Are local public expenditure reductions associated with increases in inequality in emergency hospitalisation? Time-series analysis of English local authorities from 2010 to 2017.

BACKGROUND: Reductions in local government funding implemented in 2010 due to austerity policies have been associated with worsening socioeconomic inequalities in mortality. Less is known about the relationship of these reductions with healthcare inequalities; therefore, we investigated whether areas with greater reductions in local government funding had greater increases in socioeconomic inequalities in emergency admissions. METHODS: We examined inequalities between English local authority districts (LADs) using a fixed-effects linear regression to estimate the association between LAD expenditure reductions, their level of deprivation using the Index of Multiple Deprivation (IMD) and average rates of (all and avoidable) emergency admissions for the years 2010-2017. We also examined changes in inequalities in emergency admissions using the Absolute Gradient Index (AGI), which is the modelled gap between the most and least deprived neighbourhoods in an area. RESULTS: LADs within the most deprived IMD quintile had larger pounds per capita expenditure reductions, higher rates of all and avoidable emergency admissions, and greater between-neighbourhood inequalities in admissions. However, expenditure reductions were only associated with increasing average rates of all and avoidable emergency admissions and inequalities between neighbourhoods in local authorities in England's three least deprived IMD quintiles. For a LAD in the least deprived IMD quintile, a yearly reduction of £100 per capita in total expenditure was associated with a yearly increase of 47 (95% CI 22 to 73) avoidable admissions, 142 (95% CI 70 to 213) all-cause emergency admissions and a yearly increase in inequalities between neighbourhoods of 48 (95% CI 14 to 81) avoidable and 140 (95% CI 60 to 220) all-cause emergency admissions. In 2017, a LAD average population was ~170 000. CONCLUSION: Austerity policies implemented in 2010 impacted less deprived local authorities, where emergency admissions and inequalities between neighbourhoods increased, while in the most deprived areas, emergency admissions were unchanged, remaining high and persistent.

Differential Utilization of Parental Presence and Premedication for Induction of Anesthesia in Pediatric Patients.

PURPOSE: Known disparities exist in pain treatment between African American, Latino, and White children. A recent study described 'adultification' of Black children, with Black children being less likely to have a parent present at induction of anesthesia and less likely to receive an anxiolytic premedication before proceeding to the operating room. The aim of this study is to identify differences based on race and socioeconomic status when treating children and their families for anesthetic induction. We hypothesize that differences exist such that certain populations are less likely to receive sedative premedication and less likely to have parents present at induction of anesthesia. DESIGN: This was a retrospective cohort study. METHODS: Demographic data were obtained along with type of surgical procedure, type of anesthesia induction, use of premedication, and involvement of child life services (including the plan for parental presence at induction) for all pediatric patients presenting for anesthetics from February 2019 to March 2020. Statistical analysis consisted of fitting logistic mixed effects models for caregiver presence or for midazolam use during induction, with fixed effects for sex, race, ethnicity, language, public/private insurance, and anesthetic risk, and with the provider as a random effect. FINDINGS: A total of 7,753 patients were included in our statistical analyses, and parental presence focused on 4,102 patients with documentation from child life specialists. Females were less likely than males to have parents present at induction (odds ratio [OR] 0.77, confidence interval [CI] [0.67, 0.89]). When looking at race, American Indian/Alaskan Native patients (OR 0.23 [CI 0.093, 0.47]) and Black/African American patients OR 0.64 [CI 0.47, 0.89]) were less likely to have a parent present induction than White patients. Patients with private insurance were more likely to have parents present than patients with public insurance (OR 0.63 CI [0.5, 0.78]). These findings held true in age-separated sensitivity analysis. Asian patients were less likely to receive midazolam premedication (OR 0.65 CI [0.49, 0.86]). CONCLUSIONS: This study supports previous work showing differential use of parental presence at induction based on race. Additionally, it also shows different treatment based on sex and public insurance status, a surrogate for socioeconomic status.

Immunogenicity, safety, and reactogenicity of heterologous COVID-19 primary vaccination incorporating mRNA, viral-vector, and protein-adjuvant vaccines in the UK (Com-COV2): a single-blind, randomised, phase 2, non-inferiority trial.

