Clinical and Translational Science Collaborative of Northern Ohio

Research often fails to find its way into practice or policy in a timely way, if at all. Given the current pressure and pace of health care change, many authors have recommended different approaches to make health care research more relevant and rapid. An emerging standard for research, the "5 R's" is a synthesis of recommendations for care delivery research that (1) is relevant to stakeholders; (2) is rapid and recursive in application; (3) redefines rigor; (4) reports on resources required; and (5) is replicable. Relevance flows from substantive ongoing participation by stakeholders. Rapidity and recursiveness occur through accelerated design and peer reviews followed by short learning/implementation cycles through which questions and answers evolve over time. Rigor is the disciplined conduct of shared learning within the specific changing situations in diverse settings. Resource reporting includes costs of interventions. Replicability involves designing for the factors that may affect subsequent implementation of an intervention or program in different contexts. These R's of the research process are mutually reinforcing and can be supported by training that fosters collaborative and reciprocal relationships among researchers, implementers, and other stakeholders. In sum, a standard is emerging for research that is both rigorous and relevant. Consistent and bold application will increase the value, timeliness, and applicability of the research enterprise.

OBJECTIVE: The most common sites of colorectal cancer (CRC) recurrence are the local tissues, liver or lungs. The objective was to identify risk factors associated with the primary CRC tumor and cancer recurrence in these anatomical sites. METHODS: Retrospective, longitudinal analyses of data on CRC survivors. Multivariable Cox regression analysis was performed to examine the association between possible cofounders with recurrence to various anatomical sites. RESULTS: Data for 10,398CRC survivors (tumor location right colon=3870, left colon=2898, high rectum=2569, low rectum=1061) were analyzed; follow up time was up to five years. Mean age at curative surgery was 71.5 (SD 11.8) years, 20.2% received radio-chemotherapy, stage T3 (64.4%) and N0 (65.1%) were most common. Overall 1632 (15.7%) had cancer recurrence (Isolated liver n=412, 3,8%; isolated lung n=252, 2,4%; isolated local n=223, 2.1%). Risk factors associated with recurrent CRC were identified, i.e. isolated liver metastases (male: Adjusted Hazard Ratio (AHR) 1,45; colon left: AHR 1,63; N2 disease: AHR 3,35; T2 disease: AHR 2,82), isolated lung metastases (colon left: AHR 1,53; rectum high: AHR 2,48; rectum low: AHR 2,65; N2 disease 3,76), and local recurrence (glands examined<12: AHR 1,51; CRM <3mm: AHR 1,60; rectum high: AHR 2,15; N2 disease: AHR 2,58) (all p values <0001). CONCLUSION: Our study finds that the site of the primary CRC tumor is associated with location of subsequent metastasis. Left sided colon cancers have increased risk of metastatic spread to the liver, whereas rectal cancers have increased risk of local recurrence and metastatic spread to the lungs. These results, in combination with other risk factors for CRC recurrence, should be taken into consideration when designing risk adapted post-treatment CRC surveillance programs.

BACKGROUND: Parasitic infections are prevalent among pregnant women in sub-Saharan Africa. We investigated whether prenatal exposure to malaria and/or helminths affects the pattern of infant immune responses to standard vaccinations against Haemophilus influenzae (Hib), diphtheria (DT), hepatitis B (Hep B) and tetanus toxoid (TT). METHODS AND FINDINGS: 450 Kenyan women were tested for malaria, schistosomiasis, lymphatic filariasis (LF), and intestinal helminths during pregnancy. After three standard vaccinations at 6, 10 and 14 weeks, their newborns were followed biannually to age 36 months and tested for absolute levels of IgG against Hib, DT, Hep B, and TT at each time point. Newborns' cord blood (CB) lymphocyte responses to malaria blood-stage antigens, soluble Schistosoma haematobium worm antigen (SWAP), and filaria antigen (BMA) were also assessed. Three immunophenotype categories were compared: i) tolerant (those having Plasmodium-, Schistosoma-, or Wuchereria-infected mothers but lacking respective Th1/Th2-type recall responses at birth to malaria antigens, SWAP, or BMA); ii) sensitized (those with infected/uninfected mothers and detectable Th1/Th2-type CB recall response to respective parasite antigen); or iii) unexposed (no evidence of maternal infection or CB recall response). Overall, 78.9% of mothers were infected with LF (44.7%), schistosomiasis (32.4%), malaria (27.6%) or hookworm (33.8%). Antenatal maternal malaria, LF, and hookworm were independently associated with significantly lower Hib-specific IgG. Presence of multiple maternal infections was associated with lower infant IgG levels against Hib and DT antigens post-vaccination. Post-vaccination IgG levels were also significantly associated with immunophenotype: malaria-tolerized infants had reduced response to DT, whereas filaria-tolerized infants showed reduced response to Hib. CONCLUSIONS: There is an impaired ability to develop IgG antibody responses to key protective antigens of Hib and diphtheria in infants of mothers infected with malaria and/or helminths during pregnancy. These findings highlight the importance of control and prevention of parasitic infections among pregnant women.

