Publications by authors named "Sam Harper"

Outdoor and household PM are established risk factors for chronic disease and early mortality. In China, high levels of outdoor PM and solid fuel use for cooking and heating, especially in winter, pose large health risks to the country's aging population. Hand grip strength is a validated biomarker of functional aging and strong predictor of disability and mortality in older adults.

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Background And Objective: Health technology assessment (HTA) of haemato-oncology therapies typically requires extrapolation of long-term survival beyond a trial's follow-up. Health technology assessment agencies must balance caution around uncertainty in early follow-up trial data whilst aiming to provide timely access. This study qualitatively and quantitatively assessed how eight HTA agencies considered maturing data and external evidence.

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Background: Foreign-born mothers are generally believed to experience better perinatal outcomes than Canadian-born mothers, despite relatively lower socioeconomic status. However, the magnitude and direction of inequalities by nativity status vary across outcomes. Little is known about factors contributing to the health inequalities by nativity status across different perinatal outcomes.

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Objective: To determine if routine administration of antenatal corticosteroids affects the risk of infant lower respiratory tract infection and/or childhood asthma.

Design: Linked population-based cohort analysed using a regression discontinuity design, which better controls for confounding than standard observational studies.

Setting: British Columbia, Canada.

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Background: Although increasing cigarette taxes is known to improve child survival, there are few data on their effect on socioeconomic inequalities in child mortality. We investigated the association between cigarette taxation and socioeconomic inequalities in mortality in children younger than 5 years (hereafter referred to as under-5 mortality) in low-income and middle-income countries (LMICs).

Methods: This was a longitudinal ecological study.

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Objectives: Loneliness is highly prevalent and can have severe health consequences. While generally assumed to increase with age, some evidence suggests the relationship between age and loneliness may vary across country. In this study, we investigate the contribution of demographic and health factors to age-related inequalities in loneliness both within and across countries.

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On March 11th 2020, the World Health Organization characterised COVID-19 as a pandemic. Responses to containing the spread of the virus have relied heavily on policies involving restricting contact between people. Evolving policies regarding shielding and individual choices about restricting social contact will rely heavily on perceived risk of poor outcomes from COVID-19.

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Mental disorders are associated with elevated mortality rates and reduced life expectancy. However, it is unclear whether these associations differ by socioeconomic position (SEP). The aim of this study was to explore comprehensively the role of individual-level SEP in the associations between specific types of mental disorders and mortality (due to all causes, and to natural or external causes), presenting both relative and absolute measures.

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Background: In 2015, the Chinese Government launched the coal to clean heating policy (CHP), designed to improve air quality and health in China. The CHP banned household coal burning and provided subsidies for clean electric or gas-powered heating for millions of peri-urban and rural households. We aimed to investigate whether the CHP affected the incidence of acute myocardial infarction in Beijing townships.

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Background: Women in India are often responsible for unpaid household work, family caregiving, and paid work, which can contribute to poorer mental health. The provision of childcare has the potential to improve women's mental health, but evidence on the effects of providing access to daycare is limited.

Methods: We designed a cluster-randomised trial and used data from a sample of 2858 mothers with age-eligible children from 160 village hamlets in rural Rajasthan, India, to evaluate the impact of providing access to a community-based daycare programme on social and emotional aspects of women's mental health.

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Article Synopsis
  • The standard treatment for GERD is proton pump inhibitors (PPIs), but new options like RefluxStop, a minimally invasive treatment, are emerging.
  • A cost-effectiveness analysis using a Markov model showed that RefluxStop is likely more cost-effective than both PPIs and Nissen fundoplication in Sweden, with high probabilities of being cost-effective.
  • RefluxStop may provide a better long-term treatment option for GERD patients compared to traditional therapies, as it has shown promising results in terms of cost-effectiveness.
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Article Synopsis
  • GERD is commonly treated in Italy with proton pump inhibitors or laparoscopic Nissen fundoplication, but a new device called RefluxStop offers an effective alternative.
  • A budget impact model was created to evaluate the financial implications of adding RefluxStop as a treatment option over five years, comparing it to standard therapies.
  • The introduction of RefluxStop is expected to reduce surgical failures and reoperations while resulting in only a minor increase in the annual budget for GERD treatment in Italy.
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Article Synopsis
  • * In the OpenSAFELY-TPP database, 78.2% of patients had their ethnicity recorded in primary care as of January 2022, with higher rates in women and those with serious health conditions.
  • * The primary care ethnicity data closely matched the 2021 UK census data, with a high consistency found among patients with multiple ethnicity records, particularly indicating issues with classification for those recorded as "Other."
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Background: One of the most prevalent conditions in Western societies is gastroesophageal reflux disease (GERD). In Switzerland, the standard treatment for GERD is proton pump inhibitor (PPI)-based medical management, but surgical options such as Nissen fundoplication and magnetic sphincter augmentation (MSA) are available. RefluxStop is a novel device that offers an alternative solution.

