Industry Payments for Vibegron and Prescribing Patterns Among Urologic Clinicians.

This cross-sectional study compares the prescribing practices among urologists and advanced practice clinicians who received vs did not receive payment from drug manufacturers.

Industry Payments to Urologists and Urologic Advanced Practice Providers in 2021.

OBJECTIVE: To compare industry payments from drug and medical device companies to urologists and urologic advanced practice providers (APPs) in 2021. METHODS: We used the 2020 Medicare Data on Provider Practice and Specialty file to identify single-specialty urology practices, defined as those where the majority of physicians were urologists. We then used the Open Payments Program Year 2021 data to summarize the value and number of industry payments to urologists and APPs, including nurse practitioners and physician assistants, in these practices. We calculated the total value and number of payments and median total value and number of payments per provider for urologists and urologic APPs. RESULTS: We identified 4418 urologists and 1099 APPs working in single-specialty urology practices in 2021 (Table 1). Of these, 3646 (87%) urologists received at least one industry payment, totaling $14,755,003 from 116,039 payments, and 954 urologic APPs (87%) received at least one industry payment, including 463 nurse practitioners (85%), totaling $401,283 from 13,035 payments, and 491 physician assistants (89%), totaling $543,429 from 14,626 payments. We observed significantly greater median total value and number of payments per provider for urologists ($620 and 24 payments) compared to urologic APPs ($473 and 21 payments; P < .001 and P = .017, respectively). CONCLUSION: A similar percentage of urologists and urologic APPs received industry payments in 2021. While urologists received a higher total number and total value of payments in 2021, urologic APPs were a common target of industry marketing payments.

Community-Led, Cross-Sector Partnership of Housing and Health Care to Promote Aging in Place (Unite Health Project): Protocol for a Prospective Observational Study.

BACKGROUND: For many older Americans, aging in place is their preferred living arrangement. Minoritized and socioeconomically disadvantaged older adults are up to 3 times more likely to experience disability than other groups, which increases their likelihood of being unable to age in place. Bold ideas to facilitate aging in place, particularly among vulnerable populations, are needed. One such idea is the Unite care model, a community-initiated, academic-supported, cross-sector initiative that combines 2 sectors: housing and health care. The Unite care model colocates a federally qualified health center clinic on an older adult affordable housing campus in Flint, Michigan. OBJECTIVE: There are two aims to this study. Aim 1 is to evaluate the implementation of the Unite care model in terms of acceptability, adoption, and penetration. Aim 2 is to determine which older adults use the care model and whether the care model promotes aging in place through risk factor reduction and improvement in the physical and social environment. METHODS: We will assess the care model using a concurrent, exploratory mixed methods design. For aim 1, acceptability will be assessed through semistructured interviews with key stakeholder groups; adoption and penetration will be assessed using housing and health care records. For aim 2, residents residing in the Unite clinic building will participate in structured outcome assessments at 6 and 12 months. Risk factor reduction will be measured by change in systolic blood pressure from baseline to 12 months and change in the physical and social environment (item counts) will also be assessed from baseline to 12 months. RESULTS: Data collection for aim 1 began in July 2021 and is anticipated to end in April 2023. Data collection for aim 2 began in June 2021 and concluded in November 2022. Data analysis for aim 1 is anticipated to begin in the summer of 2023 and analysis for aim 2 will begin in the spring of 2023. CONCLUSIONS: If successful, the Unite care model could serve as a new care model to promote aging in place among older adults living in poverty and older Black Americans. The results of this proposal will inform whether larger scale testing of this new model of care is warranted. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/47855.

Nationwide Implementation of a Population Management Dashboard for Monitoring Direct Oral Anticoagulants: Insights From the Veterans Affairs Health System.