PURPOSE: To provide empirical evidence on key organizing constructs shaping practical, real-world integration of behavior health and primary care to comprehensively address patients' medical, emotional, and behavioral health needs. METHODS: In a comparative case study using an immersion-crystallization approach, a multidisciplinary team analyzed data from observations of practice operations, interviews, and surveys of practice members, and implementation diaries. Practices were drawn from 2 studies of practices attempting to integrate behavioral health and primary care: Advancing Care Together, a demonstration project of 11 practices located in Colorado, and the Integration Workforce Study, a study of 8 practices across the United States. RESULTS: We identified 5 key organizing constructs influencing integration of primary care and behavioral health: 1) Integration REACH (the extent to which the integration program was delivered to the identified target population), 2) establishment of continuum of care pathways addressing the location of care across the range of patient's severity of illness, 3) approach to patient transitions: referrals or warm handoffs, 4) location of the integration workforce, and 5) participants' mental model for integration. These constructs intertwine within an organization's historic and social context to produce locally adapted approaches to integrating care. Contextual factors, particularly practice type, influenced whether specialty mental health and substance use services were colocated within an organization. CONCLUSION: Interaction among 5 organizing constructs and practice context produces diverse expressions of integrated care. These constructs provide a framework for understanding how primary care and behavioral health services can be integrated in routine practice.

PURPOSE: This paper sought to describe how clinicians from different backgrounds interact to deliver integrated behavioral and primary health care, and the contextual factors that shape such interactions. METHODS: This was a comparative case study in which a multidisciplinary team used an immersion-crystallization approach to analyze data from observations of practice operations, interviews with practice members, and implementation diaries. The observed practices were drawn from 2 studies: Advancing Care Together, a demonstration project of 11 practices located in Colorado; and the Integration Workforce Study, consisting of 8 practices located across the United States. RESULTS: Primary care and behavioral health clinicians used 3 interpersonal strategies to work together in integrated settings: consulting, coordinating, and collaborating (3Cs). Consulting occurred when clinicians sought advice, validated care plans, or corroborated perceptions of a patient's needs with another professional. Coordinating involved 2 professionals working in a parallel or in a back-and-forth fashion to achieve a common patient care goal, while delivering care separately. Collaborating involved 2 or more professionals interacting in real time to discuss a patient's presenting symptoms, describe their views on treatment, and jointly develop a care plan. Collaborative behavior emerged when a patient's care or situation was complex or novel. We identified contextual factors shaping use of the 3Cs, including: time to plan patient care, staffing, employing brief therapeutic approaches, proximity of clinical team members, and electronic health record documenting behavior. CONCLUSION: Primary care and behavioral health clinicians, through their interactions, consult, coordinate, and collaborate with each other to solve patients' problems. Organizations can create integrated care environments that support these collaborations and health professions training programs should equip clinicians to execute all 3Cs routinely in practice.

