Measurement Properties and Minimal Important Change of the World Health Organization Disability Assessment Schedule 2.0 in Persons With Low Back Pain: A Systematic Review.

OBJECTIVE: To determine the measurement properties and minimal important change (MIC) of the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) short (12 questions) and full (36 questions) versions in persons with nonspecific low back pain (LBP). DATA SOURCES: MEDLINE, Embase, Cumulative Index to Nursing and Allied Health Literature, APA PsycInfo, and Cochrane Central Register of Controlled Trials (inception to May 2021). STUDY SELECTION: Eligible studies assessed measurement properties or MIC of WHODAS 2.0 in persons with LBP. DATA EXTRACTION: Paired reviewers screened articles, extracted data, and assessed risk of bias using Consensus-Based Standards for Selection of Health Measurement Instruments (COSMIN) and COSMIN-Outcome Measures in Rheumatology checklists. DATA SYNTHESIS: We descriptively synthesized results stratified by measurement property and LBP duration (subacute: 6 weeks to 3 months; chronic: ≥3 months). RESULTS: We screened 297 citations and included 14 studies (reported in 15 articles). Methodological quality of studies was very good for internal consistency and varied between very good and doubtful for construct validity, doubtful for responsiveness, and adequate for all other properties assessed. Evidence suggests that WHODAS 2.0 full version has adequate content validity (2 studies); WHODAS 2.0 short and full versions have adequate structural validity (3 studies), but construct validity is indeterminate (9 studies). WHODAS 2.0 short and full versions have adequate internal consistency (10 studies), and the full version has adequate test-retest and interrater reliability (3 studies) in persons with LBP. Minimal detectable change (MDC) was 10.45-13.99 of 100 for the full version and 8.6 of 48 for the short version in persons with LBP (4 studies). WHODAS 2.0 full version has no floor or ceiling effects, but the short version has potential floor effects in persons with chronic LBP (3 studies). One study estimated MIC for the full version as 4.87 of 100 or 9.74 of 100 (corresponding to 1- and 2-point change on 0- to 10-cm visual analog scale for pain, respectively), and 1 study estimated 3.09-4.68 of 48 for the short version. CONCLUSIONS: In persons with LBP, WHODAS 2.0 full version has adequate content validity, structural validity, internal consistency, and reliability. WHODAS 2.0 short version has adequate structural validity and internal consistency. Construct validity of the short and full versions is indeterminate. Since MDC is estimated to be larger than MIC, users may consider both MIC and MDC thresholds to measure change in functioning for LBP.

The Immediate Effect of Spinal Manipulation on Ball Velocity and Neuromuscular Function During an Instep Kick in Former Varsity Soccer Players: A Feasibility Study.

ABSTRACT: Corso, M, Liang, L, Tran, S, Howitt, S, Srbely, J, and Mior, SA. The immediate effect of spinal manipulation on ball velocity and neuromuscular function during an instep kick in former Varsity soccer players: a feasibility study. J Strength Cond Res 36(9): 2558-2565, 2022-Spinal manipulation (SM) has been shown to increase ball velocity (BV) in soccer players. Evidence suggests that SM modulates responses at spinal or cortical levels to enhance force production in asymptomatic populations. No studies have explored the underlying neuromuscular mechanisms contributing to changes in BV post-SM in soccer players. We assessed the feasibility of measuring change in BV and neuromuscular function after SM in former Varsity level soccer players with a pre-post study design. Three to 5 maximal instep kicks were performed before and after SM at the L3-5 level. Ball velocity was measured using high-speed camera. Activation of lower limb and trunk musculature was recorded with electromyography. Outcomes included ease of recruitment, scheduling and data capture, as well as expectation and perception of SM effect and adverse events (AE). Fifteen potential subjects were recruited over 1.5 months. Eleven were scheduled (24-31 years; 8 females, 3 males). Two subjects reported mild AE after maximal voluntary isometric contraction testing. A significant increase in BV (mean change: 1.75 m·s -1 [95% confidence interval: 0.5-3.0]) and a trend to increased peak-activation of knee extensors (90.7%) were observed post-SM. Findings suggest that our recruitment strategy and methodology are feasible in a larger trial with some modifications. Our preliminary findings support previous research by suggesting that increased BV may be mediated through increased activation of knee extensors during the kick. Our findings may offer additional insight into the underlying neuromuscular mechanisms contributing to immediate change in BV post-SM.

An Investigation of Chiropractor-Directed Weight-Loss Interventions: Secondary Analysis of O-COAST.

