Patient, Hospital, and Geographic Disparities in Laparoscopic Surgery Use Among Surveillance, Epidemiology, and End Results-Medicare Patients With Colon Cancer

Accuracy of Cancer Registry Primary Payer Information and Implications for Policy Research

BACKGROUND

Cancer registry-based "primary payer at diagnosis" (PPDx) data are commonly used to evaluate the effect of insurance on cancer care outcomes, yet little is known about how well they capture Medicaid or Medicare enrollment.

METHODS

We linked the National Cancer Institute's Surveillance, Epidemiology, and End Results registry data to monthly Centers for Medicare and Medicaid Services (CMS) Medicaid and Medicare enrollment records, state-year Medicaid policy, and managed care enrollment. We selected adults aged 19-64 years diagnosed between 2007 and 2011. We used bivariate analyses to compare PPDx to CMS enrollment at diagnosis month and assessed underreporting rates by patient characteristics and state-year policy.

RESULTS

PPDx reported 7.8% Medicare and 10.1% Medicaid, whereas CMS enrollment indicated 5.5% Medicare, 10.4% Medicaid, and 3.4% dual Medicare-Medicaid (N = 896,031). Positive predictive values for PPDx assignment to Medicaid and Medicare were 65.3% and 75.4%, with false negative rates of 52.0% and 33.8%, respectively. Medicaid underreporting was higher in low (56.5%) versus high (50.8%) poverty areas, for males (56.1%) versus females (48.9%), for Medicaid poverty expansion or waiver enrolled (63.8%) versus cash assistance-related eligibility (47.3%), and in states with large managed care enrollment (all P < 0.001). If Medicaid and Medicare enrollment data were used to edit PPDx, 12.0% of persons would switch primary payer assignment.

CONCLUSIONS

Registry-reported PPDx fails to fully capture Medicaid and Medicare enrollment, which may result in biased estimates of insurance-related policy impacts. Enhancement with objective enrollment data could reduce measurement error and bias in estimates necessary to support policy assessment.

Understanding Disparities in Receipt of Complex Gastrointestinal Cancer Surgery at a Small Geographic Scale

OBJECTIVE

To define neighborhood-level disparities in the receipt of complex cancer surgery.

BACKGROUND

Little is known about the geographic variation of receipt of surgery among patients with complex gastrointestinal (GI) cancers, especially at a small geographic scale.

METHODS

This study included individuals diagnosed with 5 invasive, nonmetastatic, complex GI cancers (esophagus, stomach, pancreas, bile ducts, liver) from the Ohio Cancer Incidence Surveillance System during 2009 and 2018. To preserve patient privacy, we combined US census tracts into the smallest geographic areas that included a minimum number of surgery cases (n=11) using the Max-p-regions method and called these new areas "MaxTracts." Age-adjusted surgery rates were calculated for MaxTracts, and the Hot Spot analysis identified clusters of high and low surgery rates. US Census and CDC PLACES were used to compare neighborhood characteristics between the high- and low-surgery clusters.

RESULTS

This study included 33,091 individuals with complex GI cancers located in 1006 MaxTracts throughout Ohio. The proportion in each MaxTract receiving surgery ranged from 20.7% to 92.3% with a median (interquartile range) of 48.9% (42.4-56.3). Low-surgery clusters were mostly in urban cores and the Appalachian region, whereas high-surgery clusters were mostly in suburbs. Low-surgery clusters differed from high-surgery clusters in several ways, including higher rates of poverty (23% vs. 12%), fewer married households (40% vs. 50%), and more tobacco use (25% vs. 19%; all P <0.01).

CONCLUSIONS

This improved understanding of neighborhood-level variation in receipt of potentially curative surgery will guide future outreach and community-based interventions to reduce treatment disparities. Similar methods can be used to target other treatment phases and other cancers.

Research and Publication Trends in Pediatric Surgery in Latin America: A Bibliometric and Visual Analysis from 2012 to 2021

INTRODUCTION

Pediatric surgery is a developing specialty with increasing volume in Latin America. However, the research and scientific activity trends carried out in this region in recent years are unknown. This study aimed to analyze and visualize Latin American research in pediatric surgery from 2012 to 2021.

MATERIAL AND METHODS

Bibliometric cross-sectional study of scientific articles on pediatric surgery published by Latin American authors from 2012 to 2021 in Scopus was performed. Statistical and visual analysis was performed with R programming language and VOS viewer.

RESULTS

449 articles were found. Observational studies (44.7%; n = 201), case reports (20.4%; n = 92) and narrative reviews (11.4%; n = 51) were found to be the most common study designs. The published articles were predominantly monocentric (73.1%; n = 328), only 17% (n = 76) involved authors from 2 or more countries, and mostly there was no collaboration with high-income countries (80.6%; n = 362). The Journal of Pediatric Surgery was the journal with the highest volume of articles published (n = 37). The most used terms were Laparoscopy, Complications, and Liver Transplantation, and the countries with the highest number of articles published were Brazil and Argentina.

CONCLUSIONS

This study found a progressive increase in the scientific activity of Latin authors in pediatric surgery from 2012 to 2021. The evidence produced was mainly from observational studies and case reports, predominantly conducted in Brazil. Multinational and international collaboration was low; the most frequent topics of interest were laparoscopy and minimally invasive surgery.

LEVELS OF EVIDENCE

IV.

Availability of laparoscopic surgery in Mexico's public health system: a nationwide retrospective analysis

Background

Laparoscopic surgery remains limited in low-resource settings. We aimed to examine its use in Mexico and determine associated factors.

Methods

By querying open-source databases, we conducted a nationwide retrospective analysis of three common surgical procedures (i.e., cholecystectomies, appendectomies, and inguinal hernia repairs) performed in Mexican public hospitals in 2021. Procedures were classified as laparoscopic based on ICD-9 codes. We extracted patient (e.g., insurance status), clinical (e.g., anaesthesia technique), and geographic data (e.g., region) from procedures performed in hospitals and ambulatories. Multivariable analysis with random forest modelling was performed to identify associated factors and their importance in adopting laparoscopic approach.