BACKGROUND: The Agency for Healthcare Research and Quality (AHRQ) launched the EvidenceNOW Initiative to rapidly disseminate and implement evidence-based cardiovascular disease (CVD) preventive care in smaller primary care practices. AHRQ funded eight grantees (seven regional Cooperatives and one independent national evaluation) to participate in EvidenceNOW. The national evaluation examines quality improvement efforts and outcomes for more than 1500 small primary care practices (restricted to those with fewer than ten physicians per clinic). Examples of external support include practice facilitation, expert consultation, performance feedback, and educational materials and activities. This paper describes the study protocol for the EvidenceNOW national evaluation, which is called Evaluating System Change to Advance Learning and Take Evidence to Scale (ESCALATES). METHODS: This prospective observational study will examine the portfolio of EvidenceNOW Cooperatives using both qualitative and quantitative data. Qualitative data include: online implementation diaries, observation and interviews at Cooperatives and practices, and systematic assessment of context from the perspective of Cooperative team members. Quantitative data include: practice-level performance on clinical quality measures (aspirin prescribing, blood pressure and cholesterol control, and smoking cessation; ABCS) collected by Cooperatives from electronic health records (EHRs); practice and practice member surveys to assess practice capacity and other organizational and structural characteristics; and systematic tracking of intervention delivery. Quantitative, qualitative, and mixed methods analyses will be conducted to examine how Cooperatives organize to provide external support to practices, to compare effectiveness of the dissemination and implementation approaches they implement, and to examine how regional variations and other organization and contextual factors influence implementation and effectiveness. DISCUSSION: ESCALATES is a national evaluation of an ambitious large-scale dissemination and implementation effort focused on transforming smaller primary care practices. Insights will help to inform the design of national health care practice extension systems aimed at supporting practice transformation efforts in the USA. CLINICAL TRIAL REGISTRATION: NCT02560428 (09/21/15).

BACKGROUND AND OBJECTIVES: Epidural analgesia may increase survival after cancer surgery by reducing recurrence. This population-based study compared survival and treated recurrence after gastric cancer resection between patients receiving epidurals and those who did not. METHODS: We used the linked federal Surveillance, Epidemiology, and End Results Program/Medicare database to identify patients aged 66 years or older with nonmetastatic gastric carcinoma diagnosed 1996 to 2005 who underwent resection. Exclusions included diagnosis at autopsy, no Medicare Part B, familial cancer syndrome, emergency surgery, and laparoscopic procedures. Epidurals were identified by Current Procedural Terminology codes. Treated recurrence was defined as chemotherapy greater than or equal to 16 months and/or radiation greater than or equal to 12 months after surgery. Recurrence was compared by conditional logistic regression. Survival was compared via marginal Cox proportional hazards regression model. RESULTS: We identified 2745 patients, 766 of whom had epidural codes. Patients receiving epidurals were more likely to have regional disease, be white, and live in areas with relatively high socioeconomic status. Overall treated recurrence was 25.6% (27.5% epidural and 24.9% nonepidural). In the adjusted logistic regression, there was no difference in recurrence (odds ratio, 1.40; 95% confidence interval [CI], 0.96-2.05). Median survival did not differ: 28.1 months (95% CI, 24.8-32.3) in the epidural versus 27.4 months (95% CI, 24.8-30.0) in the nonepidural groups. The marginal Cox models showed no association between epidural use and mortality (adjusted hazard ratio, 0.93; 95% CI, 0.84-1.03). CONCLUSIONS: There was no difference between groups regarding treated recurrence or survival. Whether this is true or simply a result of insufficient power is unclear. Prospective studies are needed to provide stronger evidence.

BACKGROUND: Current research on primary care practice redesign suggests that outside facilitation can be an important source of support for achieving substantial change. OBJECTIVES: To analyse the specific sequence of strategies used by a successful practice facilitator during the American Academy of Family Physicians' (AAFP) National Demonstration Project (NDP). METHODS: This secondary analysis describes a sequence of strategies used to produce change in family medicine practices attempting to adopt a new model of care. The authors analysed qualitative data generated by one facilitator and six practices by coding facilitator field notes, site visit reports, qualitative summaries, depth interviews and email strings. RESULTS: The facilitator utilized practice member coaching in addition to consulting, negotiating and connecting approaches. Coaching strategies encouraged: (i) expansive, multi-directional, attentive styles of communication; (ii) solving practical problems together; (iii) modelling facilitative leadership and (iv) encouraging an expanded vision of care. Practice members who received consistent coaching reported internal shifts and new ways of conceptualizing work, not just success at implementing model components. They indicated that their facilitator had helped them think and behave in new ways while helping them achieve benchmarks. CONCLUSIONS: It was once believed that the transition from traditional models of family medicine practice to new models of care meant implementing new technological components, suggesting that outside facilitators should act as technological and care delivery consultants. However, coaches may be especially useful in helpful in practices undertake substantial changes.

