Impact of Genetic Counseling on Patient-Reported Electronic Cancer Family History Collection.

BACKGROUND: Cancer family history is a vital part of cancer genetic counseling (GC) and genetic testing (GT), but increasing indications for germline cancer GT necessitate less labor-intensive models of collection. We evaluated the impact of GC on patient pedigrees generated by an electronic cancer family history questionnaire (eCFHQ). METHODS: An Institutional Review Board-approved review of pedigrees collected through an eCFHQ was conducted. Paired pre-GC and post-GC pedigrees (n=1,113 each group) were analyzed independently by cancer genetic counselors for changes in patient-reported clinical history and to determine whether the pedigrees met NCCN GT criteria. Discrepancy in meeting NCCN GT criteria between pre-GC and post-GC pedigrees was the outcome variable of logistic regressions, with patient and family history characteristics as covariates. RESULTS: Overall, 780 (70%) patients had cancer (affected), 869 (78%) were female, and the median age was 57 years (interquartile range, 45-66 years; range, 21-91 years). Of the 1,113 pairs of pre-GC and post-GC pedigrees analyzed, 85 (8%) were blank, 933 (84%) were not discrepant, and 95 (9%) were discrepant in meeting any NCCN GT criteria. Of the discrepant pedigrees, n=79 (83%) became eligible for testing by at least one of the NCCN GT criteria after GC. Patients with discrepant pedigrees were more likely to report no or unknown history of GT (odds ratio [OR], 4.54; 95% CI, 1.66-18.70; P=.01, and OR, 18.47; 95% CI, 5.04-88.73; P<.0001, respectively) and belonged to racially and/or ethnically underrepresented groups (OR, 1.91; 95% CI, 1.08-3.25; P=.02). CONCLUSIONS: For most patients (84%), a standalone eCFHQ was sufficient to determine whether NCCN GT criteria were met. More research is needed on the performance of the eCFHQ in diverse patient populations.

Early Palliative Care Is Associated With Reduced Emergency Department Utilization in Pancreatic Cancer.

OBJECTIVES: Most patients with pancreatic cancer have high symptom burden and poor outcomes. Palliative care (PC) can improve the quality of care through expert symptom management, although the optimal timing of PC referral is still poorly understood. We aimed to assess the association of early PC on health care utilization and charges of care for pancreatic cancer patients. MATERIALS AND METHODS: We selected patients with pancreatic cancer diagnosed between 2000 and 2009 who received at least 1 PC encounter using the Surveillance, Epidemiology, and End Results (SEER)-Medicare. Patients who had unknown follow-up were excluded. We defined "early PC" if the patients received PC within 30 days of diagnosis. RESULTS: A total of 3166 patients had a PC encounter; 28% had an early PC. Patients receiving early PC were more likely to be female and have older age compared with patients receiving late PC (P<0.001). Patients receiving early PC had fewer emergency department (ED) visits (2.6 vs. 3.0 visits, P=0.004) and lower total charges of ED care ($3158 vs. $3981, P<0.001) compared with patients receiving late PC. Patients receiving early PC also had lower intensive care unit admissions (0.82 vs. 0.98 visits, P=0.006) and total charges of intensive care unit care ($14,466 vs. $18,687, P=0.01). On multivariable analysis, patients receiving early PC were significantly associated with fewer ED visits (P=0.007) and lower charges of ED care (P=0.018) for all patients. CONCLUSIONS: Early PC referrals were associated with lower ED visits and ED-related charges. Our findings support oncology society guideline recommendations for early PC in patients with advanced malignancies such as pancreatic cancer.

Influences for Gender Disparity in Academic Family Medicine in North American Medical Schools.