Findings

We included 97,234 surgical procedures across 676 public hospitals. In total, 16,061 (16.5%) were performed using laparoscopic approaches, which were less common across all procedure categories. The proportion of laparoscopic procedures per 100,000 inhabitants was highest in the northwest (22.2%, 16/72) while the southeast had the lowest (8.3%, 13/155). Significant factors associated with a laparoscopic approach were female sex, number of municipality inhabitants, region, anaesthesia technique, and type of procedure. The number of municipality inhabitants had the highest contribution to the multivariable model.

Interpretation

Laparoscopic procedures were more commonly performed in highly populated, urban, and wealthy northern areas. Access to laparoscopic techniques was mostly influenced by the conditions of the settings where procedures are performed, rather than patients' non-modifiable characteristics. These findings call for tailored interventions to sustainably address equitable access to minimally invasive surgery in Mexico.

Funding

None.

The Intersection of Race and Rurality and its Effect on Colorectal Cancer Survival

INTRODUCTION

Outcomes in colorectal cancer treatment are historically worse in Black people and residents of rural areas. Purported reasons include factors such as systemic racism, poverty, lack of access to care, and social determinants of health. We sought to determine whether outcomes worsened when race and rural residence intersected.

METHODS

The National Cancer Database was queried for individuals with stage II-III colorectal cancer (2004-2018). To examine the intersectionality of race/rurality on outcomes, race (Black/White) and rurality (based on county) were combined into a single variable. Main outcome of interest was 5-year survival. Cox hazard regression analysis was performed to determine variables independently associating with survival. Control variables included age at diagnosis, sex, race, Charlson-Deyo score, insurance status, stage, and facility type.

RESULTS

Of 463 948 patients, 5717 were Black-Rural, 50 742 were Black-Urban, 72 241 were White-Rural, and 33 5271 were White-Urban. Five-year mortality rate was 31.6%. Univariate Kaplan-Meier survival analysis demonstrated race-rurality was associated with overall survival (P < .001), with White-Urban having the greatest mean survival length (47.9 months) and Black-Rural with the lowest (46.7 months). Multivariable analysis found that Black-Rural (1.26, 95% confidence interval [1.20-1.32]), Black-Urban (1.16, [1.16-1.18]), and White-Rural (HR: 1.05; (1.04-1.07) had increased mortality when compared to White-Urban individuals (P < .001).

CONCLUSION

Although White-Rural individuals fared worse than White-Urban, Black individuals fared worst of all, with the poorest outcomes observed in Black individuals in rural areas. This suggests that both Black race and rurality negatively affect survival, and act synergistically to further worsen outcomes.

Trends in utilization of laparoscopic colectomy according to race: an analysis of the NIS database

BACKGROUND

Laparoscopic colectomy has been associated with improved recovery and decreased complications when compared to an open approach. Consequently, the rates of laparoscopic colectomy have increased. Race has been identified as a factor that influences a patient's likelihood of undergoing laparoscopic colectomy. Therefore, the purpose of this study is to analyze the rates of laparoscopic colectomy stratified by race over time.

METHODS

Patients were selected using procedure codes for colectomy within the National Inpatient Sample (NIS) database from 2009 to 2018. The primary independent variable was race (Black, BL; Hispanic, HI; White, WH), and the primary outcome was surgical approach (laparoscopic vs open). Covariates included age, sex, case complexity, insurance status, income, year of surgery, urbanicity, region, bedsize, and teaching status. We examined the univariable association of race with laparoscopic vs open colectomy with chi-square. We used multivariable logistic regression to examine the association of race with procedure type adjusting for covariates. All analyses were done using SAS (version 9.4, Cary, NC) with p < .05 considered significant.

RESULTS

267,865 patients (25,000 BL, 19,685 HI, and 223,180 WH) were identified. Laparoscopy was used in 47% of cases, and this varied significantly by race (BL 44%, HI 49%, WH 47%, p < .0001). After adjusting for covariates, Black patients had significantly lower adjusted odds of undergoing laparoscopic colectomy vs White patients (aOR 0.92, p < 0.0001). Utilization of laparoscopy was similar in Hispanic compared to White patients (aOR 1.00, p = 0.9667). Racial disparity in the adjusted odds of undergoing laparoscopic colectomy was persistent over time.

CONCLUSION

Race was independently associated with the rate of laparoscopic colectomy, with Black patients less likely to receive laparoscopic surgery than White patients. This disparity persisted over a decade. Attention should be paid to increasing the rates of laparoscopic colectomy in under-represented populations in order to optimize surgical care and address racial disparities.

Audit of laparoscopic surgery for colon cancer in Morocco: A report of the results of a prospective multicentre cohort study

Background

Patients and methods

Results

Conclusions

•

Laparoscopy is the standard technique for colon cancer in rich countries. Little data exists about lower income countries.

•

We evaluated laparoscopy for colon cancer by comparing it to open colon resections in a low-mid income country.

•

We found that Laparoscopy is performed by few surgeons, who apply strict patient selection for laparoscopic cases.

•

Patients in the laparoscopy group also had lower quality resections compared to open surgery.

•

The challenges identified will require more focus on training, certification, centralization, and standardisation of care.

Association of hospital factors and socioeconomic status with the utilization of minimally invasive surgery for colorectal cancer over a decade

BACKGROUND

Surgical resection is a mainstay of treatment for colorectal cancer (CRC). Minimally invasive surgery (MIS) has been shown to have improved outcomes compared to open procedures for colorectal malignancy. While use of MIS has been increasing, there remains large variability in its implementation at the hospital and patient level.

