Publications by authors named "Shona Fielding"

Background: It is not known if continuous exposure to artificial intelligence (AI) changes endoscopists' behaviour when conducting colonoscopy. We assessed how endoscopists who regularly used AI performed colonoscopy when AI was not in use.

Methods: We conducted a retrospective, observational study at four endoscopy centres in Poland taking part in the ACCEPT (Artificial Intelligence in Colonoscopy for Cancer Prevention) trial.

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Background: Observational studies of people with chronic obstructive pulmonary disease using beta-blockers for cardiovascular disease indicate that beta-blocker use is associated with reduced risk of chronic obstructive pulmonary disease exacerbation. However, at the time this study was initiated, there had been no randomised controlled trials confirming or refuting this.

Objective(s): To determine the clinical and cost-effectiveness of adding bisoprolol (maximal dose 5 mg once daily) to usual chronic obstructive pulmonary disease therapies in patients with chronic obstructive pulmonary disease at high risk of exacerbation.

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Background: Body mass index (BMI) may affect prognosis in patients with breast cancer (BC). We assessed the association of BMI and weight changes with outcomes of patients with HER2-positive early BC included in the APHINITY trial.

Methods: This is an exploratory analysis of APHINITY (NCT01358877), randomized trial testing adjuvant dual vs.

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Importance: Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality worldwide. Observational studies report that β-blocker use may be associated with reduced risk of COPD exacerbations. However, a recent trial reported that metoprolol did not reduce COPD exacerbations and increased COPD exacerbations requiring hospital admission.

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Limited data exist on the effect of travelling time on post-diagnosis cancer care and mortality. We analysed the impact of travel time to cancer treatment centre on secondary care contact time and one-year mortality using a data-linkage study in Scotland with 17369 patients. Patients with longer travelling time and island-dwellers had increased incidence rate of secondary care cancer contact time.

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Objective: To investigate how individuals diagnosed with cancer use out-of-hours (OOH) medical services, describe the behavioural determinants of OOH service use and explore whether there are differences between urban and rural dwellers.

Design And Setting: A cross-sectional questionnaire study conducted in Northeast Scotland.

Participants: The questionnaire was sent to 2549 individuals diagnosed with cancer in the preceding 12 months identified through the National Health Service Grampian Cancer Care Pathway database.

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Article Synopsis
  • A study investigated the long-term survival benefits of adding lapatinib to chemotherapy and trastuzumab in HER2-positive early breast cancer, comparing rates of pathological complete response (pCR).* -
  • Over a ten-year follow-up, patients receiving the combination treatment showed event-free survival (EFS) rates of 67% and overall survival (OS) rates of 80%, with pCR linked to significantly better EFS and OS.* -
  • The findings indicate that neoadjuvant anti-HER2 therapy provides lasting survival advantages for patients, particularly for those achieving pCR, without any new safety issues reported.*
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Background: Young age at breast cancer (BC) diagnosis has historically been a rationale for overtreatment. Limited data with short follow-up exist on the prognostic value of age at diagnosis in HER2-positive BC and the benefit of anti-HER2 therapy in young patients.

Methods: APHINITY (NCT01358877) is an international, placebo-controlled, double-blind randomized phase III trial in HER2-positive early BC patients investigating the addition of pertuzumab to adjuvant chemotherapy plus trastuzumab.

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Background: Chronic obstructive pulmonary disease (COPD) is associated with significant morbidity, mortality and healthcare costs. Beta blockers are well-established drugs widely used to treat cardiovascular conditions. Observational studies consistently report that beta blocker use in people with COPD is associated with a reduced risk of COPD exacerbations.

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Background: The benefit of fractional exhaled nitric oxide (FeNO) in guiding asthma treatment is uncertain. We evaluated the efficacy of adding FeNO to symptom-guided treatment in children with asthma versus only symptom-guided treatment.

Methods: RAACENO was a multicentre, parallel, randomised, controlled, phase 3 trial done in 35 secondary care centres and 17 primary care recruitment sites (only seven primary care sites managed to recruit patients) in the UK.

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Background: Seasonal variations have been reported for immune markers. However, the relative contributions of sunlight and vitamin D variability on such seasonal changes are unknown.