BACKGROUND: Given the importance of flexible use of different COVID-19 vaccines within the same schedule to facilitate rapid deployment, we studied mixed priming schedules incorporating an adenoviral-vectored vaccine (ChAdOx1 nCoV-19 [ChAd], AstraZeneca), two mRNA vaccines (BNT162b2 [BNT], Pfizer-BioNTech, and mRNA-1273 [m1273], Moderna) and a nanoparticle vaccine containing SARS-CoV-2 spike glycoprotein and Matrix-M adjuvant (NVX-CoV2373 [NVX], Novavax). METHODS: Com-COV2 is a single-blind, randomised, non-inferiority trial in which adults aged 50 years and older, previously immunised with a single dose of ChAd or BNT in the community, were randomly assigned (in random blocks of three and six) within these cohorts in a 1:1:1 ratio to receive a second dose intramuscularly (8-12 weeks after the first dose) with the homologous vaccine, m1273, or NVX. The primary endpoint was the geometric mean ratio (GMR) of serum SARS-CoV-2 anti-spike IgG concentrations measured by ELISA in heterologous versus homologous schedules at 28 days after the second dose, with a non-inferiority criterion of the GMR above 0·63 for the one-sided 98·75% CI. The primary analysis was on the per-protocol population, who were seronegative at baseline. Safety analyses were done for all participants who received a dose of study vaccine. The trial is registered with ISRCTN, number 27841311. FINDINGS: Between April 19 and May 14, 2021, 1072 participants were enrolled at a median of 9·4 weeks after receipt of a single dose of ChAd (n=540, 47% female) or BNT (n=532, 40% female). In ChAd-primed participants, geometric mean concentration (GMC) 28 days after a boost of SARS-CoV-2 anti-spike IgG in recipients of ChAd/m1273 (20 114 ELISA laboratory units [ELU]/mL [95% CI 18 160 to 22 279]) and ChAd/NVX (5597 ELU/mL [4756 to 6586]) was non-inferior to that of ChAd/ChAd recipients (1971 ELU/mL [1718 to 2262]) with a GMR of 10·2 (one-sided 98·75% CI 8·4 to ∞) for ChAd/m1273 and 2·8 (2·2 to ∞) for ChAd/NVX, compared with ChAd/ChAd. In BNT-primed participants, non-inferiority was shown for BNT/m1273 (GMC 22 978 ELU/mL [95% CI 20 597 to 25 636]) but not for BNT/NVX (8874 ELU/mL [7391 to 10 654]), compared with BNT/BNT (16 929 ELU/mL [15 025 to 19 075]) with a GMR of 1·3 (one-sided 98·75% CI 1·1 to ∞) for BNT/m1273 and 0·5 (0·4 to ∞) for BNT/NVX, compared with BNT/BNT; however, NVX still induced an 18-fold rise in GMC 28 days after vaccination. There were 15 serious adverse events, none considered related to immunisation. INTERPRETATION: Heterologous second dosing with m1273, but not NVX, increased transient systemic reactogenicity compared with homologous schedules. Multiple vaccines are appropriate to complete primary immunisation following priming with BNT or ChAd, facilitating rapid vaccine deployment globally and supporting recognition of such schedules for vaccine certification. FUNDING: UK Vaccine Task Force, Coalition for Epidemic Preparedness Innovations (CEPI), and National Institute for Health Research. NVX vaccine was supplied for use in the trial by Novavax.

Correlation consistent auxiliary basis sets in density fitting Hartree-Fock: The atoms sodium through argon revisited.

We present a series of auxiliary basis sets, for the elements Na to Ar, for use in density-fitted Hartree-Fock calculations with the correlation consistent cc-pV(n + d)Z orbital basis sets. Benchmarking on total molecular energies, reaction energies and the spectroscopic constants of the SO molecule demonstrate that the new sets address the deficiencies of using existing auxiliary sets in combination with these orbital basis sets. We also report auxiliary basis sets for Na and Mg matched to cc-pVnZ, along with recommendations for pairing auxiliary basis sets to the cc-pVnZ-F12 basis sets for Hartree-Fock calculations.

Regional Differences in Procedural Care of Hemorrhoid Management in Medicare Patients; Unwarranted Variation in Clinical Practice for a Medical-First Problem.

INTRODUCTION: Hemorrhoid disease is very common problem in the Medicare population. Prior work has shown significant variation in county-level practices of hemorrhoidectomy; however, regional variation of rubber band ligation (RBL) has yet to be assessed. This is important as many different practitioners from different specialties can perform this procedure repeatedly in an office-based setting. We aim to evaluate the variation of RBL and hemorrhoidectomy over a 7-y period. METHODS: Using Medicare part B claims data, we identified all beneficiaries >65 y seen for hemorrhoid disease between 2006 and 2013. Current Procedural Terminology (CPT) codes were used to identify all events for hemorrhoidectomy (46083, 46250, 46255, 46257, 46260, and 46261) or RBL (46221) by hospital referral region (HRR). We determined HRR-level rates of hemorrhoidectomy and RBL per 1000 beneficiaries adjusted for age, sex, and race. We calculated annual coefficients of variation (SD × 100/mean) for hemorrhoidectomy and RBL. RESULTS: 1.2 to 1.3 million fee-for-service Medicare beneficiaries were seen annually for evaluation of hemorrhoid disease. Mean-adjusted annual rates for hemorrhoidectomy by HRRs varied from 4.34 to 63.03 per 1000 beneficiaries. Mean-adjusted rates of RBL by HRRs varied from 7.06 to 163 per 1000 beneficiaries. Annual procedural coefficients of variation over the study period were 41-48 (high) for hemorrhoidectomy and 69-74 (very high) for RBL. CONCLUSIONS: While continued high variation exists for hemorrhoidectomy, there is very high variation for RBL between HRRs in treating hemorrhoid disease among Medicare beneficiaries. There are substantial Medicare expenditures in this high-volume population that are likely unwarranted.