Background Women physicians continue to comprise the minority of leadership roles in Academic Family Medicine (AFM) faculty across North American medical schools. Our study quantified the current state of gender disparity by analyzing academic position, leadership ranking, and research productivity. Methods We generated a database for 6,746 AFM faculty members. Gender and academic profiles were obtained for 2,892 academic ranks and 1,706 leadership roles by searching faculty listings enlisted in Fellowship and Residency Electronic Interactive Database (FREIDA) and Canadian Resident Matching Service (CaRMS). To measure research productivity, we obtained bibliometric data: h-index, citations, and tenure from 2,383 faculty members using Elsevier's SCOPUS archives. Data analysis and h-index were formulated using Stata version 14.2 (StataCorp LP, College Station, TX). Results Our results indicated that women hold 46.11% (3,110/6,746) of faculty positions. The proportional composition decreased with increasing academic ranking (49.84% assistant, 46.78% associate, and 41.5% full professor). The same decreasing trend was demonstrated with leadership rank (57.14% minor leadership, 47.65% second-in-command, and 36.61 first-in-command). Compared to their gender counterparts, women in AFM demonstrated lower publication productivity as measured by citation number (p=0.04) and years of study (p=0.008). The final prediction equation model after multivariable analyses included gender, publications, citations, country of graduation, and years of active research (p<0.05). Conclusions The composition of academic family medicine faculty members included in this study demonstrated gender disparity. Inclusivity initiatives and policies to tackle the issue of female retention, promotion, and recruitment need to be further explored.

Care Setting as a Modifiable Predictor of Perioperative Cost and Outcomes following Elective Urinary Stone Surgery.

INTRODUCTION: We sought to identify predictors of index surgical care setting and to determine if care setting influences risk adjusted perioperative costs and/or 30-day revisits following elective surgery for urinary stones. METHODS: Using 2014 HCUP (Healthcare Cost and Utilization Project) all payer claims data from New York and Florida, we retrospectively identified 29,433 patients undergoing index ureteroscopy or shock wave lithotripsy. We used inverse probability of treatment weighting adjusted multivariable logistic and gamma regression to assess the association between index surgical care setting and 30-day revisits and total costs, respectively. RESULTS: Most urinary stone procedures (70.8%) were performed in the ambulatory setting. Underinsurance was associated with lower odds of undergoing surgery in the ambulatory setting (Medicaid vs private: OR 0.44, 95% CI 0.37-0.53; p <0.001; self-pay vs private: OR 0.21, 95% CI 0.17-0.26; p <0.001). Adjusted mean index surgical and 30-day acute care costs were significantly lower among ambulatory vs inpatient/emergency department cases ($4,746.10 vs $10,669.26 and $5,434.42 vs $11,729.39, both p <0.001), respectively. Ambulatory surgery was independently associated with lower odds of experiencing a 30-day revisit (OR 0.82, 95% CI 0.72-0.94; p=0.005). CONCLUSIONS: Urinary stone cases managed surgically in an ambulatory setting had lower risk adjusted costs and odds of a 30-day revisit compared to those managed in an inpatient setting. Our findings support use of ambulatory rather than inpatient based elective surgery for uncomplicated urinary stones. We invite clinicians and policymakers alike to reconsider clinical and nonclinical factors that influence pathways of care.

The Impact of Hospital Size on National Trends and Outcomes Following Open Esophagectomy.

Background and Objectives: Previous studies have demonstrated superior patient outcomes for thoracic oncology patients treated at high-volume surgery centers compared to low-volume centers. However, the specific role of overall hospital size in open esophagectomy morbidity and mortality remains unclear. Materials and Methods: Patients aged >18 years who underwent open esophagectomy for primary malignant neoplasia of the esophagus between 2002 and 2014 were identified using the National Inpatient Sample. Minimally invasive procedures were excluded. Discharges were stratified by hospital size (large, medium, and small) and analyzed using trend and multivariable regression analyses. Results: Over a 13-year period, a total of 69,840 open esophagectomy procedures were performed nationally. While the proportion of total esophagectomies performed did not vary by hospital size, in-hospital mortality trends decreased for all hospitals (large (7.2% to 3.7%), medium (12.8% vs. 4.9%), and small (12.8% vs. 4.9%)), although this was only significant for large hospitals (P < 0.01). After controlling for patient demographics, comorbidities, admission, and hospital-level factors, hospital length of stay (LOS), total inflation-adjusted costs, in-hospital mortality, and complications (cardiac, respiratory, vascular, and bleeding) did not vary by hospital size (all P > 0.05). Conclusions: After risk adjustment, patient morbidity and in-hospital mortality appear to be comparable across all institutions, including small hospitals. While there appears to be an increased push for referring patients to large hospitals, our findings suggest that there may be other factors (such as surgeon type, hospital volume, or board status) that are more likely to impact the results; these need to be further explored in the current era of episode-based care.