PURPOSE: Community engagement (CE) and community-engaged research (CEnR) are increasingly recognized as critical elements in research translation. Process models to develop CEnR partnerships in rural and underserved communities are needed. METHOD: Academic partners transformed four established Community Health Improvement Partnerships (CHIPs) into Community Health Improvement and Research Partnerships (CHIRPs). The intervention consisted of three elements: an academic-community kickoff/orientation meeting, delivery of eight research training modules to CHIRP members, and local community-based participatory research (CBPR) pilot studies addressing childhood obesity. We conducted a mixed methods analysis of pre-/postsurveys, interviews, session evaluations, observational field notes, and attendance logs to evaluate intervention effectiveness and acceptability. RESULTS: Forty-nine community members participated; most (78.7%) attended five or more research training sessions. Session quality and usefulness was high. Community members reported significant increases in their confidence for participating in all phases of research (e.g., formulating research questions, selecting research methods, writing manuscripts). All CHIRP groups successfully conducted CBPR pilot studies. CONCLUSIONS: The CHIRP process builds on existing infrastructure in academic and community settings to foster CEnR. Brief research training and pilot studies around community-identified health needs can enhance individual and organizational capacity to address health disparities in rural and underserved communities.

To the Editors: We thank Dr. Englot for his comments regarding our recent article on the trends of pediatric epilepsy surgery utility in the United States, titled “Increasing utilization of pediatric epilepsy surgery in the United States between 1997 and 2009.”1 In contrast to the analysis in adult epilepsy surgery using the National Inpatient Sample (NIS),2 the distribution of pediatric epilepsy surgeries between high- and low-volume hospitals was stable throughout the study period (Fig. 1). We did observe, however, an increase in epilepsy hospitalization trends. Because analysis of the NIS and the Kid's Inpatient Database (KIDS) relies mainly on International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes, it is possible that an increase of epilepsy hospitalizations noted in both datasets may have been due to the change in coding practice.3 Further studies using independent data sources that do not depend on ICD-9-CM codes are certainly needed to substantiate these findings. None of the authors has any conflict of interest to disclose. We confirm that we have read the Journal's position on issues involved in ethical publication and affirm that this report is consistent with those guidelines. Drs. Koroukian and Schiltz were supported by the Clinical and Translational Science Collaborative of Cleveland, UL1TR000439 from the National Center for Advancing Translational Sciences (NCATS) component of the National Institutes of Health and NIH roadmap for Medical Research. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIH.

Boundaries, which are essential for the healthy functioning of individuals and organisations, can become problematic when they limit creative thought and action. In this article, we present a framework for promoting health across boundaries and summarise preliminary insights from experience, conversations and reflection on how the process of boundary spanning may affect health. Boundary spanning requires specific individual qualities and skills. It can be facilitated or thwarted by organisational context. Boundary spanning often involves risk, but may reap abundant rewards. Boundary spanning is necessary to optimise health and health care. Exploring the process, the landscape and resources that enable boundary spanning may yield new opportunities for advancing health. We invite boundary spanners to join in a learning community to advance understanding and health.

Emphasis has been placed on assessing the efficiency of clinical and translational research as part of the National Institutes of Health (NIH) goal to "improve human health." Improvements identified and implemented by individual organizations cannot address the research infrastructure needs of all clinical and translational research conducted. NIH's National Center for Advancing Translational Sciences (NCATS) has brought together 61 Clinical and Translational Science Award (CTSA) sites creating a virtual national laboratory that reflects the diversity and breadth of academic medical centers to collectively improve clinical and translational science. The annual Clinical Research Management workshop is organized by the CTSA consortium with participation from CTSA awardees, NIH, and others with an interest in clinical research management. The primary objective of the workshop is to disseminate information that improves clinical research management although the specific objectives of each workshop evolve within the consortium. The fifth annual workshop entitled "Learning by doing; applying evidence-based tools to re-engineer clinical research management" took place in June 2012. The primary objective of the 2012 workshop was to utilize data to evaluate, modify, and improve clinical research management. This report provides a brief summary of the workshop proceedings and the major themes discussed among the participants.

INTRODUCTION: This study evaluates the burden of multimorbidity (MM) across gradients of cognitive impairment (CI). METHODS: Using data from the 2010 Health and Retirement Study, we identified individuals with no CI, mild CI, and moderate/severe CI. In addition, we adopted an expansive definition of complex MM by accounting for the occurrence and co-occurrence of chronic conditions, functional limitations, and geriatric syndromes. RESULTS: In a sample of 18 913 participants (weighted n = 87.5 million), 1.93% and 1.84% presented with mild and moderate/severe CI, respectively. The prevalence of most conditions constituting complex MM increased markedly across the spectrum of CI. Further, the percentage of individuals presenting with 10 or more conditions was 19.9%, 39.3%, and 71.3% among those with no CI, mild CI, and moderate/severe CI, respectively. DISCUSSION: Greater CI is strongly associated with increased burden of complex MM. Detailed characterization of MM across CI gradients will help identify opportunities for health care improvement.