BasisOpt: A Python package for quantum chemistry basis set optimization.

The accuracy and efficiency of molecular quantum chemical calculations depend critically on the basis set used. However, the development of novel basis sets is hindered because much of the literature relies on the use of opaque processes and tools that are not publicly available. We present here BasisOpt, a tool for the automated optimization of basis sets with an easy-to-use framework. It features an open and accessible workflow for basis set optimization that can be easily adapted to almost any quantum chemistry program, a standardized approach to testing basis sets, and visualization of both the optimized basis sets and the optimization process. We provide examples of usage in realistic basis set optimization scenarios where: (i) a density fitting basis set is optimized for He, Ne, and Ar; (ii) the exponents of the def2-SVP basis are re-optimized for a set of molecules rather than atoms; and (iii) a large, almost saturated basis of sp primitives is automatically reduced to (10s5p) while achieving the lowest energy for such a basis set composition.

Safety and immunogenicity of heterologous versus homologous prime-boost schedules with an adenoviral vectored and mRNA COVID-19 vaccine (Com-COV): a single-blind, randomised, non-inferiority trial.

BACKGROUND: Use of heterologous prime-boost COVID-19 vaccine schedules could facilitate mass COVID-19 immunisation. However, we have previously reported that heterologous schedules incorporating an adenoviral vectored vaccine (ChAdOx1 nCoV-19, AstraZeneca; hereafter referred to as ChAd) and an mRNA vaccine (BNT162b2, Pfizer-BioNTech; hereafter referred to as BNT) at a 4-week interval are more reactogenic than homologous schedules. Here, we report the safety and immunogenicity of heterologous schedules with the ChAd and BNT vaccines. METHODS: Com-COV is a participant-blinded, randomised, non-inferiority trial evaluating vaccine safety, reactogenicity, and immunogenicity. Adults aged 50 years and older with no or well controlled comorbidities and no previous SARS-CoV-2 infection by laboratory confirmation were eligible and were recruited at eight sites across the UK. The majority of eligible participants were enrolled into the general cohort (28-day or 84-day prime-boost intervals), who were randomly assigned (1:1:1:1:1:1:1:1) to receive ChAd/ChAd, ChAd/BNT, BNT/BNT, or BNT/ChAd, administered at either 28-day or 84-day prime-boost intervals. A small subset of eligible participants (n=100) were enrolled into an immunology cohort, who had additional blood tests to evaluate immune responses; these participants were randomly assigned (1:1:1:1) to the four schedules (28-day interval only). Participants were masked to the vaccine received but not to the prime-boost interval. The primary endpoint was the geometric mean ratio (GMR) of serum SARS-CoV-2 anti-spike IgG concentration (measured by ELISA) at 28 days after boost, when comparing ChAd/BNT with ChAd/ChAd, and BNT/ChAd with BNT/BNT. The heterologous schedules were considered non-inferior to the approved homologous schedules if the lower limit of the one-sided 97·5% CI of the GMR of these comparisons was greater than 0·63. The primary analysis was done in the per-protocol population, who were seronegative at baseline. Safety analyses were done among participants receiving at least one dose of a study vaccine. The trial is registered with ISRCTN, 69254139. FINDINGS: Between Feb 11 and Feb 26, 2021, 830 participants were enrolled and randomised, including 463 participants with a 28-day prime-boost interval, for whom results are reported here. The mean age of participants was 57·8 years (SD 4·7), with 212 (46%) female participants and 117 (25%) from ethnic minorities. At day 28 post boost, the geometric mean concentration of SARS-CoV-2 anti-spike IgG in ChAd/BNT recipients (12 906 ELU/mL) was non-inferior to that in ChAd/ChAd recipients (1392 ELU/mL), with a GMR of 9·2 (one-sided 97·5% CI 7·5 to ∞). In participants primed with BNT, we did not show non-inferiority of the heterologous schedule (BNT/ChAd, 7133 ELU/mL) against the homologous schedule (BNT/BNT, 14 080 ELU/mL), with a GMR of 0·51 (one-sided 97·5% CI 0·43 to ∞). Four serious adverse events occurred across all groups, none of which were considered to be related to immunisation. INTERPRETATION: Despite the BNT/ChAd regimen not meeting non-inferiority criteria, the SARS-CoV-2 anti-spike IgG concentrations of both heterologous schedules were higher than that of a licensed vaccine schedule (ChAd/ChAd) with proven efficacy against COVID-19 disease and hospitalisation. Along with the higher immunogenicity of ChAd/BNT compared with ChAD/ChAd, these data support flexibility in the use of heterologous prime-boost vaccination using ChAd and BNT COVID-19 vaccines. FUNDING: UK Vaccine Task Force and National Institute for Health Research.