BACKGROUND: Direct oral anticoagulants are first-line therapy for common thrombotic conditions, including atrial fibrillation and venous thromboembolism. Despite their strong efficacy and safety profile, evidence-based prescribing can be challenging given differences in dosing based on indication, renal function, and drug-drug interactions. The Veterans Health Affairs developed and implemented a population management dashboard to support pharmacist review of anticoagulant prescribing. The dashboard includes information about direct oral anticoagulants and dose prescribed, renal function, age, and weight, potential interacting medications, and the need for direct oral anticoagulant medication refills. It is a stand-alone system. METHODS: Using login data from the dashboard, nationwide implementation was evaluated using elements from the Reach, Effectiveness, Adoption, Implementation, and Maintenance framework. RESULTS: Between August 2016 and June 2020, 150/164 sites within the Veterans Health Affairs system used the dashboard, averaging 1875 patients per site. The dashboard was made available to sites on a staggered basis. Moderate or high adoption, defined as at least one login on at least 2 separate days per month, began slowly with 3/5 sites in the pilot phase but rapidly grew to 142/150 (94.7%) sites by June 2020. The average number of unique users per site increased from 2.4 to 7.5 over the study period. Moderate to high adoption of the dashboard's use was maintained for > 6 months in 126/150 (84.0%) sites by the end of the study period. CONCLUSIONS: There was rapid and sustained implementation and adoption of a population health dashboard for evidence-based anticoagulant prescribing across the national United States Veterans Health Administration health system. The impact of this tool on clinical outcomes and strategies to replicate this care model in other health systems will be important for broad dissemination and uptake.

Mapping the organizational readiness to change assessment to the Consolidated Framework for Implementation Research.

BACKGROUND: Implementation researchers recognize the influential role of organizational factors and, thus, seek to assess these factors using quantitative measurement instruments. However, researchers are hindered by instruments that measure similar constructs but rely on different nomenclature and/or definitions. The Consolidated Framework for Implementation Research (CFIR) provides a taxonomy of constructs derived from prior frameworks and empirical studies of implementation-related constructs. The CFIR includes constructs based on the original Promoting Action on Research Implementation in Health Services (PARiHS) framework which highlights the key roles of strength of evidence for a specific evidence-based intervention (EBI), favorability of organizational context for change, and capacities to facilitate implementation of the EBI. Although the CFIR is among the most frequently used implementation frameworks, it does not include quantitative measures. The Organizational Resource and Context Assessment (ORCA) is a quantitative measurement instrument that was developed based on PARiHS, assessing its three domains. Factors within these three domains are conceptually similar to constructs in the CFIR but do not match directly. The aim of this work was to map ORCA survey items to CFIR constructs to enable direct comparisons and syntheses of findings across studies using the CFIR and/or ORCA. METHODS: Two distinct, independent research teams, each used rigorous constant comparative techniques with deliberation and consensus to map individual items from the ORCA to the five domains and 39 constructs of CFIR. RESULTS: ORCA items were mapped primarily to three of five CFIR domains: Inner Setting, Process, and Intervention Characteristics. The two research teams agreed on 88% of mappings at the higher domain level; at the lower construct level, their mappings aligned for 62.2% of the ORCA items. CONCLUSIONS: Mapping results reveal that the ORCA focuses measurement prominently on Inner Setting, Process, and Intervention Characteristics. This mapping guide can help improve consistency in measurement and reporting, enabling more efficient comparison and synthesis of findings that use either the ORCA instrument or the CFIR framework. The guide helps advance implementation science utilizing mixed methods by providing CFIR users with quantitative measures for selected constructs and enables ORCA users to map their findings to CFIR constructs.

Building the Next Generation of Researchers: Mentored Training in Dissemination and Implementation Science.

PROBLEM: Dissemination and implementation (D&I) science provides the tools needed to close the gap between known intervention strategies and their effective application. The authors report on the Mentored Training for Dissemination and Implementation Research in Cancer (MT-DIRC) program-a D&I training program for postdoctoral or early-career cancer prevention and control scholars. APPROACH: MT-DIRC was a 2-year training institute in which fellows attended 2 annual Summer Institutes and other conferences and received didactic, group, and individual instruction; individualized mentoring; and other supports (e.g., pilot funding). A quasi-experimental design compared changes in 3 areas: mentoring, skills, and network composition. To evaluate mentoring and D&I skills, data from fellows on their mentors' mentoring competencies, their perspectives on the importance of and satisfaction with mentoring priority areas, and their self-rated skills in D&I competency domains were collected. Network composition data were collected from faculty and fellows for 3 core social network domains: contact, mentoring, and collaboration. Paired t tests (mentoring), linear mixed models (skills), and descriptive analyses (network composition) were performed. OUTCOMES: Mentors were rated as highly competent across all mentoring competencies, and each mentoring priority area showed reductions in gaps between satisfaction and importance between the 6 and 18 months post-first Summer Institute. Fellows' self-rated skills in D&I competencies improved significantly in all domains over time (range: 42.5%-52.9% increase from baseline to 18 months post-first Summer Institute). Mentorship and collaboration networks grew over time, with the highest number of collaboration network ties for scholarly manuscripts (n = 199) in 2018 and for research projects (n = 160) in 2019. NEXT STEPS: Building on study findings and existing literature, mentored training of scholars is an important approach for building D&I skills and networks, and thus to better applying the vast amount of available intervention evidence to benefit cancer control.