Monoclonal gammopathy of undetermined significance (MGUS) occurs in 3-7% of the elderly population, with higher prevalence in renal failure patients, and is associated with a 25-fold increased lifetime risk for plasma cell myeloma (PCM), also known as multiple myeloma. Using the California State Inpatient, Emergency Department, and Ambulatory Surgery Databases components of the Healthcare Cost and Utilization Project (HCUP), we sought to determine whether patients with MGUS who undergo solid organ allograft (n = 22,062) are at increased adjusted relative risk (aRR) for hematologic malignancy and other complications. Among solid organ transplant patients, patients with preexisting MGUS had higher aRR of PCM (aRR 19.46; 95% CI 7.05, 53.73; p < 0.001), venous thromboembolic events (aRR 1.66; 95% CI 1.15, 2.41; p = 0.007), and infection (aRR 1.24; 95% CI 1.06, 1.45; p = 0.007). However, when comparing MGUS patients with and without solid organ transplant, there was decreased aRR for PCM with transplant (aRR 0.34; 95% CI 0.13, 0.88; p = 0.027), and increased venous thromboembolic events (aRR 2.33; 95% CI 1.58, 3.44; p < 0.001) and infectious risks (aRR 1.44; 95% CI 1.23, 1.70; p < 0.001). While MGUS increased the risk of PCM overall following solid organ transplantation, there was lower risk of PCM development compared to MGUS patients who did not receive a transplant. MGUS should not preclude solid organ transplant.

OBJECTIVES: This study examined the degree of similarity between motivational interviewing (MI) methods and smoking cessation techniques that are routinely used by primary care physicians. Its purpose was to inform the development of more effective MI-based health behavior change training programs for primary care physicians. METHODS: Visits to primary care physicians were audio-recorded in northeast Ohio from 2005 to 2008. Doctor-patient talk about smoking cessation (n = 73) was analyzed for adherence to MI using the Motivational Interviewing Skills Code (MISC) version 2.1 behavioral coding system. Participating physicians were not provided with MI training as part of the study and were blinded as to the study's purpose. RESULTS: Physicians displayed MI adherent behaviors in 56% of discussions and MI nonadherent behaviors in 57%. The most common MI adherent statements involved affirming the patient; least common were requests for the patient's permission before raising concerns. The most frequent MI nonadherent behaviors were directing, confronting, and warning the patient. Physicians made simple reflections and complex reflections in 36% and 25% of visits, respectively. CONCLUSIONS: Physicians used both MI adherent and MI nonadherent behaviors in approximately equal proportions, suggesting a base of MI adherent smoking cessation counseling skills upon which additional MI skills can be built. Efforts to improve smoking-cessation effectiveness may involve providing training in brief MI models and additional MI skills, while reinforcing physicians' current use of MI adherent methods.

OBJECTIVE: To evaluate the relationship between body mass index (BMI) and spatiotemporal, kinematic, and kinetic gait parameters in chronic hemiparetic stroke survivors. DESIGN: Secondary analysis of data collected in a randomized controlled trial comparing two 12-week ambulation training treatments. SETTING: Academic medical center. PARTICIPANTS: Chronic hemiparetic stroke survivors (N = 108, >3 months poststroke) METHODS: Linear regression analyses were performed of BMI, and selected pretreatment gait parameters were recorded using quantitative gait analysis. MAIN OUTCOME MEASURES: Spatiotemporal, kinematic, and kinetic gait parameters. RESULTS: A series of linear regression models that controlled for age, gender, stroke type (ischemic versus hemorrhagic), interval poststroke, level of motor impairment (Fugl-Meyer score), and walking speed found BMI to be positively associated with step width (m) (β = 0.364, P < .001), positively associated with peak hip abduction angle of the nonparetic limb during stance (deg) (β = 0.177, P = .040), negatively associated with ankle dorsiflexion angle at initial contact of the paretic limb (deg) (β = -0.222, P = .023), and negatively associated with peak ankle power at push-off (W/kg) of the paretic limb (W/kg)(β = -0.142, P = .026). CONCLUSIONS: When walking at a similar speed, chronic hemiparetic stroke subjects with a higher BMI demonstrated greater step width, greater hip hiking of the paretic lower limb, less paretic limb dorsiflexion at initial contact, and less paretic ankle power at push-off as compared to stroke subjects with a lower BMI and similar level of motor impairment. Further studies are necessary to determine the clinical relevance of these findings with respect to rehabilitation strategies for gait dysfunction in hemiparetic patients with higher BMIs.