Reducing New Ileostomy Readmissions in a Rural Health Care Setting: A Quality Improvement Initiative.

BACKGROUND: Readmission after ileostomy creation continues to be a major cause of morbidity with rates ranging from 15% to 30% due to dehydration and obstruction. Rural environments pose an added risk of readmission due to larger travel distances and lack of consistent home health services. OBJECTIVE: This study aimed to reduce ileostomy-related readmission rates in a rural academic medical center. DESIGN: This is a rapid cycle quality improvement study. SETTING: This single-center study was conducted in a rural academic medical center. PATIENTS: Colorectal surgery patients receiving a new ileostomy were included in this study. INTERVENTIONS: Improvement initiatives were identified through Plan-Do-Study-Act cycles (enhanced team continuity, standardized rehydration, nursing/staff education). MAIN OUTCOME MEASURES: Thirty-day readmission, average length of stay, and average time to readmission served as main outcome measures. RESULTS: Roughly equal rates of ileostomy were created in each time point, consistent with a tertiary care colorectal practice. The preimplementation readmission rate was 29%. Over the course of the entire quality improvement initiative, re-admission rates decreased by more than 50% (29% to 14%). PDSA cycle 1, which involved integrating a service-specific physician assistant to the team, allowed for greater continuity of care and had the most dramatic effect, decreasing rates by 27.5% (29% to 21%). Standardization of oral rehydration therapy and the implementation of a patient-directed intake/output sheet during PDSA cycle 2 resulted in further improvement in readmission rates (21% to 15%). Finally, implementation of nurse and physician assistant (PA)-driven patient education on fiber supplementation resulted in an additional yet nominal decrease in readmissions (15% to 14%). Latency to readmission also significantly increased throughout the study period. LIMITATIONS: This study was limited by its small sample size in a single-center study. CONCLUSION: Implementation of initiatives targeting enhanced team continuity, the standardization of rehydration therapies, and improved patient education decreased readmission rates in patients with new ileostomies. Rural centers, where outpatient resources are not as readily available or accessible, stand to benefit the most from these types of targeted interventions to decrease readmission rates. See Video Abstract at http://links.lww.com/DCR/B771. REDUCCIN EN LAS READMISIONES POR ILEOSTOMAS NE MEDIOS DE ATENCIN MDICA RURAL INICIATIVA DE MEJORA EN LA CALIDAD: ANTECEDENTES:La readmisión después de la creación de una ileostomía sigue siendo una de las principales causas de morbilidad con tasas que oscilan entre el 15% y el 30% debido a la deshidratación y la oclusión. Un entorno rurale presenta un riesgo adicional de readmisión debido a las mayores distancias de viaje y la falta de servicios de salud domiciliarios adecuados.OBJETIVO:Reducir las tasas de reingreso por ileostomía en un centro médico académico rural.DISEÑO:Estudio de mejoría de la calidad de ciclo rápido.AJUSTE:Estudio unicéntrico en una unidad de servicio médico académico rural.PACIENTES:Pacientes de cirugía colorrectal a quienes se les confeccionó una ileostomía.INTERVENCIONES:Iniciativas de mejoría identificadas a través de los ciclos Planificar-Hacer-Estudiar-Actuar (Continuidad del equipo mejorada, rehidratación estandarizada, educación de enfermería / personal).PRINCIPALES MEDIDAS DE RESULTADO:30 días de readmisión, duración media de la estadía hospitalaria, tiempo medio de reingreso.RESULTADOS:Se crearon tasas aproximadamente iguales de ileostomías un momento dado de tiempo, subsecuentes en la práctica colorrectal de atención terciaria. La tasa de readmisión previa a la implementación del estudio fue del 29%. En el transcurso de toda la iniciativa de mejoría en la calidad, las tasas de readmisión disminuyeron en más del 50% (29% a 14%). El ciclo 1 de PDSA, que implicó la integración en el equipo de un asistente médico específico, lo que permitió una mayor continuidad en la atención y tuvo el mayor efecto disminuyendo las tasas en un 27,5% (29% a 21%). La estandarización de una terapia de rehidratación oral y la implementación de una hoja de ingresos / perdidas dirigida al paciente durante el ciclo 2 de PDSA resultó en una mejoría adicional en las tasas de readmisión (21% a 15%). Finalmente, la implementación de la educación del paciente impulsada por enfermeras y AF sobre el consumo suplementario de dietas con fibra dio como resultado una disminución adicional, aunque nominal, de las readmisiones (15% a 14%). La latencia hasta la readmisión también aumentó significativamente durante el período de estudio.LIMITACIONES:Estudio de un solo centro con un muestreo de pequeño tamaño.CONCLUSIONES:La implementación de iniciativas dirigidas a mejorar la continuidad en el equipo, la estandarización de las terapias de rehidratación y la mejoría en la información de los pacientes disminuyeron las tasas de readmisión en todos aquellas personas con nuevas ileostomías. Los centros rurales, donde los recursos para pacientes ambulatorios no están tan fácilmente disponibles o accesibles, son los que más beneficiaron de este tipo de intervenciones específicas para reducir las tasas de readmisión. Consulte Video Resumen en http://links.lww.com/DCR/B771. (Traducción-Dr. Xavier Delgadillo).