No Racial Disparities In Surgical Care Quality Observed After Coronary Artery Bypass Grafting In TRICARE Patients.

In the US, racial disparities in outcomes following coronary artery bypass grafting (CABG) are well documented. TRICARE insurance data represent a large population with universal insurance that allows for the robust assessment of the impact of such insurance on disparities in health care. This study examined racial differences in specific aspects of surgical care quality following CABG, using metrics endorsed by the National Quality Forum that included the prescription of beta-blockers and statins at discharge and thirty-day readmissions. There were no risk-adjusted differences in outcomes between African American and white patients insured through TRICARE. Our study provides a window into the potential impacts of universal insurance and an equal-access health care system on racial disparities in surgical care quality following CABG.

Development and Validation of a Bedside Risk Assessment for Sustained Prescription Opioid Use After Surgery.

Importance: The increased use of prescription opioid medications has contributed to an epidemic of sustained opioid use, misuse, and addiction. Adults of working age are thought to be at greatest risk for prescription opioid dependence. Objective: To develop a risk score (the Stopping Opioids After Surgery score) for sustained prescription opioid use after surgery in a working-age population using readily available clinical information. Design, Setting, and Participants: In this case-control study, claims from TRICARE (the insurance program of the US Department of Defense) for working-age adult (age 18-64 years) patients undergoing 1 of 10 common surgical procedures from October 1, 2005, to September 30, 2014, were queried. A logistic regression model was used to identify variables associated with sustained prescription opioid use. The point estimate for each variable in the risk score was determined by its ß coefficient in the model. The risk score for each patient represented the summed point totals, ranging from 0 to 100, with a lower score indicating lower risk of sustained prescription opioid use. Data were analyzed from September 25, 2018, to February 5, 2019. Exposures: Exposures were age; race; sex; marital status; socioeconomic status; discharge disposition; procedure intensity; length of stay; intensive care unit admission; comorbid diabetes, liver disease, renal disease, malignancy, depression, or anxiety; and prior opioid use status. Main Outcomes and Measures: The primary outcome was sustained prescription opioid use, defined as uninterrupted use for 6 months following surgery. A risk score for each patient was calculated and then used as a predictor of sustained opioid use after surgical intervention. The area under the curve and the Brier score were used to determine the accuracy of the scoring system and the Hosmer-Lemeshow goodness-of-fit test was used to evaluate model calibration. Results: Of 86 356 patients in the analysis (48 827 [56.5%] male; mean [SD] age, 46.5 [14.5] years), 6365 (7.4%) met criteria for sustained prescription opioid use. The sample used for model generation consisted of 64 767 patients, while the validation sample had 21 589 patients. Prior opioid exposure was the factor most strongly associated with sustained opioid use (odds ratio, 13.00; 95% CI, 11.87-14.23). The group with the lowest scores (<31) had a mean (SD) 4.1% (2.5%) risk of sustained opioid use; those with intermediate scores (31-50) had a mean (SD) risk of 14.9% (6.3%); and those with the highest scores (>50) had a mean (SD) risk of 35.8% (3.6%). Conclusions and Relevance: This study developed an intuitive and accessible opioid risk assessment applicable to the care of working-age patients following surgery. This tool is scalable to clinical practice and can potentially be incorporated into electronic medical record platforms to enable automated calculation and clinical alerts that are generated in real time.

Association of Medicaid Expansion Policy with Outcomes in Homeless Patients Requiring Emergency General Surgery.