OBJECTIVE: The purpose of this study was to investigate weight-loss interventions offered by Canadian doctors of chiropractic to their adult patients. METHODS: This paper reports a secondary analysis of data from the Ontario Chiropractic Observation and Analysis STudy (Nc = 42 chiropractors, Np = 2162 patient encounters). Multilevel logistic regression was performed to assess the odds of chiropractors initiating or continuing weight management interventions with patients. Two chiropractor variables and 8 patient-level variables were investigated for influence on chiropractor-directed weight management. In addition, the interaction between the effects of patient weight and comorbidity on weight management interventions by chiropractors was assessed. RESULTS: Around two-thirds (61.3%) of patients who sought chiropractic care were either overweight or had obesity. Very few patients had weight loss managed by their chiropractor. Among patients with body mass index equal to or greater than 18.5 kg/m2, guideline recommended weight management was initiated or continued by Ontario chiropractors in only 5.4% of encounters. Chiropractors did not offer weight management interventions at different rates among patients who were of normal weight, overweight, or obese (P value = 0.23). Chiropractors who graduated after 2005 who may have been exposed to reforms in chiropractic education to include public health were significantly more likely to offer weight management than chiropractors who graduated between 1995 and 2005 (odds ratio 0.02; 95% CI [0.00-0.13]) or before 1995 (odds ratio 0.08; 95% CI [0.01-0.42]). CONCLUSION: The prevalence of weight management interventions offered to patients by Canadian chiropractors in Ontario was low. Health care policy and continued chiropractic educational reforms may provide further direction to improve weight-loss interventions offered by doctors of chiropractic to their patients.

Patients' Experiences With Vehicle Collision to Inform the Development of Clinical Practice Guidelines: A Narrative Inquiry.

OBJECTIVE: The purpose of this narrative inquiry was to explore the experiences of persons who were injured in traffic collisions and seek their recommendations for the development of clinical practice guideline (CPG) for the management of minor traffic injuries. METHODS: Patients receiving care for traffic injuries were recruited from 4 clinics in Ontario, Canada resulting in 11 adult participants (5 men, 6 women). Eight were injured while driving cars, 1 was injured on a motorcycle, 2 were pedestrians, and none caused the collision. Using narrative inquiry methodology, initial interviews were audiotaped, and follow-up interviews were held within 2 weeks to extend the story of experience created from the first interview. Narrative plotlines across the 11 stories were identified, and a composite story inclusive of all recommendations was developed by the authors. The research findings and composite narrative were used to inform the CPG Expert Panel in the development of new CPGs. RESULTS: Four recommended directions were identified from the narrative inquiry process and applied. First, terminology that caused stigma was a concern. This resulted in modified language ("injured persons") being adopted by the Expert Panel, and a new nomenclature categorizing layers of injury was identified. Second, participants valued being engaged as partners with health care practitioners. This resulted in inclusion of shared decision-making as a foundational recommendation connecting CPGs and care planning. Third, emotional distress was recognized as a factor in recovery. Therefore, the importance of early detection and the ongoing evaluation of risk factors for delayed recovery were included in all CPGs. Fourth, participants shared that they were unfamiliar with the health care system and insurance industry before their accident. Thus, repeatedly orienting injured persons to the system was advised. CONCLUSION: A narrative inquiry of 11 patients' experiences with traffic collision and their recommendations for clinical guidelines informed the Ontario Protocol for Traffic Injury Management Collaboration in the development of new Minor Injury Guidelines. The values and findings of the qualitative inquiry were interwoven into each clinical pathway and embedded within the final guideline report submitted to government.

Examination of the relationship between theory-driven policies and allowed lost-time back claims in workers' compensation: a system dynamics model.

OBJECTIVE: The purpose of this study was to develop a model that evaluates the impact of policy changes on the number of workers' compensation lost-time back claims in Ontario, Canada, over a 30-year timeframe. The model was used to test the hypothesis that a theory- and policy-driven model would be sufficient in reproducing historical claims data in a robust manner and that policy changes would have a major impact on modeled data. METHODS: The model was developed using system dynamics methods in the Vensim simulation program. The theoretical effects of policies for compensation benefit levels and experience rating fees were modeled. The model was built and validated using historical claims data from 1980 to 2009. Sensitivity analysis was used to evaluate the modeled data at extreme end points of variable input and timeframes. The degree of predictive value of the modeled data was measured by the coefficient of determination, root mean square error, and Theil's inequality coefficients. RESULTS: Correlation between modeled data and actual data was found to be meaningful (R(2) = 0.934), and the modeled data were stable at extreme end points. Among the effects explored, policy changes were found to be relatively minor drivers of back claims data, accounting for a 13% improvement in error. Simulation results suggested that unemployment, number of no-lost-time claims, number of injuries per worker, and recovery rate from back injuries outside of claims management to be sensitive drivers of back claims data. CONCLUSION: A robust systems-based model was developed and tested for use in future policy research in Ontario's workers' compensation. The study findings suggest that certain areas within and outside the workers' compensation system need to be considered when evaluating and changing policies around back claims.