OBJECTIVE

The purpose of this study was to identify disparities in sex, race, location, patient income status, insurance status, hospital region, bed size and teaching status for the use of MIS in the treatment of CRC.

METHODS

This was a retrospective cohort study using the Nationwide Inpatient Sample Database. Between 2008 and 2017, there were 412,292 hospitalizations of adult patients undergoing elective colectomy for CRC. The primary outcome was use of MIS during hospitalization.

RESULTS

Overall, the frequency of open colectomies was higher than MIS (56.56% vs. 43.44%). Black patients were associated with decreased odds of MIS use during hospitalization compared to White patients (OR 0.921, p = 0.0011). As the county population where patients resided decreased, odds of MIS also significantly decreased as compared to central counties of metropolitan areas. As income decreased below the reference of $71,000, odds of MIS also significantly decreased. Medicaid and uninsured patients had decreased odds of MIS use during hospitalization compared to private insurance (OR 0.751, p < 0.0001 and OR 0.629, p < 0.0001 respectively). Rural and urban non-teaching hospitals were associated with decreased odds of MIS as compared to urban teaching hospitals (OR 0.523, p < 0.0001 and OR 0.837, p < 0.0001 respectively). Hospitals with a small bed size were also associated with decreased MIS during hospitalizations (OR 0.888, p < 0.0001).

CONCLUSIONS

Marked hospital level and socioeconomic disparities exist for utilization of MIS for colorectal cancer. Strategies targeted at reducing these gaps have the potential to improve surgical outcomes and cancer survival.

Colorectal cancer disparities across the continuum of cancer care: A systematic review and meta-analysis

BACKGROUND

Disparate colorectal cancer outcomes persist in vulnerable populations. We aimed to examine the distribution of research across the colorectal cancer care continuum, and to determine disparities in the utilization of Surgery among Black patients.

METHODS

A systematic review and meta-analysis of colorectal cancer disparities studies was performed. The meta-analysis assessed three utilization measures in Surgery.

RESULTS

Of 1,199 publications, 60% focused on Prevention, Screening, or Diagnosis, 20% on Survivorship, 15% on Treatment, and 1% on End-of-Life Care. A total of 16 studies, including 1,110,674 patients, were applied to three meta-analyses regarding utilization of Surgery. Black patients were less likely to receive surgery, twice as likely to refuse surgery, and less likely to receive laparoscopic surgery, when compared to White patients.

CONCLUSIONS

Since 2011, the majority of research focused on prevention, screening, or diagnosis. Given the observed treatment disparities among Black patients, future efforts to reduce colorectal cancer disparities should include interventions within Surgery.

Long non-coding RNA TPTEP1 exerts inhibitory effects on hepatocellular carcinoma by impairing microRNA-454-3p-mediated DLG5 downregulation

BACKGROUND

Hepatocellular carcinoma (HCC) is usually diagnosed at late stages, making it the second cause of malignancy-related death across the world. Long noncoding RNAs (lncRNAs) are of significance to tumorigenesis, highly suggestive of their functional roles as novel biomarkers for cancer therapy. The current study investigated the specific role of lncRNA TPTE pseudogene 1 (TPTEP1) in HCC.

METHODS

Expression of lncRNA TPTEP1, microRNA-454-3p (miR-454-3p) and discs large homolog 5 (DLG5) was determined in tissues samples from the recruited patients with HCC. Cell proliferation, migration and invasion assays were performed to determine effects of lncRNA TPTEP1, miR-454-3p and DLG5 on the malignant phenotype of tumor cells. Finally, the mouse HCC model was also established to disclose the tumor suppressor effects of lncRNA TPTEP1 in vivo.

RESULTS

LncRNA TPTEP1 was downregulated both in HCC cells and tissues, and played a negative regulatory role in HCC cell proliferation, migration and invasion. Mechanistically, lncRNA TPTEP1 competitively bound to miR-454-3p, thereby upregulating its endogenous target DLG5. Moreover, lncRNA TPTEP1 hindered activation of the protein kinase B signaling pathway, causing inhibited malignant phenotypes of HCC cells. Also, lncRNA TPTEP1 suppressed tumor growth and extrahepatic metastasis (lung) via miR-454-3p/DLG5 axis.

CONCLUSION

Taken together, this research revealed a concrete mechanism of lncRNA TPTEP1 in HCC.

Regional Variation in Laparoscopy Use for Elective Colon Cancer Treatment in Canada: The Importance of Fellowship Training Sites

BACKGROUND

Over the last decade, use of laparoscopy for the treatment of colon cancer has been variable despite evidence of benefit, possibly reflecting surgeon expertise rather than other factors.

OBJECTIVE

The purpose of this study was to examine the spatial variation in the use of laparoscopy for colon cancer surgery and to determine what factors may influence use.

DESIGN

This was a population-based retrospective analysis from April 2008 to March 2015.

SETTINGS

All Canadian provinces (excluding Quebec) were included.

PATIENTS

The study included all patients ≥18 years of age undergoing elective colectomy for colon cancer.

MAIN OUTCOME MEASURES

The primary outcome was laparoscopy use rates. Predictors of use included patient and disease characteristics, year of surgery, rurality, hospital and surgeon volumes, and distance from a colorectal fellowship training center.

RESULTS

A total of 34,725 patients were identified, and 42% underwent laparoscopic surgery. Significant spatial variations in laparoscopy use were identified, with 95% of high-use clusters located ≤100 km and 98% of low-use clusters located >100 km from a colorectal fellowship center. There were no high-use clusters located around large academic centers without colorectal fellowships. At the individual level, patients living within 25 km and 26 to 100 km of a fellowship center were 2.6 and 1.6 times more likely to undergo laparoscopic surgery compared with those >100 km away (95% CI, 2.47-2.79, p < 0.00; 95% CI, 1.53-1.71, p < 0.001). Surgeon and hospital volumes were associated with increased rates of laparoscopy use (p < 0.001).