Use of an audit with feedback implementation strategy to promote medication error reporting by nurses.

AIMS AND OBJECTIVES: To outline the development and effect of an audit with feedback implementation strategy that intended to increase the rate of voluntary medication error reporting by nurses. BACKGROUND: Medication errors are a serious global health issue. Audit with feedback is a widely used implementation strategy that has potential to modify nurses' reporting behaviour and improve medication error reporting rates. DESIGN: Quasi-experimental implementation study (fulfilling the TIDieR checklist) with two pairs of matched wards at a private hospital in Australia was conducted from March 2015-September 2016. One ward from each pair was randomised to either the intervention or control group. METHOD: Nurses within intervention wards received audit with feedback on a quarterly basis over a 12-month implementation period. Control wards underwent quarterly audits only (without feedback). Feedback consisted of a one-page infographic poster, with content based on medication error data obtained from audits and the hospitals' risk management system (RiskMan). The primary outcome-rate of medication errors reported per month-was determined in both groups at pre-implementation, implementation and postimplementation phases. Differences between groups were compared using generalised linear mixed models with Poisson distribution and log link. RESULTS: A nonsignificant intervention effect was found for rate of medication errors reported per month. Interestingly, when combining data from both groups, a significant increasing time trend was observed for medication errors reported per month across pre-implementation and implementation phases (80% increase). CONCLUSIONS: The audit with feedback strategy developed in the present study did not effectively influence the voluntary reporting of medication errors by nurses. RELEVANCE TO CLINICAL PRACTICE: Despite the lack of intervention effects, the use of a published checklist to optimise the reporting quality of this study will contribute to the field by furthering the understanding of how to enhance audit with feedback implementation strategies for nurses.

Implementation science in times of Covid-19.

The emergence of SARS-CoV-2/Covid-19 affects all of us and is associated with rapid and massive changes in healthcare and societies. As a response, a range of interventions for patients and populations have been implemented in health and preventive settings, or need to be implemented in the short and long term. Implementation science offers a multidisciplinary perspective and systematic approach for the design, evaluation and analysis of programmes and policies to enhance implementation. The emergence of Covid-19 provides an urgent need to develop new perspectives and approaches in implementation science, such as the addition of innovative and rigorous approaches to the collection, use and analysis of 'real-world' data. Above all, we hope that implementation scientists will focus on what they can contribute to manage Covid-19 and its consequences for people, healthcare and society.

Organizational readiness assessment in acute and long-term care has important implications for antibiotic stewardship for asymptomatic bacteriuria.

BACKGROUND: Prior to implementing an antibiotic stewardship intervention for asymptomatic bacteriuria (ASB), we assessed institutional barriers to change using the Organizational Readiness to Change Assessment. METHODS: Surveys were self-administered on paper in inpatient medicine and long-term care units at 4 Veterans Affairs facilities. Participants included providers, nurses, and pharmacists. The survey included 7 subscales: evidence (perceived strength of evidence) and six context subscales (favorability of organizational context). Responses were scored on a 5-point Likert-type scale. RESULTS: One hundred four surveys were completed (response rate = 69.3%). Overall, the evidence subscale had the highest score; the resources subscale (mean 2.8) was significantly lower than other subscales (P < .001). Scores for budget and staffing resources were lower than scores for training and facility resources (P < .001 for both). Pharmacists had lower scores than providers for the staff culture subscale (P = .04). The site with the lowest scores for resources (mean 2.4) also had lower scores for leadership and lower pharmacist effort devoted to stewardship. CONCLUSIONS: Although healthcare professionals endorsed the evidence about nontreatment of ASB, perceived barriers to antibiotic stewardship included inadequate resources and leadership support. These findings provide targets for tailoring the stewardship intervention to maximize success.

Assessment of a Best Practice Alert and Referral Process for Preprocedure Antithrombotic Medication Management for Patients Undergoing Gastrointestinal Endoscopic Procedures.