BACKGROUND: Medicaid expansion has reduced obstacles faced in receiving care. Emergency general surgery (EGS) is a clinical event where delays in appropriate care impact outcomes. Therefore, we assessed the association between non-Medicaid expansion policy and multiple outcomes in homeless patients requiring EGS. METHODS: We used 2014 State Inpatient Database to identify homeless individuals admitted with a primary EGS diagnosis who underwent an EGS procedure. States were divided into those that did and did not implement Medicaid expansion. Multivariable quantile regression was used to examine associations between non-Medicaid expansion states and (1) length of stay and (2) total index hospital charges within the homeless population. Multivariable logistic regression was used to assess the associations between non-Medicaid expansion and (1) mortality, (2) surgical complications, (3) discharge against medical advice, and (4) home healthcare. RESULTS: A total of 6930 homeless patients were identified. Of these, 435 (6.2%) were in non-expansion states. Non-Medicaid expansion was associated with higher charges (coef: $46,264, 95% CI 40,388-52,139). There were non-significant differences in mortality (OR 1.4, 95% CI 0.79-2.62; p = 0.2) or surgical complications (OR 1.16, 95% CI 0.7-1.8; p = 0.4). However, homeless individuals living in non-expansion states did have higher odds of being discharged against medical advice (OR 2.1, 95% CI 1.08-4.05; p = 0.02), and lower odds of receiving home healthcare (OR 0.6, 95% CI 0.4-0.8; p = 0.01). CONCLUSION: Homeless patients living in Medicaid expansion states had lower odds of being discharged against medical advice, higher likelihood of receiving home healthcare and overall lower total index hospital charges.

Prior Prescription Opioid Use and Its Influence on Opioid Requirements After Orthopedic Trauma.

BACKGROUND: Prior opioid use has been shown to be associated with adverse outcomes in surgical and trauma patients. We sought to evaluate the influence of prior opioid use on prescription opioid requirements after orthopedic trauma. MATERIALS AND METHODS: This was a retrospective review of TRICARE claims (2006-2014). We evaluated the records of 11,752 patients treated for orthopedic injuries. Surveillance for prior opioid exposure extended to 6 mo before the traumatic event, with similar postinjury surveillance. Preinjury opioid use was categorized as unexposed, exposed without sustained use (nonsustained users), and sustained use (6 mo or longer of continuous opioid prescriptions without interruption). Multivariable Cox proportional hazard models were used to adjust for confounding and determine factors independently associated with the discontinuation of prescription opioid use after traumatic injury. RESULTS: Prior opioid exposure among nonsustained users (hazard ratio 0.78; 95% CI 0.74, 0.83) and sustained use at the time of injury (hazard ratio 0.40; 95% CI: 0.35, 0.47) were associated with lower likelihoods of opioid discontinuation. Additional factors associated with lower likelihoods of opioid discontinuation included our proxy for lower socioeconomic status, history of depression or anxiety, injury severity, and intensive care unit admission. CONCLUSIONS: Prior opioid use is one of the strongest predictors of continued use following treatment, along with socioeconomic status, behavioral health disorders, and severity of injury. Appropriate discharge planning and early engagement of ancillary services in individuals with one or more of the risk factors identified here may reduce the likelihood of sustained opioid use after injury.

Bibliometrics of Fifty Most-Cited Articles on the Mental Health of Immigrants Living in the United States.

The premise of our study was to identify the 50 most frequently cited articles on the mental and behavioral health of immigrant and refugee populations in the USA using the Thomas Reuters' WOS database. Articles were reviewed for inclusion by a panel comprised of two specialist physicians and a political scientist. Citations ranged from 69 to 520. Almost half of all articles (n = 23) focus on Hispanic populations. 32 articles employed a cross-sectional study design. Sample sizes ranged from 8,000,000 to 20. Over half of all (n = 30) articles were published between 2000 and 2012 in 22 journals, covering 38 research areas. The total number of institutional affiliations was 148, averaging at 3 per article. Our recommendations state: diversify sampling in terms of ethnic and racial backgrounds; develop a uniform instrument for immigrant and refugee mental health; and conduct comparative studies to examine the differences in the mental health among diverse communities.

Impact of Affordable Care Act Insurance Expansion on Pre-Hospital Access to Care: Changes in Adult Perforated Appendix Admission Rates after Medicaid Expansion and the Dependent Coverage Provision.