Prevalence and characteristics of healthcare utilization with different providers among Canadians with chronic back problems: A population-based study.

Introduction: Understanding healthcare utilization by Canadians with back problems informs healthcare planning nationally. Research question: What is the prevalence of utilization of healthcare providers (medical doctors, chiropractors, physiotherapists, nurses), and associated characteristics among Canadians with chronic back problems (2001-2016)? Material and methods: This population-based study used Canadian Community Health Survey data (2001-2016) restricted to respondents with chronic back problems (aged ≥12 years). We used self-reported consultation with healthcare providers (medical doctors, chiropractors, physiotherapists, nurses) from 2001-2010, and self-reported regular healthcare provider from 2015-2016. We calculated the 12-month prevalence of utilization with providers, and used modified Poisson regression to assess sociodemographic, health-related and behavioural factors associated with utilization of different providers. Results: From 2001 to 2010 and 2015/2016, respectively, prevalence of utilization of medical doctors was 87.9% (95% CI 87.6-88.2) and 86.7% (95% CI 85.9-87.5); chiropractors 24.0% (95% CI 23.6-24.4) and 14.5% (95% CI 13.8-15.3); physiotherapists 17.2% (95% CI 16.9-17.6) and 10.7% (95% CI 10.0-11.4); nurses 14.0% (95% CI 13.7-14.2) and 6.6% (95% CI 6.1-7.0). Females were more likely to see any provider than males. Persons of lower socioeconomic status were less likely to consult chiropractors or physiotherapists (2001-2016), or nurses (2001-2010). Immigrants were less likely to consult chiropractors or nurses. Persons aged >65 years were less likely to consult chiropractors or physiotherapists, and those with fair/poor general health were less likely to consult chiropractors, but more likely to consult other providers. Discussion and conclusion: Medical doctors were most commonly consulted by Canadians with back problems, then chiropractors and physiotherapists. Characteristics of healthcare utilization varied by provider. Findings inform the need to strengthen healthcare delivery for Canadians with back problems.

Characteristics and Healthcare Utilization of Canadians Living With Participation and Activity Limitations (2001-2010): A Population-Based Cross-Sectional Study.

INTRODUCTION: Individuals with participation and activity limitations face important healthcare challenges. OBJECTIVES: We investigated healthcare utilization and characteristics of Canadians living with participation and activity limitations between 2001 and 2010. METHODS: We pooled data from 5 cycles of the Canadian Community Health Survey (2001-2010 CCHS). The multistage stratified cluster-sampling method used covered approximately 98% of Canadians, aged 12 years and older residing in private dwellings. We described sociodemographic, behavioral, and health-related characteristics of participants with participation and activity limitations and reported their annual utilization (prevalence; 95% CI) of 7 healthcare providers. Multivariable modified Poisson regression identified individual characteristics associated with healthcare utilization and examined the trends over time. RESULTS: Annually, 8.1 million Canadians aged 12 years and older (29.8%) reported participation and activity limitations. Most common health conditions were back problems (37%) and arthritis (34%). Predominant healthcare providers were medical doctors (88.8%; 95% CI = 88.6-89.0), nurses (16.3%; 95% CI = 16.1-16.6), physiotherapists (15.0%; 95% CI = 14.7-15.2), and chiropractors (14.4%; 95% CI = 14.2-14.7). Overall, males, older adults, immigrants, those with lower education, lower income, recent employment, and better general health were less likely to consult providers. Over time, utilization of most non-medical providers increased. CONCLUSION: Participation and activity limitations are prevalent in Canada, and most consulted medical doctors. Disadvantaged groups reported lower utilization of most providers, emphasizing access challenges and the need for equitable and integrated healthcare policies. Improving access to rehabilitation services and their inclusion within universal healthcare coverage should be a priority.

Pre-rehabilitation scores of functioning measured using the World Health Organization Disability Assessment Schedule in persons with nonspecific low back pain: a scoping review.