Minimally Invasive Surgery Approach is Not Associated With Differences in Long-Term Bowel Function Patient-Reported Outcomes After Elective Sigmoid Colectomy.

BACKGROUND: Postoperative bowel function is a common concern for patients undergoing a sigmoidectomy. We have previously demonstrated that patients with symptomatic bowel function preoperatively have substantial improvement at long-term follow-up. However, the effect of the operative approach on patient-reported bowel function is largely unknown. We aimed to evaluate the differences in long-term patient-reported bowel function after robotic or laparoscopic sigmoid colectomies for benign and malignant disease. MATERIALS AND METHODS: A retrospective analysis of a prospectively collected institutional database from July 2015 to July 2020. Patients included underwent a sigmoid colectomy for benign or malignant disease and completed the Colorectal Functional Outcome (COREFO) questionnaire at preoperative presentation, postoperatively, and long-term follow-up. Differences between preoperative and postoperative scores, as well as differences between the robotic and laparoscopic cohorts, were compared using paired t-tests. RESULTS: A total of 169 patients met inclusion criteria with a median age of 61 y, and 55% of the patients underwent robotic sigmoid colectomy, with the most common diagnosis being diverticular disease (62%). There was no significant difference between the presentation, short-term, or long-term follow-up total COREFO scores or subdomains based on the surgical technique. Patients that present asymptomatic remain asymptomatic, while those that are symptomatic demonstrate improvements for both the robotic and laparoscopic groups. CONCLUSIONS: Patient-reported long-term global bowel function does not appear to differ between patients who underwent elective robotic or laparoscopic sigmoid colectomy for benign or malignant disease. Patients that present asymptomatic remain asymptomatic, while those that are symptomatic demonstrate improvements, regardless of surgical technique.

The quantum chemical solvation of indole: accounting for strong solute-solvent interactions using implicit/explicit models.

In this paper, we investigate the efficacy of different quantum chemical solvent modelling methods of indole in both water and methylcyclohexane solutions. The goal is to show that one can yield good photophysical properties in strongly coupled solute-solvent systems using standard DFT methods. We use standard and linearly-corrected Polarisable Continuum Models (PCM), as well as explicit solvation models, and compare the different model parameters, including the choice of density functional, basis set, and number of explicit solvent molecules. We demonstrate that implicit models overestimate energies and oscillator strengths. In particular, for indole-water, no level inversion is observed, suggesting a dielectric medium on its own is insufficient. In contrast, energies are seen to converge fairly rapidly with respect to cluster size towards experimentally measured properties in the explicit models. We find that the use of B3LYP with a diffuse basis set can adequately represent the photophysics of the system with a cluster size of between 9-12 explicit water molecules. Sampling of configurations from a molecular dynamics simulation suggests that the single point results are suitably representative of the solvated ensemble. For indole-water, we show that solvent reorganisation plays a significant role in stabilisation of the excited state energies. It is hoped that the findings and observations of this study will aid in the choice of solvation model parameters in future studies.

Physicians perceive that ostomates have decreased quality of life but not overall health: An international survey of physicians.