Importance: Management of antithrombotic medications presents a challenge for many clinicians and patients before procedures. Anticoagulation clinic involvement may improve preprocedure coordination, satisfaction on the part of patients and clinicians, last-minute procedure cancellations, and patient safety. Objective: To assess the implementation of an electronic medical record (EMR) best practice alert (BPA) and anticoagulation clinic referral process to assist with management of antithrombotic medication before gastrointestinal endoscopic procedures. Design, Setting, and Participants: This multimodal evaluation of a quality improvement intervention using EMRs and survey data included patients using oral antithrombotic medications who were scheduled for elective gastrointestinal endoscopic procedures at an academic medical center along with the clinicians who ordered these procedures. Data were collected from November 1, 2017, through December 19, 2018. Data were analyzed in September 2019. Exposures: Following a multidisciplinary intervention, a BPA and referral process for periprocedural antithrombotic medication management was implemented in November 2017. Main Outcomes and Measures: The following implementation outcomes were assessed through EMR review and surveys through December 2018: use of BPAs, patient and clinician satisfaction with preprocedure anticoagulation management, procedure cancelation rates, reach, and spread by patient and clinician characteristics. Multilevel logistic regression was used to estimate variance in BPA use at the clinician level. Results: A total of 2082 patients (mean [SD] age, 64.1 [11.9] years) and 144 clinicians were included in the analysis. The BPA was used broadly across the health system, resulting in anticoagulation clinic referral for 1389 patients (66.7%). Referral was more common for patients using anticoagulant vs antiplatelet medications (1041 of 1524 [68.3%] vs 346 of 556 [62.2%]; adjusted odds ratio [aOR], 1.51; 95% CI, 1.15-1.98) and for procedures ordered by gastroenterologists vs primary care clinicians (933 of 1241 [75.2%] vs 365 of 618 [59.1%]; aOR, 2.15; 95% CI, 1.46-3.17). Individual clinician behavior patterns explained 26.5% (95% CI, 18.7%-36.1%) of variation in anticoagulation clinic referrals. Implementation of the intervention was associated with high patient satisfaction and improvements in multidimensional measures of clinician satisfaction (clinician response rate, 44.2% [144 of 326]). In multivariable analysis, the odds of altered or canceled procedures because of medication mismanagement declined after implementation (8 of 50 [16.0%] vs 1 of 52 [1.9%]; aOR, 0.11; 95% CI, 0.01-0.96; P = .02). Conclusions and Relevance: A newly implemented BPA and anticoagulation clinic referral process was broadly adopted and used, had high satisfaction by patients and clinicians, and was associated with fewer disruptions to planned procedures caused by medication mismanagement.

Outcomes of primary care delivery by nurse practitioners: Utilization, cost, and quality of care.

OBJECTIVE: To examine whether nurse practitioner (NP)-assigned patients exhibited differences in utilization, costs, and clinical outcomes compared to medical doctor (MD)-assigned patients. DATA SOURCES: Veterans Affairs (VA) administrative data capturing characteristics, outcomes, and provider assignments of 806 434 VA patients assigned to an MD primary care provider (PCP) who left VA practice between 2010 and 2012. STUDY DESIGN: We applied a difference-in-difference approach comparing outcomes between patients reassigned to MD and NP PCPs, respectively. We examined measures of outpatient (primary care, specialty care, and mental health) and inpatient (total and ambulatory care sensitive hospitalizations) utilization, costs (outpatient, inpatient and total), and clinical outcomes (control of hemoglobin A1c, LDL, and blood pressure) in the year following reassignment. PRINCIPAL FINDINGS: Compared to MD-assigned patients, NP-assigned patients were less likely to use primary care and specialty care services and incurred fewer total and ambulatory care sensitive hospitalizations. Differences in costs, clinical outcomes, and receipt of diagnostic tests between groups were not statistically significant. CONCLUSIONS: Patients reassigned to NPs experienced similar outcomes and incurred less utilization at comparable cost relative to MD patients. NPs may offer a cost-effective approach to addressing anticipated shortages of primary care physicians.

Stroke Ready: a multi-level program that combines implementation science and community-based participatory research approaches to increase acute stroke treatment: protocol for a stepped wedge trial.

