medication usage by patients referred for chiropractic services has been previously reported in other studies as well. [14, 28, 38, 39]
In the light of the positive treatment outcomes and patient satisfaction levels reported in the current study and others, [21, 25] further research and integration of chiropractic services within CHC settings are warranted. Future studies should include the number of primary care visits and diagnostic imaging and surgical referrals saved via integration. Qualitative investigation of physicians’ and/or other health providers’ attitudes toward chiropractors and their inclusion within multidisciplinary CHC teams should also be explored. 
A limitation of this study is the relatively small number of patients that were recruited and followed through to discharge. In all pragmatic studies, which, by their nature, are not conducted in a highly controlled research environment, there is likely to be a relatively high number of dropouts, as was the case here. Although we did not impute any values for missing data in the follow-up period, we are not aware of any systematic differences between those patients who did and did not complete follow-up questionnaires. For example, there were no differences in sex, age, and severity of their condition (as measured by baseline total BQ scores) between these 2 patient samples. A further limitation is there was no control or comparator group. Therefore, it is unclear if the patients’ outcomes were as a result of their treatment(s). It is also possible that some patients may have been predisposed to respond favorably because this was a complimentary chiropractic service. In keeping with all health service evaluation studies,  this study describes what happens to patients undergoing treatment rather than “cause and effect,” which can only be investigated using a controlled design. Regardless, the vast majority of patients in this study reported having pain for more than 1 month (and many for considerably longer). It is therefore unlikely that natural history accounted in any significant manner for the outcomes observed. Finally, in line with health service evaluation designs,  the strength of this study resides in the real-time evaluation of a locally based new service rather than in determining the efficacy of a treatment intervention. As such, caution is required in extrapolating the findings to other care pathways.
This study evaluated a new back pain service provided by chiropractors integrated into a primary care CHC setting. Overall, this service was associated with high levels of improvement and patient satisfaction in a sample of complex CHC patients with subacute and chronic back pain. These outcomes, including those of other studies, may have important implications for patients, policy decision makers, and health care stakeholders. Future research of chiropractic services within CHC settings is warranted.
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