Objective: This double-blind, randomized, placebo-controlled trial tested whether daily 400 IU vitamin D supplementation affected short-term (12 weeks) and long-term (43 weeks) natural regulatory T cell (nTreg) populations in healthy participants.

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Article Synopsis
  • A study involving 11,803 cancer patients in Northeast Scotland investigated the impact of travel time to hospitals on treatment and one-year mortality, considering socioeconomic status (SES) factors.
  • It found that patients living over 60 minutes from the hospital were treated more quickly but also had higher one-year mortality rates compared to those living within 15 minutes, suggesting distance significantly influences outcomes.
  • The research indicates that the poorer survival rates in rural areas are more likely due to distance from healthcare facilities rather than individual-level SES factors.
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To determine cervical cancer risk associated with contemporary hormonal contraceptives, we conducted a cohort study of women aged 15 to 49 living in Denmark from 1995 to 2014, using routinely collected information about redeemed prescriptions, incident cancer and potential confounders. Poisson regression calculated adjusted cervical cancer risks among different contraceptive user groups by duration of use, time since last use, hormonal content and cancer histology. During >20 million person-years, 3643 incident cervical cancers occurred.

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Article Synopsis
  • The study aimed to investigate the link between hormonal contraceptive use and the risk of endometrial cancer in women under 50, using a cohort from Denmark over nearly two decades.
  • Findings revealed that women who ever used hormonal contraceptives showed a reduced risk of developing endometrial cancer compared to non-users, with the greatest protection seen among current or recent users of combined contraceptives.
  • Former users of hormonal contraception still enjoyed reduced risks more than a decade after cessation, highlighting the long-term protective effects of these contraceptives against endometrial cancer.
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Introduction: Exhaled nitric oxide fraction ( ), a biomarker of eosinophilic airway inflammation, may be useful to guide asthma treatment. -guided treatment may be more effective in certain subgroups for improving asthma outcomes compared to standard treatment.

Methods: An individual patient data analysis was performed using data from seven randomised clinical trials (RCTs) which used to guide asthma treatment.

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Introduction: Fractional exhaled nitric oxide (F NO) may be a useful objective measurement to guide asthma treatment. What remains uncertain is what change in F NO is clinically significant.

Methods: An individual patient data analysis was performed using data from seven randomized clinical trials which used F NO to guide asthma treatment.

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Background: Despite widespread use of therapies such as inhaled corticosteroids (ICSs), people with chronic obstructive pulmonary disease (COPD) continue to suffer, have reduced life expectancy and utilise considerable NHS resources. Laboratory investigations have demonstrated that at low plasma concentrations (1-5 mg/l) theophylline markedly enhances the anti-inflammatory effects of corticosteroids in COPD.

Objective: To determine the clinical effectiveness and cost-effectiveness of adding low-dose theophylline to a drug regimen containing ICSs in people with COPD at high risk of exacerbation.

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Background: Randomised controlled trials (RCTs) are considered the gold standard when evaluating the causal effects of healthcare interventions. When RCTs cannot be used (e.g.

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Background: A significant proportion of international students at UK universities are from regions with medium to high hepatitis B prevalence rates. Understanding the perception of students regarding hepatitis B infection is crucial for the development of appropriate information and services for this population group.

Methods: Twenty semi-structured interviews were conducted with students from the University of Aberdeen.

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Background: Being overweight or obese following breast cancer diagnosis can increase cancer recurrence and mortality, so effective interventions for weight loss in this group could enhance survival. A pilot randomised controlled trial was conducted to assess whether a weight loss programme comprising generic Weight Watchers® referral offered to women treated for breast cancer with or without additional breast cancer-tailored dietetic support is feasible and shows promise for improving weight and quality of life (QoL).

Methods: Participants were randomly allocated to 3 groups: Weight Watchers® referral (for 12 sessions of meetings and digital tools) plus 5 breast cancer-tailored dietitian-led group support sessions (WW Plus:  = 14), Weight Watchers® referral only (WW:  = 16) or control (Weight Watchers® referral after 3 months,  = 15).

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