AIM: The aim of this work was to evaluate physicians' perceptions of ostomates' quality of life (QoL) and comfort of care among an international sample of physicians caring for ostomates. METHOD: This was a cross-sectional survey study. We conducted a survey of primary care physicians (PCP), gastroenterologists (GI), and general surgeons (GS) from three continents using the SERMO online physician platform. We piloted the survey for content, clarity and domain development using a pilot sample of physicians from each speciality before use. We summarized responses to questions related to physician comfort of ostomate care with descriptive statistics. We conducted multiple logistic regression with the primary outcome of physician perception of ostomate QoL. RESULTS: A total of 617 physicians (PCP 264, GI 176, GS 177) completed the survey representing North America, Europe and Australia similarly. The average age was 46 years and 21% were women. Ninety per cent of physicians care for an ostomate at least once per month. Eighty eight per cent had access to enterostomal nurses. Eighty two per cent of physicians believed that ostomates have decreased QoL. Forty seven per cent believed that ostomates have decreased overall health. Almost half of respondents answered incorrectly to a 'bogus question' citing fake clinical evidence supporting a negative impact of ostomies on social relationships. Increased physician comfort in ostomy care (OR 1.30, p = 0.04) and US-based physicians (OR 1.75, p = 0.01) were associated with increased odds of answering that ostomates have no decreased QoL. CONCLUSION: Among a diverse international sample, most physicians believe that ostomates have decreased QoL but not overall health. Physician implicit bias, physician comfort and geographical variability account for these findings. Targeted efforts to increase physician comfort in ostomate care and establish universal best practices is needed.

Transmission of community- and hospital-acquired SARS-CoV-2 in hospital settings in the UK: A cohort study.

BACKGROUND: Nosocomial spread of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has been widely reported, but the transmission pathways among patients and healthcare workers (HCWs) are unclear. Identifying the risk factors and drivers for these nosocomial transmissions is critical for infection prevention and control interventions. The main aim of our study was to quantify the relative importance of different transmission pathways of SARS-CoV-2 in the hospital setting. METHODS AND FINDINGS: This is an observational cohort study using data from 4 teaching hospitals in Oxfordshire, United Kingdom, from January to October 2020. Associations between infectious SARS-CoV-2 individuals and infection risk were quantified using logistic, generalised additive and linear mixed models. Cases were classified as community- or hospital-acquired using likely incubation periods of 3 to 7 days. Of 66,184 patients who were hospitalised during the study period, 920 had a positive SARS-CoV-2 PCR test within the same period (1.4%). The mean age was 67.9 (±20.7) years, 49.2% were females, and 68.5% were from the white ethnic group. Out of these, 571 patients had their first positive PCR tests while hospitalised (62.1%), and 97 of these occurred at least 7 days after admission (10.5%). Among the 5,596 HCWs, 615 (11.0%) tested positive during the study period using PCR or serological tests. The mean age was 39.5 (±11.1) years, 78.9% were females, and 49.8% were nurses. For susceptible patients, 1 day in the same ward with another patient with hospital-acquired SARS-CoV-2 was associated with an additional 7.5 infections per 1,000 susceptible patients (95% credible interval (CrI) 5.5 to 9.5/1,000 susceptible patients/day) per day. Exposure to an infectious patient with community-acquired Coronavirus Disease 2019 (COVID-19) or to an infectious HCW was associated with substantially lower infection risks (2.0/1,000 susceptible patients/day, 95% CrI 1.6 to 2.2). As for HCW infections, exposure to an infectious patient with hospital-acquired SARS-CoV-2 or to an infectious HCW were both associated with an additional 0.8 infection per 1,000 susceptible HCWs per day (95% CrI 0.3 to 1.6 and 0.6 to 1.0, respectively). Exposure to an infectious patient with community-acquired SARS-CoV-2 was associated with less than half this risk (0.2/1,000 susceptible HCWs/day, 95% CrI 0.2 to 0.2). These assumptions were tested in sensitivity analysis, which showed broadly similar results. The main limitations were that the symptom onset dates and HCW absence days were not available. CONCLUSIONS: In this study, we observed that exposure to patients with hospital-acquired SARS-CoV-2 is associated with a substantial infection risk to both HCWs and other hospitalised patients. Infection control measures to limit nosocomial transmission must be optimised to protect both staff and patients from SARS-CoV-2 infection.

Late and Long-term Symptom Management in Colorectal Cancer Survivorship.

CASE SUMMARY: A 59-year-old previously healthy, asymptomatic man initially presented for his first screening colonoscopy. At this time, a friable, partially obstructing tumor was encountered in his proximal rectum. Final workup demonstrated a mrT2N1M0 upper rectal cancer. The patient went on to successfully complete total neoadjuvant chemoradiation therapy and was taken to the operating room for an uncomplicated robotic-assisted low anterior resection with primary anastomosis. His final pathology revealed an ypT2N1M0 rectal cancer, and he was subsequently followed in surveillance per National Comprehensive Cancer Network guidelines. At long-term follow-up visits he continued to report significant depressive symptoms and functional impairment. Despite aggressive medical management with fiber supplementation and antidiarrheal medications, the patient continued to struggle with bowel movement frequency and urgency. He reported having 4 to 6 clustered bowel movements during the day and 1 to 2 stools at night that significantly limited his ability to perform normal day-to-day activities.