LIMITATIONS

Data were obtained from an administrative database, and despite 85% to 95% published validity, they remain subject to misclassification, response, and measurement bias.

CONCLUSIONS

Significant spatial variations in the use of laparoscopy for colon cancer surgery exist. After adjusting for patient and system factors, proximity to a colorectal fellowship training center remained a strong predictor of laparoscopy use. There remain regional variations in colon cancer treatment, with discrepancies in the surgical care offered to Canadian patients based solely on location. See Video Abstract at http://links.lww.com/DCR/B595.

VARIACIN REGIONAL EN EL USO DE LAPAROSCOPIA PARA EL TRATAMIENTO ELECTIVO DEL CNCER DE COLON EN CANAD LA IMPORTANCIA DE LOS SITIOS DE CAPACITACIN PARA RESIDENTES

ANTECEDENTES:Durante la última década, la utilización de la laparoscopia para el tratamiento del cáncer de colon ha sido variable a pesar de la evidencia de beneficio; posiblemente reflejando la experiencia del cirujano, más que otros factores.OBJETIVO:Examinar la variación espacial en el uso de la laparoscopia para la cirugía del cáncer de colon y determinar qué factores pueden influir en la utilización.DISEÑO:Análisis retrospectivo poblacional de abril de 2008 a marzo de 2015.ENTORNO CLÍNICO:Todas las provincias canadienses (excepto Quebec).PACIENTES:Todos los pacientes> 18 años sometidos a colectomía electiva por cáncer de colon.PRINCIPALES MEDIDAS DE RESULTADO:El principal resultado fueron las tasas de utilización de laparoscopia. Los predictores de uso incluyeron las características del paciente y la enfermedad, el año de la cirugía, la ruralidad, los volúmenes de hospitales y cirujanos, y la distancia a un centro de formación de residentes colorectales.RESULTADOS:Se identificaron 34.725 pacientes, 42% fueron sometidos a cirugía laparoscópica. Se identificaron variaciones espaciales significativas en el uso de laparoscopia, con el 95% de los conglomerados de alto uso ubicados a <100 km y el 98% de los conglomerados de bajo uso ubicados a> 100 km, desde un centro de residencia colorectal. No había grupos de alto uso ubicados alrededor de grandes centros académicos sin residentes colorrectales. A nivel individual, los pacientes que vivían dentro de los 25 km y 26-100 km de un centro de residentes tenían 2,6 y 1,6 veces más probabilidades de someterse a una cirugía laparoscópica, respectivamente, en comparación con aquellos a> 100 km de distancia (95% CI 2,47-2,79, p <0,00; IC del 95% 1,53-1,71, p <0,001). Los volúmenes de cirujanos y hospitales se asociaron con mayores tasas de utilización de laparoscopia (p <0,001).LIMITACIONES:Los datos se obtuvieron de una base de datos administrativa y, a pesar de una validez publicada del 85-95%, siguen sujetos a errores de clasificación, respuesta y sesgo de medición.CONCLUSIONES:Existen variaciones espaciales significativas en el uso de la laparoscopia para la cirugía del cáncer de colon. Después de ajustar por factores del paciente y del sistema, la proximidad a un centro de formación de residentes colorectales siguió siendo un fuerte predictor del uso de laparoscopia. Sigue habiendo variaciones regionales en el tratamiento del cáncer de colon, con discrepancias en la atención quirúrgica ofrecida a los pacientes canadienses basadas únicamente en la ubicación. Consulte Video Resumen en http://links.lww.com/DCR/B595.

The accumulation of ERAS (enhanced recovery after surgery) components reduces post-colectomy length of stay at small and low volume hospitals

In small hospitals, where the majority of colectomy surgery is performed in the United States, adopting more individual ERAS components improves outcomes. The accumulation of individual ERAS components influences outcome more than an "ERAS designation" and this can be used by small hospitals to improve outcomes.

Treatment and Survival Disparities of Colon Cancer in the Texas-Mexico Border Population: Cancer Disparities in Border Population

BACKGROUND

Previous studies have reported healthcare disparities in the Texas-Mexico border population. Our aim was to evaluate treatment utilization and oncologic outcomes of colon cancer patients in this vulnerable population.

METHODS

Patients with localized and regional colon cancer (CC) were identified in the Texas Cancer Registry (1995-2016). Clinicopathological data, hospital factors, receipt of optimal treatment, and overall survival (OS) were compared between Texas-Mexico Border (TMB) and the Non-Texas-Mexico Border (NTMB) cohorts. Multivariable analysis was performed to identify risk factors associated with decreased survival.

RESULTS

We identified 43,557 patients with localized/regional CC (9% TMB and 91% NTMB). TMB patients were more likely to be Hispanic (73% versus 13%), less likely to have private insurance (13% versus 21%), were more often treated at safety net hospitals (82% versus 22%) and less likely at ACS-CoC accredited hospitals (32% versus 57%). TMB patients were more likely to receive suboptimal treatment (21% versus 16%) and had a lower median OS for localized (8.58 versus 9.58 y) and regional colon cancer (5.75 versus 6.18 y, all P < 0.001). In multivariable analysis, TMB status was not associated with worse OS. Factors associated with worse survival included receipt of suboptimal treatment, Medicare/insured status, and treatment in safety net and non-accredited ACS-CoC hospitals (all P < 0.001) CONCLUSIONS: While TMB CC patients had worse OS, TMB status itself was not found to be a risk factor for decreased survival. This survival disparity is likely associated with higher rate of suboptimal treatment, Medicare/Uninsured status, and decreased access to ACS-CoC accredited hospitals.