BACKGROUND: Post-stroke disability is common, costly, and projected to increase. Acute stroke treatments can substantially reduce post-stroke disability, but few patients take advantage of these cost-effective treatments. Practical, cost-efficient, and sustainable interventions to address underutilized acute stroke treatments are currently lacking. In this context, we present the Stroke Ready project, a stepped wedge design, multi-level intervention that combines implementation science and community-based participatory research approaches to increase acute stroke treatments in the predominately African American community of Flint, Michigan, USA. METHODS: Guided by the Tailored Implementation of Chronic Disease (TICD) framework, we begin with optimization of acute stroke care in emergency departments, with particular attention given to our safety-net hospital partners. Then, we move to a community-wide, multi-faceted, stroke preparedness intervention, with workshops led by peer educators, over 2 years. Measures of engagement of the safety-net hospital and the feasibility and sustainability of the implementation strategy as well as community intervention reach, dose delivered, and satisfaction will be collected. The primary outcome is acute stroke treatment rates, which includes both intravenous tissue plasminogen activator, and endovascular treatment. The co-secondary outcomes are intravenous tissue plasminogen activator treatment rates and the proportion of stroke patients who arrive by ambulance. DISCUSSION: If successful, Stroke Ready will increase acute stroke treatment rates through emergency department and community level interventions. The stepped wedge design and process evaluation will provide insight into how Stroke Ready works and where it might work best. By exploring the relative effectiveness of the emergency department optimization and the community intervention, we will inform hospitals and communities as they determine how best to use their resources to optimize acute stroke care. TRIAL REGISTRATION: ClinicalTrials.gov Trial Identifier NCT03645590 .

Scope, Themes, and Medical Accuracy of eHealth Peripheral Artery Disease Community Forums.

BACKGROUND: The availability of electronic health (eHealth) information and disease-related community forums has grown over the last decade. Although patients and families frequently use these resources, their content has not been characterized in terms users, content, or reliability of information. eHealth communities therefore represent a potentially valuable but uncharted source of information about key patient issues, communication terminology, and unmet needs. We hypothesized that eHealth forums would contain terminology, themes, and advice inconsistent with resources from medical providers and references. To test this hypothesis, we performed a qualitative analysis of posts and responses from an open-access peripheral artery disease (PAD) eHealth community forum to characterize the discussion, participants, and the information being exchanged. METHODS: Posts were collected from an online PAD Medical Support Community forum (MedHelp), which is open access, does not require participants to identify themselves, and is based in the United States. Posts were selected from threads in which the main topic was PAD, including diagnosis, symptoms, and treatment. Original posts and related responses were analyzed for thematic content, common vernacular, and self-reported characteristics of the participants using a qualitative analysis software program. Disease-specific comments and advice were evaluated for congruence with contemporary PAD treatment guidelines. RESULTS: A total of 103 posts were collected and analyzed, including 40 original posts and 63 responses. Forty-five percent of the original posts and 19% of the responses were authored by participants who self-identified as patients with PAD. The remaining posts were authored by people with undeclared relationships to patients with PAD, followed by children, spouses, and other relatives. The most common themes among original posts included PAD diagnosis (and differential) (25%), treatment (23%), epidemiology and pathophysiology (21%), disease symptoms and impacts on activities of daily living (15%), and health-care provider recommendations (13%). Themes of responses included medical advice (40.5%), personal experiences with PAD (32.8%), and social support (12.6%). Negative attitudes were identified in 10 of 18 (55.6%) posts related to experiences with health-care providers. Of all medical advice, 15.1% was inconsistent with clinical treatment guidelines. CONCLUSION: eHealth communities are a rich source of information related to the experiences of patients with PAD, their treatment preferences, questions they consider important, and terminology that they use. This information can be used to understand unmet patient needs, develop educational resources, and improve communication.

The implications of baseline bone-health assessment at initiation of androgen-deprivation therapy for prostate cancer.

OBJECTIVES: To assess bone-density testing (BDT) use amongst prostate cancer survivors receiving androgen-deprivation therapy (ADT), and downstream implications for osteoporosis and fracture diagnoses, as well as pharmacological osteoporosis treatment in a national integrated delivery system. PATIENTS AND METHODS: We identified 17 017 men with prostate cancer who received any ADT between 2005 and 2014 using the Veterans Health Administration cancer registry and administrative data. We identified claims for BDT within a 3-year period of ADT initiation. We then used multivariable regression to examine the association between BDT use and incident osteoporosis, fracture, and use of pharmacological treatment. RESULTS: We found that a minority of patients received BDT (n = 2 502, 15%); however, the rate of testing increased to >20% by the end of the study period. Men receiving BDT were older at diagnosis and had higher-risk prostate cancer (both P < 0.001). Osteoporosis and fracture diagnoses, use of vitamin D ± calcium, and bisphosphonates were all more common in men who received BDT. After adjustment, BDT, and to a lesser degree ≥2 years of ADT, were both independently associated with incident osteoporosis, fracture, and osteoporosis treatment. CONCLUSIONS: BDT is rare amongst patients with prostate cancer treated with ADT in this integrated delivery system. However, BDT was associated with substantially increased treatment of osteoporosis indicating an underappreciated burden of osteoporosis amongst prostate cancer survivors initiating ADT. Optimising BDT use and osteoporosis management in this at-risk population appears warranted.