Long-term bowel function patient-reported outcomes after successful chemoradiation for carcinoma of the anal canal.

AIM: We aimed to evaluate long-term changes in patient-reported bowel function from presentation of anal canal squamous cell carcinoma (SCC) successfully treated with the modified Nigro protocol using a patient-reported outcome measure for bowel function. METHOD: This is a retrospective study of prospectively collected patient-reported outcomes for bowel function. We included patients that were successfully treated with the modified Nigro protocol for anal SCC and had completed the Colorectal Functional Outcomes (COREFO) questionnaire at presentation, following the modified Nigro treatment (post-Nigro), and at subsequent surveillance visits (medium and long term). We compared the differences in mean domain and total COREFO scores using a paired t test for each paired time point. RESULTS: Twenty-seven patients met inclusion criteria. Time from completion of the modified Nigro was post-Nigro at 3-6 months, medium-length follow-up at 8-12 months and long-term follow-up at 12-18 months. There was significant improvement in the stool-related aspects domain (pain, bleeding and anal skin irritation) from presentation to our short- and medium-length follow-up (42.5 to 23.7, P = 0.01). There was worsening in the frequency domain in the medium term (7.23 to 14.5, P = 0.02). There were no differences in any other domain or time point. CONCLUSION: Global bowel function does not appear to change following successful treatment of anal canal SCC with the modified Nigro protocol in the long term. There are some improvements in stool-related aspects and worsening in bowel movement frequency at medium-length follow-up. These findings should help surgeons counsel patients with regard to bowel function expectations for those with anal canal SCC in the long term.

Correlation consistent basis sets for explicitly correlated wavefunctions: Pseudopotential-based basis sets for the group 11 (Cu, Ag, Au) and 12 (Zn, Cd, Hg) elements.

New correlation consistent basis sets for the group 11 (Cu, Ag, Au) and 12 (Zn, Cd, Hg) elements have been developed specifically for use in explicitly correlated F12 calculations. This includes orbital basis sets for valence only (cc-pVnZ-PP-F12, n = D, T, Q) and outer core-valence (cc-pCVnZ-PP-F12) correlation, along with both of these augmented with additional high angular momentum diffuse functions. Matching auxiliary basis sets required for density fitting and resolution-of-the-identity approaches to conventional and F12 integrals have also been optimized. All of the basis sets are to be used in conjunction with small-core relativistic pseudopotentials [Figgen et al., Chem. Phys. 311, 227 (2005)]. The accuracy of the basis sets is determined through benchmark calculation at the explicitly correlated coupled-cluster level of theory for various properties of atoms and diatomic molecules. The convergence of the properties with respect to the basis set is dramatically improved compared to conventional coupled-cluster calculations, with cc-pVTZ-PP-F12 results close to conventional estimates of the complete basis set limit. The patterns of convergence are also greatly improved compared to those observed from the use of conventional correlation consistent basis sets in F12 calculations.

Efficient enumeration of bosonic configurations with applications to the calculation of non-radiative rates.

This work presents algorithms for the efficient enumeration of configuration spaces following Boltzmann-like statistics, with example applications to the calculation of non-radiative rates, and an open-source implementation. Configuration spaces are found in several areas of physics, particularly wherever there are energy levels that possess variable occupations. In bosonic systems, where there are no upper limits on the occupation of each level, enumeration of all possible configurations is an exceptionally hard problem. We look at the case where the levels need to be filled to satisfy an energy criterion, for example, a target excitation energy, which is a type of knapsack problem as found in combinatorics. We present analyses of the density of configuration spaces in arbitrary dimensions and how particular forms of kernel can be used to envelope the important regions. In this way, we arrive at three new algorithms for enumeration of such spaces that are several orders of magnitude more efficient than the naive brute force approach. Finally, we show how these can be applied to the particular case of internal conversion rates in a selection of molecules and discuss how a stochastic approach can, in principle, reduce the computational complexity to polynomial time.

Physical activity interventions, chronic pain, and subjective well-being among persons with spinal cord injury: a systematic scoping review.