Knowledge of the pre-rehabilitation generic status of functioning in individuals with low back pain is necessary to understand the clinical utility of rehabilitation care. We conducted a scoping review to describe the pre-rehabilitation functioning status of persons with nonspecific low back pain using the World Health Organization Disability Assessment Schedule (WHODAS)-36 or WHODAS-12. We searched multiple databases from 2010 to 2021 for studies reporting pre-rehabilitation scores using WHODAS in persons with low back pain. Reviewers independently screened articles and extracted data, and we descriptively summarized results by the duration of low back pain (acute/subacute <3 months; chronic ≥3 months), and the WHODAS version. Of 1770 citations screened, eight citations were relevant. Five studies were conducted in Europe, two in America, and one in the African Region (mostly high-income countries). In persons with acute low back pain, the mean WHODAS-36 pre-rehabilitation summary score (complex scoring) was 22.8/100 (SD = 15.4) (one study). In persons with chronic low back pain, the mean WHODAS-36 summary score (complex scoring) ranged from 22.8/100 (SD = 5.7) to 41.5/100 (SD = 13.8) (two studies). For WHODAS-12 in persons with chronic low back pain, the mean summary score was 11.4/48 (SD = 8.7) or 14.4/48 (SD = 9.4) using simple scoring (two studies), and 25.8/100 (SD = 2.2) using complex scoring (one study). No floor or ceiling effects were observed in WHODAS-36 summary scores for chronic low back pain. Our scoping review comprehensively summarizes available studies reporting pre-rehabilitation levels of functioning using WHODAS in persons with low back pain. Persons with low back pain seeking rehabilitation have moderate limitations in functioning, and limitations level tends to be worse with chronic low back pain.

When boundaries blur - exploring healthcare providers' views of chiropractic interprofessional care and the Canadian Forces Health Services.

INTRODUCTION: Musculoskeletal (MSK) conditions are primary reasons prohibiting Canadian Armed Forces (CAF) personnel from being deployed, with back pain the second most common activity-limiting condition. CAF provides a spectrum of services, including chiropractic care. There is a paucity of data related to chiropractic interprofessional care (IPC) within CAF healthcare settings. METHODS: A qualitative study, using an Interpretative Phenomenological Analysis (IPA) approach, involving 25 key informant interviews explored factors that impact chiropractic IPC. We used a systematic but not prescriptive process, based on a thematic analysis, to interconnect data to develop meaning and explanation. Initially, we explained and interpreted participant's experiences and meanings. Next, we used extant literature and theory, together with expert knowledge, to explain and interpret the meanings of participants' shared accounts. RESULTS: We present findings central to the domain, Role Clarity, as described in the IPC Competency Framework. Our findings call for strengthening IPC specific to MSK conditions in the CAF, including an examination of gatekeeping roles, responsibilities and outcomes. CONCLUSION: It is timely to investigate models of care that nurture and sustain inter-provider relationships in planning and coordinating evidence-based chiropractic care for MSK conditions, within the CAF, and its extended referral networks.

INTRODUCTION: Dans les Forces armées canadiennes (FAC), les troubles nusculosquelettiques sont les principaux obstacles au déploiement et les lombalgies constituent la deuxième maladie limitant les activités. Les FAC offre un vaste éventail de soins de santé dont les soins chiropratiques. Il existe peu de données sur les soins interprofessionnels chiropratiques (SIC) dispensés dans les établissements de soins de santé des FAC. MÉTHODOLOGIE: On a mené une étude qualitative par analyse interprétative phénoménologique (AIP), auprès de 25 informateurs importants pour connaître les facteurs qui influent sur les SIC. On a procédé par méthode systématique, et non une méthode prescriptive fondée sur une analyse thématique, pour relier les données entre elles et les interpréter. On a commencé par expliquer et interpréter les significations et les expériences des participants. Puis, à l'aide de la littérature et de la théorie actuelles et des connaissances approfondies, on a expliqué les significations des histoires racontées par les participants. RÉSULTATS: On présente les résultats pour ce qui est de l'aspect Role Clarity (clarté des rôles) décrit dans le cadre des compétences des SIC. D'après nos résultats, un renforcement des SIC spécifiquement pour la prise en charge des troubles musculosquelettiques s'impose au sein des FAC, de même qu'un examen de la surveillance, des responsabilités et des résultats. CONCLUSION: Il serait opportun de rechercher des modèles de soins permettant d'entretenir et de maintenir les relations entre les fournisseurs de soins de santé pour ce qui est de la préparation et de la coordination des soins chiropratiques fondés sur des données probantes servant à traiter des troubles musculosquelettiques dans les FAC, et aussi dans leurs réseaux d'aiguillage étendus.

The association between chiropractors' view of practice and patient encounter-level characteristics in Ontario, Canada: a cross-sectional study.