Residential history in cancer research: Utility of the annual billing ZIP code in the SEER-Medicare database and mobility among older women with breast cancer in the United States

There is a rise in attention to residential history in cancer epidemiology aimed at more effective estimation of social and physical environmental exposures and the influence of place of residence on cancer outcomes. However, in the United States, as in many other countries, residential history data are not readily available. In this paper we explore the feasibility of using the annual Medicare billing ZIP code history available in the SEER-Medicare database to study residential mobility among older cancer survivors in the U.S. In a cohort of women diagnosed with breast cancer between 2007 and 2015, we examine the completeness of the data along with the overall characteristics of residential moves based on race and stage at diagnosis. Findings indicate that residential mobility among older women with breast cancer in the U.S. is limited, but differences by race/ethnicity, stage at diagnosis and before/after diagnosis are statistically significant. And breast cancer survivors from minority groups move more frequently than their non-Hispanic White counterparts. The results also show that move rate slightly, but statistically significantly, increases after diagnosis. We conclude that SEER-Medicare can be utilized to study residential mobility among older cancer survivors. We recommend the creation of sub-cohorts based on specific research questions to account for variability in residential mobility due to very short survival times or a diagnosis shortly after Medicare enrollment. Studying residential history provides the opportunity for assigning socioecological and exposure metrics for future survival studies.

Differences in effectiveness and use of laparoscopic surgery in locally advanced colon cancer patients

Patients with locally advanced colon cancer have worse outcomes. Guidelines of various organizations are conflicting about the use of laparoscopic colectomy (LC) in locally advanced colon cancer. We determined whether patient outcomes of LC and open colectomy (OC) for locally advanced (T4) colon cancer are comparable in all colon cancer patients, T4a versus T4b patients, obese versus non-obese patients, and tumors located in the ascending, descending, and transverse colon. We used data from the 2013–2015 American College of Surgeons’ National Surgical Quality Improvement Program. Patients were diagnosed with nonmetastatic pT4 colon cancer, with or without obstruction, and underwent LC (n = 563) or OC (n = 807). We used a composite outcome score (mortality, readmission, re-operation, wound infection, bleeding transfusion, and prolonged postoperative ileus); length of stay; and length of operation. Patients undergoing LC exhibited a composite outcome score that was 9.5% lower (95% CI − 15.4; − 3.5) versus those undergoing OC. LC patients experienced a 11.3% reduction in postoperative ileus (95% CI − 16.0; − 6.5) and an average of 2 days shorter length of stay (95% CI − 2.9; − 1.0). Patients undergoing LC were in the operating room an average of 13.5 min longer (95% CI 1.5; 25.6). We found no evidence for treatment heterogeneity across subgroups (p > 0.05). Patients with locally advanced colon cancer who receive LC had better overall outcomes and shorter lengths of stay compared with OC patients. LC was equally effective in obese/nonobese patients, in T4a/T4b patients, and regardless of the location of the tumor.

A Paradigm Shift in Physician Reimbursement: A Model to Align Reimbursement to Value in Laparoscopic Colorectal Surgery in the United States

BACKGROUND

Despite common beliefs, underuse of laparoscopic colorectal surgery remains an issue. A paradigm shift to increase laparoscopy and align payment with effort is needed, with pressures to improve value.

OBJECTIVE

The purpose of this study was to compare reimbursement across surgical approach and payer for common colorectal procedures and to propose a novel way to increase use in the United States.

DATA SOURCES

Centers for Medicare & Medicaid Services (Medicare) reimbursement and commercial claims data from 2012 to 2015 were used.

STUDY SELECTION

Reimbursement across payers was mapped for the 10 most common colorectal procedures using the open and laparoscopic approaches.

MAIN OUTCOME MEASURES

The reimbursement difference across approaches by payer and potential value proposition from a cost-shifting model increasing reimbursement with corresponding increases in laparoscopic use was measured.

RESULTS

For Medicare, reimbursement was lower laparoscopically than open for the majority. With commercial, laparoscopy was reimbursed less for 3 procedures. When laparoscopic reimbursement was higher, the amount was not substantial. Medicare payments were consistently lower than commercial, with corresponding lower reimbursement for laparoscopy. Increasing reimbursement by 10%, 20%, and 30% resulted in significant cost savings with laparoscopy. Savings were amplified with increasing use, with additional savings over baseline at all levels, except 30% reimbursement/10% increased use.

LIMITATIONS

The study was limited by the use of claims data, which could have coding errors and confounding in the case mix across approaches.

CONCLUSIONS

Reimbursement for laparoscopic colorectal surgery is comparatively lower than open. Reimbursement can be increased with significant overall cost savings, as the reimbursement/case is still less than total cost savings with laparoscopy compared with open cases. Incentivizing surgeons toward laparoscopy could drive use and improve outcomes, cost, and quality as we shift to value-based payment. See Video Abstract at http://links.lww.com/DCR/B290. CAMBIOS EN LOS PARADIGMAS DE REEMBOLSOS MÉDICOS: UN MODELO PARA ALINEAR EL REEMBOLSO AL VALOR REAL DE LA CIRUGÍA COLORRECTAL LAPAROSCÓPICA EN LOS ESTADOS UNIDOS: A pesar de las creencias comunes, la subutilización de la cirugía colorrectal laparoscópica sigue siendo un problema. Se necesita un cambio en los paradigmas para aumentar y alinear el rembolso de la laparoscopia aplicando mucho esfuerzo para obtener una mejoría en su valor real.Comparar los reembolsos del abordaje quirúrgico y los de la administración para procedimientos colorrectales comunes y proponer una nueva forma de aumentar su uso en los Estados Unidos.Reembolsos en los Centros de Servicios de Medicare y Medicaid (Medicare) y los datos de reclamos comerciales encontrados de 2012-2015.El reembolso administrativo se mapeó para los diez procedimientos colorrectales más comunes utilizando los enfoques abiertos y laparoscópicos.Diferencias de reembolso entre los enfoques por parte de la administración y la propuesta de valor real de un modelo de cambio de costos que aumentan el reembolso con los aumentos correspondientes si se utiliza la laparoscopía.Para Medicare, el reembolso fue menor para una mayoría por vía laparoscópica que abierta. Comercialmente, la laparoscopia se reembolsó menos por 3 procedimientos. Cuando el reembolso laparoscópico fue mayor, la cantidad no fue sustancial. Los pagos de Medicare fueron consistentemente más bajos que los pagos comerciales, con el correspondiente reembolso más bajo por laparoscopia. El aumento del reembolso en un 10%, 20% y 30% resultó en ahorros de costos significativos con la laparoscopía. Los ahorros se amplificaron con el aumento de la utilización, con ahorros adicionales sobre la línea de base en todos los niveles, excepto el 30% de reembolso / 10% de mayor uso.Uso de datos de reclamos, que podrían tener errores de codificación y confusión en la combinación de casos entre enfoques.El reembolso por la cirugía colorrectal laparoscópica es comparativamente más bajo que el abordaje abierto. El reembolso se puede aumentar con ahorros significativos en los costos generales, ya que el reembolso / caso es aún menor que el ahorro total en los costos de la laparoscopia en comparación con los casos abiertos. Incentivar a los cirujanos hacia la laparoscopía podría impulsar la utilización y mejorar los resultados, el costo y la calidad a medida que se pasa al pago basado en el valor real. Consulte Video Resumen en http://links.lww.com/DCR/B290. (Traducción-Dr Xavier Delgadillo).