BACKGROUND: The Affordable Care Act (ACA) changed the landscape of insurance coverage, allowing young adults to remain on their parents' insurance until age 26 (Dependent Coverage Provision [DCP]) and states to optionally expand Medicaid up to 133% of the federal poverty level. Although both improved insurance coverage, little is known about the ACA's impact on observed receipt of timely access to acute care. The objective of this study was to compare changes in insurance coverage and perforation rates among hospitalized adults with acute appendicitis "after vs before" Medicaid expansion and the DCP using an Agency for Healthcare Research and Quality (AHRQ)-certified metric designed to measure pre-hospital access to care. STUDY DESIGN: We performed a quasi-experimental, difference-in-difference (DID) analysis of 2008-2015 state-level inpatient claims. RESULTS: Adults, aged 19 to 64, in expansion states experienced an absolute 7.7 percentage point decline in uninsured (95% CI 7.5 to 7.9) after Medicaid expansion compared with nonexpansion states. This coincided with a 5.4 percentage point drop in admissions for perforated appendicitis (95% CI 5.0 to 5.8) that was most pronounced among young adults, aged 26 to 34, just age-ineligible for the DCP (DID: 11.5 percentage points). Medicaid expansion insurance changes were 4.1 times larger than those encountered under the DCP (DID: 1.9). They affected all population subgroups and significantly reduced access-related disparities in race/ethnicity and lower-income communities. Although both Medicaid expansion and the DCP were associated with significant insurance gains, those attributable to the DCP were more concentrated among more privileged patients. Despite this trend, both policies resulted in larger reductions in perforation rates for historically uninsured and underserved groups. CONCLUSIONS: Reductions in uninsured after Medicaid expansion and the DCP were associated with significant reductions in perforated appendix admission rates. Improvements in access to acute surgical care suggest that maintained/continued insurance expansion could lead to fewer delays, better patient outcomes, and reductions in disparities among the most at-risk populations.

Gender Disparity in Leadership Positions of General Surgical Societies in North America, Europe, and Oceania.

Background  Despite the number of female medical-school applicants reaching an all-time high and the increasing number of females in surgical training, males retain an overwhelming majority in senior surgical academic positions and formal leadership positions. This study aims to better understand the extent of and influences for gender disparity in general surgical societies throughout North America, Europe, and Oceania.  Methods  Data collection for this retrospective cross-sectional study took place between June and December 2017. Committee and subcommittee members from the eight selected general surgical societies that met the inclusion criteria (n = 311) were compiled into an Excel spreadsheet in which the data was recorded. Analyzed metrics included university academic ranking, surgical society leadership position, h-index, number of citations, and total publications. SCOPUS database (Elsevier, Amsterdam, Netherlands) was used to generate author metrics, and STATA version 14.0 (StataCorp, College Station, TX) was used for statistical analysis. Results Overall, 83.28% of members of the entities we studied were male and 16.72% were females. Males had significantly higher representation than females in all societies (Pearson chi2 = 29.081; p-value = 0.010). Females were underrepresented in all society leadership positions and university academic rankings. Male members had a higher median h-index, more number of citations, and more total publications. Conclusions The composition of the general surgical societies included in this study demonstrated significant gender disparity. Female inclusivity initiatives and policies must be initiated to promote greater research productivity and early career opportunities for female surgeons in the specialty of general surgery.

Characteristics and impact of the most-cited palliative oncology studies from 1995 to 2016.

BACKGROUND: Palliative care, as a relatively young field within medicine, has increasingly used original research to validate and standardize its practice. In particular, palliative care has been incorporated into oncology to better address end-of-life decisions and care. The goal of this study is to identify seminal studies in the field of palliative oncology while more broadly characterizing the trends across the literature. METHODS: The publication databases Scopus and Web of Science were queried using predefined search terms to identify palliative oncology studies published between 1995 and 2016. The 100 most-cited articles from the time periods 1995-2005 and 2006-2016 were selected and analysed for publication data and study content. RESULTS: Palliative oncology studies were found to primarily examine patients with multiple rather than single cancer types and rarely were randomized controlled trials. Early research topics of pain, symptoms, and survival studies have been replaced by the issues of access to care, healthcare utilization, and religion and spirituality. CONCLUSIONS: By identifying and analyzing notable studies in palliative oncology, we found areas of research that are commonly investigated or overlooked and identified model studies that highlight the need for additional disease-specific randomized control trials to provide high quality clinical evidence in the field.