BACKGROUND: Chiropractors have diverse views of practice, but the impact on their patient profiles and treatment approaches remains unclear. We assessed the association between chiropractors' view of practice (unorthodox versus orthodox) and patient encounter-level characteristics among chiropractors who practice in Ontario, Canada. METHODS: We conducted a cross-sectional study using Ontario Chiropractic Observation and Analysis STudy (O-COAST) data. In O-COAST, Ontario chiropractors were randomly recruited from a list of registered chiropractors in 2015 and recorded up to 100 consecutive patient encounters. We classified chiropractors' response regarding their views of practice as unorthodox when viewing "vertebral subluxation as an encumbrance to health that is corrected to benefit overall well-being"; other views were considered orthodox. Patient encounter-level characteristics included: (1) non-musculoskeletal reason-for-encounter; (2) subluxation as diagnosis; (3) duration of encounter (log-transformed for modeling); (4) unimodal manipulative treatment; and (5) patient health characteristics (good health status, some activity limitations). We conducted multilevel logistic regression to assess the association between view of practice and aforementioned characteristics, accounting for potential confounders and clustering of encounters within chiropractors. The multilevel models had two levels (level 1-patient encounter level; level 2-chiropractor level), with level 1 patient encounters nested within level 2 chiropractors. RESULTS: We included 40 chiropractors (mean age = 43.4 years, SD = 11.5) and 3,378 chiropractor-patient encounters. The 2,332 unique patients identified had a mean age of 48.5 years (SD = 18.5). Chiropractors with unorthodox views had higher odds of having patients with a non-musculoskeletal reason-for-encounter (adjusted odds ratio (aOR) 16.5, 95% CI 3.2-84.0) and subluxation as diagnosis (aOR 63.0, 95% CI 4.2-949.1). Encounters of chiropractors with unorthodox views were 0.6 times shorter than those with orthodox views (95% CI 0.4-0.9). Chiropractor level explained 32%, 75%, and 49% of the variability in non-musculoskeletal reason-for-encounter, subluxation as diagnosis, and encounter duration, respectively. We observed no association between unorthodox view and unimodal manipulative treatment or patient health characteristics. CONCLUSIONS: Chiropractors' unorthodox view of practice was associated with treating non-musculoskeletal conditions, subluxation as diagnosis, and shorter duration of encounter. Chiropractor level explained a high proportion of variability in these outcomes. Findings have implications for understanding chiropractic practice and informing interprofessional collaboration.

Health-related quality of life and balance confidence among participants in a senior community-based exercise (SWIFT) program compared to age matched controls: a cross-sectional study.

BACKGROUND: Staying Well, Independent and Fit Together (SWIFT), a seniors' exercise program, aims to promote health, strength, mobility and community engagement. We compared quality of life and balance confidence in SWIFT participants and non-participants, aged 60 years and older. METHODS: Cross-sectional study comparing participants and non-participants in SWIFT program using Older People's Quality of Life Questionnaire (OPQOL) and Activities-specific Balance Confidence Scale (ABCS). RESULTS: Seventy participants completed surveys, 41 in experimental and 29 in control group. We found a statistically significant between group difference favoring the control group in overall OPQOL score but not in OPQOL subscale nor overall ABCS scores. Participants in both groups participating in weekly exercises had non-significantly higher quality of life subscale scores. CONCLUSION: Results suggest seniors in both study groups who participate in exercise have non-significantly higher quality of life scores compared to those who do not participate in exercise. Participation in the SWIFT exercise program or activity in general, contributes to quality of life in seniors.

CONTEXTE: Staying Well, Independent and Fit Together (SWIFT) est un programme d'exercice physique pour personnes âgées visant à promouvoir la santé, la force, la mobilité et la participation aux activités de la collectivité. Nous avons comparé la qualité de vie et le degré de confiance de la personne dans son équilibre entre des sujets participant au programme SWIFT et des sujets n'y participant pas, tous ayant 60 ans et plus. MÉTHODOLOGIE: Étude transversale visant à comparer l'état de participants au programme SWIFT à celui de non-participants à l'aide de l'Older People's Quality of Life Questionnaire (OPQOL) et de l'échelle de mesure du degré de confiance de la personne dans son équilibre associé aux gestes de la vie quotidienne (échelle ABC-S). RÉSULTATS: Soixante-dix participants ont rempli les questionnaires, 41 dans le groupe expérimental et 29 dans le groupe témoin. On a observé une différence importante sur le plan statistique entre les groupes en faveur du groupe de contrôle pour ce qui est du score global au OPQOL, mais non pour le score de la souséchelle du OPQOL ni pour le score global de l'échelle ABC-S. Chez les sujets des deux groupes faisant les exercices hebdomadaires, on n'a pas observé de scores supérieurs significatifs de la sous-échelle de la qualité de vie. CONCLUSION: Les résultats semblent montrer que chez les sujets âgés des deux groupes suivant le programme d'exercices, les scores de qualité de vie ne sont pas plus élevés, d'une manière significative, que ceux des sujets ne suivant pas le programme. Le programme SWIFT, et de façon générale l'activité physique, contribue à la qualité de vie des personnes âgées.