Cross-classified multilevel models (CCMM) in health research: A systematic review of published empirical studies and recommendations for best practices

Recognizing that health outcomes are influenced by and occur within multiple social and physical contexts, researchers have used multilevel modeling techniques for decades to analyze hierarchical or nested data. Cross-Classified Multilevel Models (CCMM) are a statistical technique proposed in the 1990s that extend standard multilevel modeling and enable the simultaneous analysis of non-nested multilevel data. Though use of CCMM in empirical health studies has become increasingly popular, there has not yet been a review summarizing how CCMM are used in the health literature. To address this gap, we performed a scoping review of empirical health studies using CCMM to: (a) evaluate the extent to which this statistical approach has been adopted; (b) assess the rationale and procedures for using CCMM; and (c) provide concrete recommendations for the future use of CCMM. We identified 118 CCMM papers published in English-language literature between 1994 and 2018. Our results reveal a steady growth in empirical health studies using CCMM to address a wide variety of health outcomes in clustered non-hierarchical data. Health researchers use CCMM primarily for five reasons: (1) to statistically account for non-independence in clustered data structures; out of substantive interest in the variance explained by (2) concurrent contexts, (3) contexts over time, and (4) age-period-cohort effects; and (5) to apply CCMM alongside other techniques within a joint model. We conclude by proposing a set of recommendations for use of CCMM with the aim of improved clarity and standardization of reporting in future research using this statistical approach.

Long-Term Outcomes of Laparoscopic Versus Open Surgery for Colon Cancer in Noncancer-Specific Hospital: Propensity Score Analysis

Background: Noninferiority of the laparoscopic approach compared with open surgery for colon cancer treatment has remained controversial. In this study, we aimed to evaluate the long-term outcomes of laparoscopic surgery (LS) versus open surgery (OPS). Methods: A total of 418 patients with Stage I-III colon cancer, who received radical surgery at the Tokyo Medical University Hospital from 2000 to 2014 were included. Propensity score analysis with overall survival (OS) and relapse-free survival (RFS) as the primary endpoints was performed retrospectively to reduce the effects of confounding factors between groups, including age, sex, body mass index, tumor size, clinical T stage, and clinical N stage. Results: After case matching, the 5-year OS rate was 87.8% in the OPS group (n = 97) and 90.1% in the LS group (n = 97; P = .59), indicating no significant difference. The 5-year RFS rate was 79.0% in the OPS group (n = 97) and 84.1% in the LS group (n = 97; P = .29), indicating no significant difference. Five-year cumulative local recurrence (LR) rates were 7.6% and 0% in the OPS group and the LS group, respectively, indicating a significant difference (P = .007). Five-year cumulative distant metastasis rates were 9.2% and 12.7% in the OPS group and the LS group, respectively (P = .49). Conclusion: Laparoscopic surgery appears to be a reasonable option with similar long-term outcomes and to have low LR rate to open surgery in colon cancer patients.

Histamine receptors and cancer pharmacology: an update

In the present review, we will discuss the recent advances in the understanding of the role of histamine and histamine receptors in cancer biology. The controversial role of the histaminergic system in different neoplasias including gastric, colorectal, oesophageal, oral, pancreatic, liver, lung, skin, blood and breast cancers will be reviewed. The expression of histamine receptor subtypes, with special emphasis on the histamine H4 receptor, in different cell lines and human tumours, the signal transduction pathways and the associated biological responses as well as the in vivo treatment of experimental tumours with pharmacological ligands will be described. The presented evidence demonstrates that histamine regulates cancer-associated biological processes during cancer development in multiple cell types, including neoplastic cells and cells in the tumour micro-environment. The outcome will depend on tumour cell type, the level of expression of histamine receptors, signal transduction associated with these receptors, tumour micro-environment and histamine metabolism, reinforcing the complexity of cancer disease. Findings show the pivotal role of H4 receptors in the development and progression of many types of cancers, and considering its immunomodulatory properties, the H4 receptor appears to be the most promising molecular therapeutic target for cancer treatment within the histamine receptor family. Furthermore, the H4 receptor is differentially expressed in tumours compared with normal tissues, and in most cancer types in which data are available, H4 receptor expression is associated with clinicopathological characteristics, suggesting that H4 receptors might represent a novel cancer biomarker. LINKED ARTICLES: This article is part of a themed section on New Uses for 21st Century. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.3/issuetoc.