PURPOSE: To compare outcomes between women enrolling in Medicaid after being diagnosed with breast cancer and those referred to Medicaid through the Ohio Breast and Cervical Cancer Early Detection Program (BCCEDP). METHODS: Using linked data from the 2002 to 2008 Ohio Cancer Incidence Surveillance System, Medicaid, the BCCEDP database, and Ohio death certificates (through 2010), we identified women 40 to 64 years of age diagnosed with incident invasive breast cancer during the study years and enrolled in Medicaid 3 months before or after cancer diagnosis. We compared the following outcomes across BCCEDP one-time and repeat participants and nonparticipants: (1) cancer stage at diagnosis, (2) treatment delays, (3) receipt of standard treatment, and (4) survival. We conducted multivariable logistic regression and survival analysis to examine the association between BCCEDP participation and the outcomes of interest, controlling for potential confounders. RESULTS: We identified 427 and 654 BCCEDP participants and nonparticipants, respectively; 28.5% of BCCEDP women were repeat participants. Compared with nonparticipants, BCCEDP one-time and repeat participants were significantly less likely to be diagnosed with advanced-stage cancer (one-time: adjusted odds ratio [AOR], 0.64; 95% CI, 0.49 to 0.85; repeat: AOR, 0.34; 95% CI, 0.23 to 0.52), or experience delays in treatment initiation (one-time: adjusted hazard ratio [AHR], 1.29; 95% CI, 1.09 to 1.51; repeat: AHR, 1.38; 95% CI, 1.11 to 1.72). In addition, although we observed no difference in receipt of standard cancer treatment, BCCEDP participants experienced cancer-specific and overall survival benefits. CONCLUSION: Compared with nonparticipants, BCCEDP participants experienced earlier breast cancer stage at diagnosis, shorter time to treatment initiation, and survival benefits.

BACKGROUND: Recent studies suggest that managed care enrollees (MCEs) and fee-for-service beneficiaries (FFSBs) have become similar in case-mix over time; but comparisons of health outcomes have yielded mixed results. OBJECTIVE: To examine changes in differentials between MCEs and FFSBs both in case-mix and health outcomes over time. DESIGN: Temporal study of the linked Health and Retirement Study (HRS) and Medicare data, comparing case-mix and health outcomes between MCEs and FFSBs across 3 time periods: 1992-1998, 1999-2004, and 2005-2011. We used multivariable analysis, stratified by, and pooled across the study periods. The unit of analysis was the person-wave (n=167,204). SUBJECTS: HRS participants who were also enrolled in Medicare. MEASURES: Outcome measures included self-reported fair/poor health, 2-year self-rated worse health, and 2-year mortality. Our main covariate was a composite measure of multimorbidity (MM), MM0-MM3, defined as the co-occurrence of chronic conditions, functional limitations, and/or geriatric syndromes. RESULTS: The case-mix differential between MCEs and FFSBs persisted over time. Results from multivariable models on the pooled data and incorporating interaction terms between managed care status and study period indicated that MCEs and FFSBs were as likely to die within 2 years from the HRS interview (P=0.073). This likelihood remained unchanged across the study periods. However, MCEs were more likely than FFSBs to report fair/poor health in the third study period (change in probability for the interaction term: 0.024, P=0.008), but less likely to rate their health worse in the last 2 years, albeit at borderline significance (change in probability: -0.021, P=0.059). CONCLUSIONS: Despite the persistence of selection bias, the differential in self-reported fair/poor status between MCEs and FFSBs seems to be closing over time.

utility in the United States, titled "Increasing utilization of pediatric epilepsy surgery in the United States between 1997 and 2009." 1 In contrast to the analysis in adult epilepsy surgery using the National Inpatient Sample (NIS), 2 the distribution of pediatric epilepsy surgeries between high-and low-volume hospitals was stable throughout the study period (Fig. We did observe, however, an increase in epilepsy hospitalization trends. Because analysis of the NIS and the Kid's Inpatient Database (KIDS) relies mainly on International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes, it is possible that an increase of epilepsy hospitalizations noted in both datasets may have been due to the change in coding practice. 3 Further studies using independent data sources that do not depend on ICD-9-CM codes are certainly needed to substantiate these findings.