The difference between integration and collaboration in patient care: results from key informant interviews working in multiprofessional health care teams.

OBJECTIVES: Despite the growing interest in integrative health care, collaborative care, and interdisciplinary health care teams, there appears to be little consistency in terminology and clarity regarding the goal for these teams, other than "working together" for the good of the patients. The purpose of this study was to explore what the terms integration and collaboration mean for practitioners and other key informants working in multiprofessional health care teams, with a specific look at chiropractic and family physician teams in primary care settings. METHODS: Semistructured interviews were conducted with 16 key informants until saturation was obtained in the key emerging themes. All interviews were audiorecorded, and the transcripts were coded using qualitative content analysis. RESULTS: Most participants differentiated collaboration from integration. They generally described a model of professions working closely together (ie, collaborating) in the delivery of care but not subsumed into a single organizational framework (ie, integration). Our results suggest that integration requires collaboration as a precondition but collaboration does not require integration. CONCLUSIONS: Collaboration and integration should not be used interchangeably. A critical starting point for any new interdisciplinary team is to articulate the goals of the model of care.

Exploring Chiropractic Services in the Canadian Forces Health Services - Perceptions of Facilitators and Barriers Among Key Informants.

INTRODUCTION: Musculoskeletal (MSK) conditions have a significant impact on the health and operational readiness of military members. The Canadian Forces Health Services (CFHS) provides a spectrum of health services in managing Canadian Armed Forces (CAF) personnel health care needs with on-base and off-base services provided by civilian and uniformed health care professionals, including chiropractors. Although chiropractic services are available in US DoD and VA systems, little is known about the facilitators and barriers to integrating on-base chiropractic services within the CFHS. This study explored key informants' perceptions of facilitators and barriers to the integration of on-base chiropractic services within the CFHS. METHODS: We conducted a qualitative study to describe and understand how an integrated chiropractic service could be designed, implemented, and evaluated within the current interdisciplinary CFHS. Telephone interviews were conducted, using a semi-structured interview guide, to explore key informants' perceptions and experiences of chiropractic care within the CFHS. In total, we invited 27 individuals across Canada to participate; 15 were identified through purposeful sampling, 12 through a snowball sampling technique, and 2 declined. The 25 participants included military personnel (52%), public servants and contractors employed by the Department of Defense (24%), as well as civilian health care providers (24%). All participants were health care providers [physicians (MD) (7), physiotherapists (PT) (13), chiropractors (DC) (5)]. Interviews were audio-recorded and transcribed verbatim. Transcripts were prepared and analyzed using an interpretivist approach that explored key informants' perceptions and experiences. RESULTS: Qualitative analysis revealed numerous facilitators and barriers to chiropractic services in the CFHS. These were categorized under three broad themes: base-to-base variations, variable gatekeeper roles, and referral processes. Barriers to integrating chiropractic services included: lack of clarity about a chiropractor's clinical knowledge and skills; CFHS team members' negative prior experiences with chiropractors (e.g., inappropriate patient-focused communication, clinical management that was not evidence-based, ignorance of military culture); suboptimal bi-directional communication between CAF personnel and DCs across bases; and wide-ranging perspectives pertaining to duplication of services offered by PTs and DCs in managing MSK conditions. Facilitators associated with the integration of chiropractic services within a collaborative and interdisciplinary CAF environment included: patient benefits associated with multiple approaches utilized by different providers; adoption of up-to-date, high-quality evidence and guidelines to standardize care and curtail "dependency" between patient and providers; and co-location of providers to strengthen existing interprofessional communication and relationships. Key informants called for patient care that is collaborative, integrated and patient-centered, rather than "patient-driven" care; civilian providers understanding and respecting military culture rather than assuming transferability of patient management processes from the public civilian sector; standardization of communication protocols and measures to evaluate outcomes of care; and the need to move slowly and respectfully within the current CAF health care system if planning the on-base implementation of chiropractic services. CONCLUSION: This study illuminated many opportunities and barriers, in complex and diverse domains, related to introducing collaborative chiropractic services in the CFHS. The findings are relevant to increasing understanding and strengthening interprofessional collaborative care within the unique CAF health care delivery system.

The effects of spinal manipulation on performance-related outcomes in healthy asymptomatic adult population: a systematic review of best evidence.