Association of laparoscopic colectomy versus open colectomy on the long-term health-related quality of life of colon cancer survivors

Background

Laparoscopic colectomy (LC) is a less invasive alternative to open colectomy (OC) in the treatment of stage I–III colon cancer. Research on the long-term (5-year post-diagnosis) health-related quality of life (HRQOL) of LC patients is scarce. Our study aimed to compare the long-term HRQOL and psychological well-being of stage I–III colon cancer survivors treated either with LC or OC.

Methods

This study used a German population-based cohort of patients treated with either LC (n = 86) or OC (n = 980). LC patients were matched to OC patients using a propensity score. At 5-year follow-up, patients completed assessments on HRQOL (EORTC QLQ-C30 and EORTC QLQ-CR29) and psychological well-being (distress and disease/treatment burden). Least square mean scores of HRQOL were derived using linear regression. Proportions of patients with moderate/high distress and disease/treatment burden were compared with Chi-square tests.

Results

In total, 81 LC patients were matched to 156 OC patients. Generally, LC patients had HRQOL comparable to OC patients, albeit LC patients reported significantly better body image (87.1 versus 81.0, p = 0.03). Distress levels were generally low and comparable between the two groups, even though LC patients were more likely to experience disease recurrence (16% versus 7%, p = 0.02) than OC patients. OC patients were more likely to feel moderate/high levels of burden associated with the treatment (72% versus 56%, p = 0.01) and the time after treatment completion (43% versus 28%, p = 0.02).

Conclusion

LC patients reported comparable long-term HRQOL outcomes but higher levels of psychological well-being than OC patients 5 years after diagnosis, even though LC was associated with higher risk of disease recurrence.

Is metastasectomy a worthy option?-the role of surgery in metastatic colon cancer to liver and lungs

Background

The role of surgery and metastasectomy is controversial in the treatment of stage IV colon cancer (CC). The aim of this study was to investigate the relationship between primary tumor resection (PTR) with metastasectomy and survival in patients diagnosed with metastatic CC.

Methods

The National Cancer Data Base (NCDB) was retrospectively queried for patients diagnosed with colon adenocarcinoma from 2004 to 2013. Patient demographics, clinical characteristics, and short-term outcomes were collected. Groups were generated based on if surgery was performed and, if so, was metastasectomy involved. Associations between groups were evaluated using Kruskal-Wallis and Pearson Chi-square tests. Overall survival (OS) was summarized using standard Kaplan-Meier methods. The association between surgical group and OS was evaluated using the log-rank test.

Results

Of 31,172 patients, 13,214 (42.4%) had surgery while 17,958 (57.6%) did not. Among these, 81.3% of patients had liver metastases only, while 18.7% of patients had both liver and lung metastases. Median OS was 15.1 months (95% CI: 14.8 to 15.5 months) for the entire cohort. However, median OS was significantly better for those who had surgery (either PTR alone or PTR with metastasectomy) compared to those who did not (21.8 vs. 7.5 months, P<0.001). Patients who received PTR with metastasectomy had worse median OS (20.5 vs. 21.8 months, P=0.035) compared to those who only received PTR (P=0.211).

Conclusions

PTR in select patients diagnosed with metastatic CC provides a remarkable improvement to survival rate. The role of metastasectomy remains controversial as no difference in survival outcomes exists between patients who received it and who did not.

Multilevel analysis in rural cancer control: A conceptual framework and methodological implications

Rural populations experience a myriad of cancer disparities ranging from lower screening rates to higher cancer mortality rates. These disparities are due in part to individual-level characteristics like age and insurance status, but the physical and social context of rural residence also plays a role. Our objective was two-fold: 1) to develop a multilevel conceptual framework describing how rural residence and relevant micro, macro, and supra-macro factors can be considered in evaluating disparities across the cancer control continuum and 2) to outline the unique considerations of multilevel statistical modeling in rural cancer research. We drew upon several formative frameworks that address the cancer control continuum, population-level disparities, access to health care services, and social inequities. Micro-level factors comprised individual-level characteristics that either predispose or enable individuals to utilize health care services or that may affect their cancer risk. Macro-level factors included social context (e.g. domains of social inequity) and physical context (e.g. access to care). Rural-urban status was considered a macro-level construct spanning both social and physical context, as "rural" is often characterized by sociodemographic characteristics and distance to health care services. Supra-macro-level factors included policies and systems (e.g. public health policies) that may affect cancer disparities. Our conceptual framework can guide researchers in conceptualizing multilevel statistical models to evaluate the independent contributions of rural-urban status on cancer while accounting for important micro, macro, and supra-macro factors. Statistically, potential collinearity of multilevel model predictive variables, model structure, and spatial dependence should also be considered.

Silencing of LINC01116 suppresses the development of oral squamous cell carcinoma by up-regulating microRNA-136 to inhibit FN1

Background

Oral squamous cell carcinoma (OSCC), one of the most common cancers worldwide with a high mortality rate, is accompanied by poor prognosis, highlighting the significance of early diagnosis and effective treatment. Long non-coding RNAs (lncRNAs) have been linked with the development and progression of various cancers. In this study, aberrantly expressed lncRNA LINC01116, microRNA-136 (miR-136), and fibronectin1 (FN1) were identified in OSCC using a microarray analysis. Therefore, this study aimed to investigate the role of LINC01116/miR-136/FN1 regulatory axis in OSCC.

Methods

The gain-of-function and loss-of-function experiments in vitro were performed to alter the expression of LINC01116 and miR-136 in OSCC cells to elucidate their effects on cellular processes, including epithelial-mesenchymal transition (EMT), viability, invasion, and migration. In addition, the interaction among LINC01116, miR-136, and FN1 was identified. Additionally, the tumorigenicity and lymph node metastasis (LNM) affected by LINC01116 were observed through xenograft tumor in nude mice.