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Article Synopsis
  • - The study examines how the Covid-19 pandemic influenced the rates of group A streptococcal infections and related antibiotic prescriptions in primary care practices across England from January 2018 to March 2023.
  • - Significant findings show that infections and antibiotic prescriptions peaked in December 2022, surpassing levels seen during the 2017-18 season, with notable increases in rates for sore throat, scarlet fever, and invasive infections.
  • - The research highlights a concerning trend, reporting that the rate ratios for infections and prescriptions in the 2022-23 season were considerably higher compared to the pre-pandemic period, suggesting lasting impacts from the pandemic on public health.
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Aims: The COVID-19 pandemic created unprecedented pressure on healthcare services. This study investigates whether disease-modifying antirheumatic drug (DMARD) safety monitoring was affected during the COVID-19 pandemic.

Methods: A population-based cohort study was conducted using the OpenSAFELY platform to access electronic health record data from 24.

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Aims: The COVID-19 pandemic caused significant disruption to routine activity in primary care. Medication reviews are an important primary care activity ensuring safety and appropriateness of prescribing. A disruption could have significant negative implications for patient care.

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Background: Before the COVID-19 pandemic, access to prenatal care was lower among some socio-demographic groups. This pandemic caused disruptions to routine preventative care, which could have increased inequalities.

Objectives: To investigate if the COVID-19 pandemic increased inequalities in access to prenatal care among those who are younger, live in rural areas, have a lower socio-economic situation (SES) and are recent immigrants.

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Gastro-oesophageal reflux disease (GORD) is a common condition associated with heartburn and regurgitation. Standard of care for GORD patients in the UK involves initial treatment with proton pump inhibitors (PPIs) and laparoscopic antireflux surgery in patients unwilling to continue or intolerant of long-term PPI treatment. Recently, RefluxStop™, a novel, implantable medical device, has proven to be an efficacious and cost-effective treatment for patients with GORD.

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Objective: To estimate the effect of antenatal corticosteroids on newborn respiratory morbidity in twins.

Design: Regression discontinuity applied to population-based birth registry data.

Setting: British Columbia, Canada, 2008-2018.

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Background: Timely evidence of the comparative effectiveness between COVID-19 therapies in real-world settings is needed to inform clinical care. This study aimed to compare the effectiveness of nirmatrelvir/ritonavir versus sotrovimab and molnupiravir in preventing severe COVID-19 outcomes in non-hospitalised high-risk COVID-19 adult patients during Omicron waves.

Methods: With the approval of NHS England, we conducted a real-world cohort study using the OpenSAFELY-TPP platform.

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Background: In Canada, all provinces implemented vaccine passports in 2021 to reduce SARS-CoV-2 transmission in non-essential indoor spaces and increase vaccine uptake (policies active September 2021-March 2022 in Quebec and Ontario). We sought to evaluate the impact of vaccine passport policies on first-dose SARS-CoV-2 vaccination coverage by age, and area-level income and proportion of racialized residents.

Methods: We performed interrupted time series analyses using data from Quebec's and Ontario's vaccine registries linked to census information (population of 20.

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Background: The COVID-19 pandemic affected how care was delivered to vulnerable patients, such as those with dementia or learning disability.

Objective: To explore whether this affected antipsychotic prescribing in at-risk populations.

Methods: With the approval of NHS England, we completed a retrospective cohort study, using the OpenSAFELY platform to explore primary care data of 59 million patients.

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Synopsis of recent research by authors named "Sam Harper"

  • - Sam Harper's recent research primarily focuses on the economic evaluation and cost-effectiveness of innovative treatments for gastroesophageal reflux disease (GERD), particularly the RefluxStop device, emphasizing its comparative benefits over traditional therapies such as proton pump inhibitors and surgical options.
  • - His studies also investigate significant health disparities and outcomes impacted by the COVID-19 pandemic, utilizing large datasets from NHS health records to analyze effects on various patient demographics, prescribing practices, and healthcare delivery.
  • - Additionally, Harper examines the methodology of ethnic coding in health records to enhance the use of administrative data for equitable healthcare research and the evaluation of healthcare policies, aiming to support improved service provision across different population groups.