Introduction: The effectiveness of spinal manipulative therapy (SMT) for improving athletic performance in healthy athletes is unclear. Assessing the effect of SMT on other performance outcomes in asymptomatic populations may provide insight into the management of athletes where direct evidence may not be available. Our objective was to systematically review the literature on the effect of SMT on performance-related outcomes in asymptomatic adults. Methods: MEDLINE, CINAHL, SPORTDiscus, and Cochrane Central Register of Controlled Trials were systematically searched from 1990 to March 23, 2018. Inclusion criteria was any study examining a performance-related outcome of SMT in asymptomatic adults. Methodological quality was assessed using the SIGN criteria. Studies with a low risk of bias were considered scientifically admissible for a best evidence synthesis. We calculated the between group mean change and 95% confidence intervals. Results: Of 1415 articles screened, 20 studies had low risk of bias, seven were randomized crossover trials, 10 were randomized controlled trials (RCT) and three were RCT pilot trials. Four studies showed SMT had no effect on physiological parameters at rest or during exercise. There was no effect of SMT on scapular kinematics or transversus abdominus thickness. Three studies identified changes in muscle activation of the upper or lower limb, compared to two that did not. Five studies showed changes in range of motion (ROM). One study showed an increase lumbar proprioception and two identified changes in baropodometric variables after SMT. Sport-specific studies show no effect of SMT except for a small increase in basketball free-throw accuracy. Conclusion: The preponderance of evidence suggests that SMT in comparison to sham or other interventions does not enhance performance-based outcomes in asymptomatic adult population. All studies are exploratory with immediate effects. In the few studies suggesting a positive immediate effect, the importance of such change is uncertain. Further high-quality performance specific studies are required to confirm these preliminary findings.

Implementation interventions for musculoskeletal programs of care in the active military and barriers, facilitators, and outcomes of implementation: a scoping review.

BACKGROUND: Musculoskeletal disorders are common in the active military and are associated with significant lost duty days and disability. Implementing programs of care to manage musculoskeletal disorders can be challenging in complex healthcare systems such as in the military. Understanding how programs of care for musculoskeletal disorders have been implemented in the military and how they impact outcomes may help to inform future implementation interventions in this population. METHODS: We conducted a scoping review using the modified Arksey and O'Malley framework to identify literature on (1) implementation interventions of musculoskeletal programs of care in the active military, (2) barriers and facilitators of implementation, and (3) implementation outcomes. We identified studies published in English by searching MEDLINE, CINAHL, Embase, and CENTRAL (Cochrane) from inception to 1 June 2018 and hand searched reference lists of relevant studies. We included empirical studies. We synthesized study results according to three taxonomies: the Effective Practice and Organization of Care (EPOC) taxonomy to classify the implementation interventions; the capability, opportunity, motivation-behavior (COM-B) system to classify barriers and facilitators of implementation; and Proctor et al.'s taxonomy (Adm Policy Ment Health 38:65-76, 2011) to classify outcomes in implementation research. RESULTS: We identified 1785 studies and 16 were relevant. All but two of the relevant studies were conducted in the USA. Implementation interventions were primarily associated with delivery arrangements (e.g., multidisciplinary care). Most barriers or facilitators of implementation were environmental (physical or social). Service and client outcomes indicated improved efficiency of clinical care and improved function and symptomology. Studies reporting implementation outcomes indicated the programs were acceptable, appropriate, feasible, or sustainable. CONCLUSION: Identification of evidence-based approaches for the management of musculoskeletal disorders is a priority for active-duty military. Our findings can be used by military health services to inform implementation strategies for musculoskeletal programs of care. Further research is needed to better understand (1) the components of implementation interventions, (2) how to overcome barriers to implementation, and (3) how to measure implementation outcomes to improve quality of care and recovery from musculoskeletal disorders.

Economic and resource status of the chiropractic profession in Ontario, Canada: a challenge or an opportunity.

OBJECTIVE: Chiropractic is one of the most frequently sought nonphysician provider groups. Despite its apparent recognition, the profession faces numerous challenges, including the economic reality of an increasing supply within a market of questionable demand. This paper evaluates the chiropractic manpower status in Ontario, Canada. METHODS: Data collected from administrative and education databases, insurance billing data, and population health survey data between 1990 and 2004 were analyzed. RESULTS: Between 1990 and 2004, the total number of chiropractic registrants in Ontario doubled, with an average annual rate of growth of about 5.4%; however, recent data suggest that the number of nonpracticing chiropractors is increasing, whereas the number of new registrants is decreasing. The rate of applications to a chiropractic institution rose sharply and peaked in 1996-1997, thereafter declining but leveling off in 2002-2003. Despite the continued growth in the number of practicing chiropractors, the utilization of chiropractic services among the Ontario population has remained relatively stable, resulting in a decline in the average net annual incomes adjusted for inflation to 2002 dollars. CONCLUSIONS: Our results support previous reports projecting an oversupply of chiropractors and suggest that the chiropractic profession in Ontario is in long-run oversupply. Competition from other providers, changing population demographics, and the recent loss of public funding for services may present significant future challenges to current practitioners. Opportunities related to participation in multidisciplinary environments and accessing unmet population health needs may contribute to influencing the demand for chiropractic services. A concerted effort by professional and educational institutions is required.