Palliative care and end-of-life health care utilization in elderly patients with pancreatic cancer.

BACKGROUND: Palliative care has been associated with improved survival and quality of life, with lower rate of end-of-life health care utilization and cost. We examined trends in palliative care utilization in older pancreatic cancer patients. METHODS: Pancreatic cancer patients with and without palliative care consults were identified using the Surveillance, Epidemiology, and End Results (SEER)-Medicare linked database between 2000 and 2009. Trend of palliative care use was studied. Emergency room/intensive care unit (ICU) utilization and costs in the last 30 days of life were compared between both groups using propensity score-matched (PSM) analysis. RESULTS: Of the 54,130 patients, 3,166 (5.8%) received palliative care and 70% received it in the last 30 days of life. The proportion of patients receiving palliative care increased from 1.4% in 2000 to 7.4% in 2009 (P<0.001). Patients with palliative care were more likely to be older, Asian and women. In the unmatched and PSM population, the average visits to the ER in the last 30 days of life were significantly higher for patients who received palliative care, and had a significantly higher cost of care. Similarly, ICU length of stay in the last 30 days of life was higher in patients who did not receive palliative care in both PSM and unmatched patients. Cost of care and number of ICU admissions were not different between palliative and non-palliative care groups in PSM and unmatched patients. CONCLUSIONS: In this study of Medicare patients with pancreatic cancer, palliative care use has increased between 2000 and 2009. Palliative care was largely offered close to the end of life and was not associated with reduced health care utilization or cost.

Trends in Outcomes of Patients With Metastatic Cancer Undergoing Intubation and Mechanical Ventilation: Results of the National Hospital Discharge Survey.

Background: There has been an overall decline in intensive care unit mortality over the past 2 decades, including in patients undergoing intubation and mechanical ventilation (MV). Whether this decline extends to patients with metastatic cancer remains unknown. We analyzed the outcomes of patients with metastatic cancer undergoing intubation/MV using the National Hospital Discharge Survey (NHDS) database from 2001 to 2010. Methods: Diagnosis and procedure codes were used to identify patients with metastatic cancer who underwent intubation/MV. Demographics, diagnoses, length of stay (LOS), and discharge information were abstracted. Multivariate linear and logistic regression models with weighted analysis were conducted to study trends in outcomes. Results: During the 10-year study period, 200,350 patients with metastatic cancer and who underwent intubation/MV were identified; the mean age was 65.3 years and 46.2% were men. There was an increase in the total number of patients with metastatic cancer who underwent intubation/MV during the study period, from 36,881 in 2001-2002 to 51,003 in 2009-2010 (P<.001). The overall inpatient mortality rate was 57.3%, discharge to a care facility (DTCF) rate was 40.9% among patients alive at discharge, and mean LOS was 11.1 days. No significant trends were seen in rates of mortality, DTCF, or LOS from 2001 to 2010. Conclusions: In this national database, there was an increase in the number of patients with metastatic cancer who underwent intubation/MV. These patients had high rates of inpatient mortality and DTCF, which did not improve during the study period. Therefore, novel solutions are required to improve outcomes for these patients.

Feasibility of Wearable Physical Activity Monitors in Patients With Cancer.