STUDY DESIGN: Scoping review of experimental and quasi-experimental studies. OBJECTIVE: To systematically synthesize research testing the effects of leisure time physical activity (LTPA) interventions on chronic pain and subjective well-being (SWB) among adults with spinal cord injury (SCI). METHODS: Literature searches were conducted using multiple databases (Web of Science, Embase, CINAHL, Medline, PsychINFO and SPORTDiscus) to identify studies involving persons with SCI that measured and reported the effects of LTPA interventions on both chronic pain and at least one measure of SWB (e.g., affect, life satisfaction, satisfaction with various life domains). Relevant data were extracted from the studies and synthesized. RESULTS: A total of 3494 articles were screened. Fifteen published articles, consisting of 12 different studies met the review inclusion criteria. Four different patterns of findings were observed regarding the effect of LTPA on chronic pain and SWB outcomes: (1) increased chronic pain, decreased SWB (1 article); (2) decreased chronic pain, improved SWB (12 articles); (3) increased chronic pain, improved SWB (1 article); and (4) unchanged levels of pain, improved SWB (1 article). CONCLUSIONS: Results of most articles included in this scoping review suggest that LTPA interventions can reduce chronic pain and improve SWB for persons with SCI. Further research is needed to identify the mechanisms by which LTPA affects pain and SWB, in order to formulate LTPA prescriptions that maximize improvements in these outcomes.

A Scoping Review of Peer Mentorship Studies for People with Disabilities: Exploring Interaction Modality and Frequency of Interaction.

Given our understanding of the importance of peer mentorship for people with disabilities, research needs to begin exploring characteristics of the mentor-mentee relationship that could contribute to the observed positive outcomes. To date, no review has examined characteristics of peer mentorship (i.e. interaction modality, interaction frequency) that could impact the quality and effectiveness of this service. The primary purpose was to synthesize the peer-reviewed peer mentorship literature for people with disabilities and report on the interaction modality and frequency employed in each study. A secondary purpose was to document the results of studies that have tested relationships between the outcomes of peer mentorship and interaction modality or frequency. A scoping review was performed that involved a systematic search of MEDLINE, EMBASE, PsychINFO, CINAHL, Web of Science, and SPORTDiscus. Thirteen studies met the inclusion criteria. Articles reported five different interaction modalities; the telephone (n = 12) was the most common. Frequency of interactions was reported in nine studies with mentees reporting between 3 and 77 interactions with their mentor. Only one study attempted to analyze the mediating or moderating effects of modality and frequency on the reported outcomes. In conclusion, peer mentorship is occurring through various interaction modalities and at varying frequencies. Future research should focus on examining the impact that modality and frequency of interaction have on outcomes of peer mentorship.

Estimating local need for mental healthcare to inform fair resource allocation in the NHS in England: cross-sectional analysis of national administrative data linked at person level.

BACKGROUND: Equitable access to mental healthcare is a priority for many countries. The National Health Service in England uses a weighted capitation formula to ensure that the geographical distribution of resources reflects need. AIMS: To produce a revised formula for estimating local need for secondary mental health, learning disability (intellectual disability) and psychological therapies services for adults in England. METHOD: We used demographic records for 43 751 535 adults registered with a primary care practitioner in England linked with service use, ethnicity, physical health diagnoses and type of household, from multiple data-sets. Using linear regression, we estimated the individual cost of care in 2015 as a function of individual- and area-level need and supply variables in 2013 and 2014. We sterilised the effects of the supply variables to obtain individual-need estimates. We aggregated these by general practitioner practice, age and gender to derive weights for the national capitation formula. RESULTS: Higher costs were associated with: being 30-50 years old, compared with 20-24; being Irish, Black African, Black Caribbean or of mixed ethnicity, compared with White British; having been admitted for specific physical health conditions, including drug poisoning; living alone, in a care home or in a communal environment; and living in areas with a higher percentage of out-of-work benefit recipients and higher prevalence of severe mental illness. Longer distance from a provider was associated with lower cost. CONCLUSIONS: The resulting needs weights were higher in more deprived areas and informed the distribution of some 12% (£9 bn in 2019/20) of the health budget allocated to local organisations for 2019/20 to 2023/24.

Computational Investigations of Dispersion Interactions between Small Molecules and Graphene-like Flakes.

We investigate dispersion interactions in a selection of atomic, molecular, and molecule-surface systems, comparing high-level correlated methods with empirically corrected density functional theory (DFT). We assess the efficacy of functionals commonly used for surface-based calculations, with and without the D3 correction of Grimme. We find that the inclusion of the correction is essential to get meaningful results, but there is otherwise little to distinguish between the functionals. We also present coupled-cluster quality interaction curves for H2, NO2, H2O, and Ar interacting with large carbon flakes, acting as models for graphene surfaces, using novel absolutely localized molecular orbital based methods. These calculations demonstrate that the problems with empirically corrected DFT when investigating dispersion appear to compound as the system size increases, with important implications for future computational studies of molecule-surface interactions.