Implementation science: a reappraisal of our journal mission and scope.

The implementation of research findings into healthcare practice has become increasingly recognised as a major priority for researchers, service providers, research funders and policymakers over the past decade. Nine years after its establishment, Implementation Science, an international online open access journal, currently publishes over 150 articles each year. This is fewer than 30% of those submitted for publication. The majority of manuscript rejections occur at the point of initial editorial screening, frequently because we judge them to fall outside of journal scope. There are a number of common reasons as to why manuscripts are rejected on grounds of scope. Furthermore, as the field of implementation research has evolved and our journal submissions have risen, we have, out of necessity, had to become more selective in what we publish. We have also expanded our scope, particularly around patient-mediated and population health interventions, and will monitor the impact of such changes. We hope this editorial on our evolving priorities and common reasons for rejection without peer review will help authors to better judge the relevance of their papers to Implementation Science.

Implementation of an audit with feedback knowledge translation intervention to promote medication error reporting in health care: a protocol.

BACKGROUND: Health professionals strive to deliver high-quality care in an inherently complex and error-prone environment. Underreporting of medical errors challenges attempts to understand causative factors and impedes efforts to implement preventive strategies. Audit with feedback is a knowledge translation strategy that has potential to modify health professionals' medical error reporting behaviour. However, evidence regarding which aspects of this complex, multi-dimensional intervention work best is lacking. The aims of the Safe Medication Audit Reporting Translation (SMART) study are to: 1. Implement and refine a reporting mechanism to feed audit data on medication errors back to nurses 2. Test the feedback reporting mechanism to determine its utility and effect 3. Identify characteristics of organisational context associated with error reporting in response to feedback METHODS/DESIGN: A quasi-experimental design, incorporating two pairs of matched wards at an acute care hospital, is used. Randomisation occurs at the ward level; one ward from each pair is randomised to receive the intervention. A key stakeholder reference group informs the design and delivery of the feedback intervention. Nurses on the intervention wards receive the feedback intervention (feedback of analysed audit data) on a quarterly basis for 12 months. Data for the feedback intervention come from medication documentation point-prevalence audits and weekly reports on routinely collected medication error data. Weekly reports on these data are obtained for the control wards. A controlled interrupted time series analysis is used to evaluate the effect of the feedback intervention. Self-report data are also collected from nurses on all four wards at baseline and at completion of the intervention to elicit their perceptions of the work context. Additionally, following each feedback cycle, nurses on the intervention wards are invited to complete a survey to evaluate the feedback and to establish their intentions to change their reporting behaviour. To assess sustainability of the intervention, at 6 months following completion of the intervention a point-prevalence chart audit is undertaken and a report of routinely collected medication errors for the previous 6 months is obtained. This intervention will have wider application for delivery of feedback to promote behaviour change for other areas of preventable error and adverse events.

Practice patterns in spine radiograph utilization among doctors of chiropractic enrolled in a provider network offering complementary care in the United States.

OBJECTIVE: Nonspecific back pain is associated with high use of diagnostic imaging in primary care, yet current evidence suggests that routine imaging of the spine is unnecessary. The objective of this study is to describe current practice patterns in spine radiograph utilization among doctors of chiropractic enrolled in an American provider network. METHODS: A cross-sectional analysis of administrative claims data from one of the largest providers of complementary health care networks for health plans in the United States was performed. Survey data containing provider demographics were linked with routinely collected data on spine radiograph utilization and patient characteristics aggregated at the provider level. We calculated rates and variations of spine radiographs over 12 months. Negative binomial regression was performed to identify significant predictors of high radiograph utilization and to estimate the associated incidence risk ratio. RESULTS: Complete data for 6946 doctors of chiropractic and 249193 adult patients were available for analyses. In 2010, claims were paid for a total of 91542 new patient examinations and 23369 spine radiographs (including 17511 ordered within 5 days of initial patient examination). The rate of spine radiographs within 5 days of an initial patient visit was 204 per 1000 new patient examinations. Significant predictors of higher radiograph utilization rates included the following: practicing in the Midwest or South US census regions, practicing in an urban or suburban setting, chiropractic school attended, and being a male provider in full-time practice with more than 20 years of experience. CONCLUSION: Chiropractic school attended and practice location were the most influential predictors of spine radiograph utilization among network chiropractors. This information may help to inform the development and evaluation of a tailored intervention to address overuse of radiograph utilization.