Results

LINC01116 and FN1 were abundant in both OSCC tissues and cells, while miR-136 was poorly expressed. LINC01116 could competitively bind to miR-136, which targets and negatively regulates FN1. Moreover, in response to LINC01116 silencing or miR-136 over-expression, OSCC cells exhibited diminished EMT process and inhibited cell viability, invasion, and migration in vitro, coupling with impaired tumorigenicity and LNM in vivo.

Conclusion

The fundamental findings in this study collectively demonstrate that LINC01116 silencing may inhibit the progression of OSCC via the miR-136-mediated FN1 inhibition, highlighting a promising therapeutic strategy for OSCC treatment.

Pathophysiological Role of Histamine H4 Receptor in Cancer: Therapeutic Implications

Cancer is a leading cause of death in both developed and developing countries. Although advances in cancer research lead to improved anti-neoplastic therapies, they continue to have unfavorable outcomes, including poor response and severe toxicity. Thus, the challenge for the new therapeutic approaches is to increase anti-tumor efficacy by targeting different molecules encompassed in the tumor and its microenvironment, as well as their specific interactions. The histamine H4 receptor (H4R) is the last discovered histamine receptor subtype and it modulates important immune functions in innate and in adaptive immune responses. Several ligands have been developed and some of them are being used in clinical trials for immune disorders with promising results. When searched in The Cancer Genome Atlas (TCGA) database, human H4R gene was found to be expressed in bladder cancer, kidney cancer, breast cancer, gastrointestinal cancers, lung cancer, endometrial cancer, and skin cancer. In the present work, we aimed to briefly summarize current knowledge in H4R's pharmacology and in the clinical use of H4R ligands before focusing on recent data reporting the expression of H4R and its pathophysiological role in cancer, representing a potential molecular target for cancer therapeutics. H4R gene and protein expression in different types of cancers compared with normal tissue as well as its relationship with patient prognosis in terms of survival will be described.

Trends in the Use of Laparoscopy and Robotics for Colorectal Cancer in Florida

Background: Laparoscopy and more recently robotics are increasingly used for colorectal cancer surgery in the United States. We examined the current trends of minimally invasive surgical resections for colorectal cancer in Florida. Methods: The Florida Inpatient Discharge Dataset was used to examine the clinical data of patients who underwent elective surgery for colorectal cancer during 2013-2015. Multivariate analyses were performed to compare patient characteristics associated with the use of open and minimally invasive surgeries. Results: A total of 10,513 patients were analyzed; 5451 (52%) had open surgery, 4403 (42%) laparoscopy, and 659 (6%) robotic surgery. The rates of minimally invasive surgery (MIS) increased from 46.95% in 2013 to 48.72% in 2015. Among minimally invasive surgical procedures, the use of robotics increased from 9.82% in 2013 to 15.48% in 2015. Metastatic cancer (odds ratio [OR] 0.61, confidence interval [CI] 0.55-0.67), Elixhauser score of 3-5 (OR 0.85, CI 0.76-0.95) or more than 5 (OR 0.78, CI 0.63-0.97), Medicaid insurance (OR 0.73, CI 0.6-0.89), Black race (OR 0.88, CI 0.77-0.99), and rural residence (OR 0.83, CI 0.69-0.99) were associated with lower odds of MIS than open surgery. Conclusions: This study demonstrates that the overall rates of MIS for colorectal cancer in Florida increased from 2013 to 2015. Socially deprived and very sick patient populations with colorectal cancer are less likely to undergo MIS.

Disparities in minimally invasive surgery for colorectal cancer in Florida

BACKGROUND

The cost of minimally invasive surgery (MIS) raises potential for racial and social disparities. The aim of this study was to identify the racial, socioeconomic and geographic disparities associated with MIS for colorectal cancer (CRC) in Florida.

METHODS

Using the Florida Inpatient Discharge Dataset, we examined the clinical data of patients who underwent elective resections for CRC during 2013-2015. Multivariable analysis was performed to identify differences in gender, age, race, urbanization, region, insurance and clinical characteristics associated with the surgical approach.

RESULTS

Of the 10,224 patients identified, 5308 (52%) had open surgery and 4916 (48%) had MIS. Females (p = 0.012), Medicare-insured patients (p = 0.001) and residents of South Florida were more likely to undergo MIS. Patients with Medicaid (p = 0.008), metastasis (p < 0.001) or 3-5 comorbidities (p = 0.004) had reduced likelihood of MIS. Hispanic patients in Southwest Florida had reduced likelihood of receiving MIS than whites (p < 0.017). Patients who underwent MIS had significantly reduced LOS (p < 0.001).

CONCLUSIONS

Consistent with national studies, MIS for CRC in Florida is associated with insurance status and geographic location. There are patient-level regional differences for racial disparities in MIS for CRC in Florida.

A review of cancer outcomes among persons dually enrolled in Medicare and Medicaid

The fragmentation and lack of coordination of health care may result in less efficient and more costly care and lead to poorer outcomes. There has been increasing interest in examining cancer outcomes among persons who are dually enrolled in Medicare and Medicaid. Previous studies have identified disparities in the quality of cancer treatment according to race, ethnicity, socioeconomic status, and source of health insurance. This article, which is based upon bibliographic searches in PubMed, reviews the literature on dual enrollment in Medicare and Medicaid and cancer survival and quality of cancer treatment. A total of 65 articles were identified. Of the 65 articles that were screened using the full texts or abstracts, 13 studies met the eligibility criteria, one cross-sectional study and 12 cohort studies. The results of this systematic review indicate that there is only limited evidence that dual enrollment in Medicare and Medicaid is associated with poorer survival or quality of cancer care. The number of studies that have looked for associations between dual Medicare-Medicaid status and survival and quality of cancer treatment is still small. Outcomes and cancer site(s) varied among the studies. Additional studies are needed to determine the replicability of findings reported to date. Of particular interest are studies of major forms of cancer (breast, prostate, lung, colorectal) that include adequate numbers of patients described by insurance status, race, comorbidity, stage, receipt of appropriate cancer therapy, and survival.