Personal and practice predictors associated with the income of Ontario chiropractors.

OBJECTIVE: Practice-based information may allow policy makers and associations the opportunity to interpret utilization rates and anticipate the impact of future growth of professions. The objective of this study was to assess the association between income and specific personal, practice, and treatment characteristics in a sample of Ontario chiropractors. METHODS: Descriptive and regression analyses were used to assess end-of-year practice summary data obtained from a professional billing software program voluntarily submitted by 731 individual chiropractors. RESULTS: The model explained 65% of the variance in income. Significant explanatory factors regarding income were those related to treatment characteristics, with the largest contribution made by the total number of new patients seen in the year, which uniquely contributed 17% of the total variance. Personal and practice-related characteristics made significant but relatively small contributions; however, the location of the practice and years since graduation appear to impact income, especially in the formative years of practice development. CONCLUSION: The variance in annual practitioner income was predicted by a combination of personal, practice, and treatment characteristics but not surprisingly primarily by the total number of new patients seen in the year. A negative association between average treatment costs and number of patients seen suggests cost sensitivity. The results provide important benchmarks that can be used to guide expectations of new graduates and to assess future trends. Further work is needed to determine if the findings can be generalized.

Chiropractic and public health: current state and future vision.

This article provides an overview of primary chiropractic issues as they relate to public health. This collaborative summary documents the chiropractic profession's current involvement in public health, reflects on past barriers that may have prevented full participation within the public health movement, and summarizes the relationship of current chiropractic and public health topics. Topics discussed include how the chiropractic profession participates in preventive health services, health promotion, immunization, geriatrics, health care in a military environment, and interdisciplinary care.

The chiropractic profession: a scoping review of utilization rates, reasons for seeking care, patient profiles, and care provided.

Background: Previous research has investigated utilization rates, who sees chiropractors, for what reasons, and the type of care that chiropractors provide. However, these studies have not been comprehensively synthesized. We aimed to give a global overview by summarizing the current literature on the utilization of chiropractic services, reasons for seeking care, patient profiles, and assessment and treatment provided. Methods: Systematic searches were conducted in MEDLINE, CINAHL, and Index to Chiropractic Literature using keywords and subject headings (MeSH or ChiroSH terms) from database inception to January 2016. Eligible studies: 1) were published in English or French; 2) were case series, descriptive, cross-sectional, or cohort studies; 3) described patients receiving chiropractic services; and 4) reported on the following theme(s): utilization rates of chiropractic services; reasons for attending chiropractic care; profiles of chiropractic patients; or, types of chiropractic services provided. Paired reviewers independently screened all citations and data were extracted from eligible studies. We provided descriptive numerical analysis, e.g. identifying the median rate and interquartile range (e.g., chiropractic utilization rate) stratified by study population or condition. Results: The literature search retrieved 14,149 articles; 328 studies (reported in 337 articles) were relevant and reported on chiropractic utilization (245 studies), reason for attending chiropractic care (85 studies), patient demographics (130 studies), and assessment and treatment provided (34 studies). Globally, the median 12-month utilization of chiropractic services was 9.1% (interquartile range (IQR): 6.7%-13.1%) and remained stable between 1980 and 2015. Most patients consulting chiropractors were female (57.0%, IQR: 53.2%-60.0%) with a median age of 43.4 years (IQR: 39.6-48.0), and were employed (median: 77.3%, IQR: 70.3%-85.0%). The most common reported reasons for people attending chiropractic care were (median) low back pain (49.7%, IQR: 43.0%-60.2%), neck pain (22.5%, IQR: 16.3%-24.5%), and extremity problems (10.0%, IQR: 4.3%-22.0%). The most common treatment provided by chiropractors included (median) spinal manipulation (79.3%, IQR: 55.4%-91.3%), soft-tissue therapy (35.1%, IQR: 16.5%-52.0%), and formal patient education (31.3%, IQR: 22.6%-65.0%). Conclusions: This comprehensive overview on the world-wide state of the chiropractic profession documented trends in the literature over the last four decades. The findings support the diverse nature of chiropractic practice, although common trends emerged.