PURPOSE: The feasibility of using physical activity monitors (PAMs) to measure functional status in patients with cancer is unclear. We aimed to determine the feasibility of using PAMs to longitudinally assess physical activity and performance status (PS) in patients with cancer. METHODS: Patients with cancer who had Eastern Cooperative Oncology Group (ECOG) PS of 0 to 2 and were receiving systemic therapy were enrolled in a prospective pilot trial of PAM use. Feasibility was defined as patients using the PAM for > 50% of the observation period. We correlated PAM-reported measures with scores from ECOG PS and quality-of-life tools (Functional Assessment of Cancer Therapy-General [FACT-G], Quick Inventory of Depressive Symptoms-Self-Rated 16 [QIDS-SR16], and Brief Fatigue Inventory [BFI]) using Pearson's correlation test. Patients were surveyed regarding their experience with PAMs at study completion. RESULTS: In all, 24 patients were enrolled; mean age was 54 years, 16 (67%) were women, and 19 (79%) were white. Twenty-three patients (96%) met the primary end point of feasibility. The median duration of follow-up was 69 days. Mean PAM-measured steps for ECOG PS of 0, 1, and 2 were 5,911, 1,890, and 845 steps per day, respectively ( P = .002). Minimum steps per day correlated with BFI ( r = -0.53; P < .01), FACT-G ( r = 0.45; P = .02), and QIDS-SR16 ( r = -0.57; P < .01). Eighteen patients (75%) reported a positive experience with the PAM. CONCLUSION: PAMs are a feasible tool for measuring long-term physical activity in patients with cancer who are receiving systemic therapy. PAM-derived measures correlated with clinician-assessed PS.

The Top 100 Most-Cited Articles in Stroke Imaging: A Bibliometric Analysis.

PURPOSE: The goal of our study was to compile a list of the top 100 most-cited articles in stroke imaging literature across all peer-reviewed scientific journals. These articles were then analyzed to identify current trends in stroke imaging research and determine the characteristics of highly-cited articles. MATERIALS AND METHODS: A database of the top 100 most-cited articles was created using Scopus and Web of Science. Articles were reviewed for applicability by 2 fellowship-trained radiologists with over 10 years of combined experience in neuroimaging. The following information was collected from each article: Article Title, Scopus Citations, Year of Publication, Journal, Journal Impact Factor, Authors, Number of Institutions, Country of Origin, Study Topic, Study Design, and Sample Size. RESULTS: Citations for the top 100 most-cited articles ranged from 159-810, and citations per year ranged from 5.7-516.0. Most of articles were published between 1996 and 2000 (n = 43). Articles were published across 18 journals, most commonly in Stroke (n = 40). Magnetic resonance imaging was the focus in 46 articles, computed tomogrphy in 16, and functional magnetic resonance imaging in 10. The most common study topic is prognostic use of an imaging modality (n = 27). CONCLUSIONS: Our study helps to characterize the field and identify the characteristics of most-cited articles.

Bibliometric Analysis of Manuscript Characteristics That Influence Citations: A Comparison of Six Major Radiology Journals.

OBJECTIVE: The objective of our study was to investigate radiology manuscript characteristics that influence citation rate, capturing features of manuscript construction that are discrete from study design. MATERIALS AND METHODS: Consecutive articles published from January 2004 to June 2004 were collected from the six major radiology journals with the highest impact factors: Radiology (impact factor, 5.076), Investigative Radiology (2.320), American Journal of Neuroradiology (AJNR) (2.384), RadioGraphics (2.494), European Radiology (2.364), and American Journal of Roentgenology (2.406). The citation count for these articles was retrieved from the Web of Science, and 29 article characteristics were tabulated manually. A point-biserial correlation, Spearman rank-order correlation, and multiple regression model were performed to predict citation number from the collected variables. RESULTS: A total of 703 articles-211 published in Radiology, 48 in Investigative Radiology, 106 in AJNR, 52 in RadioGraphics, 129 in European Radiology, and 157 in AJR-were evaluated. Punctuation was included in the title in 55% of the articles and had the highest statistically significant positive correlation to citation rate (point-biserial correlation coefficient [rpb] = 0.85, p < 0.05). Open access status provided a low-magnitude, but significant, correlation to citation rate (rpb = 0.140, p < 0.001). The following variables created a significant multiple regression model to predict citation count (p < 0.005, R2 = 0.186): study findings in the title, abstract word count, abstract character count, total number of words, country of origin, and all authors in the field of radiology. CONCLUSION: Using bibliometric knowledge, authors can craft a title, abstract, and text that may enhance visibility and citation count over what they would otherwise experience.