scholarly journals Oseltamivir and influenza-related complications in children: a retrospective cohort in primary care

2020 ◽  
Vol 56 (5) ◽  
pp. 1902246
Author(s):  
Joseph Jonathan Lee ◽  
Margaret Smith ◽  
Clare Bankhead ◽  
Rafael Perera Salazar ◽  
Antonis A. Kousoulis ◽  
...  
Keyword(s):  
Primary Care ◽  
Instrumental Variable ◽  
Retrospective Cohort ◽  
Causal Effect ◽  
Influenza Pandemic ◽  
Antiviral Treatment ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
National Guidelines ◽  
Related Hospitalisation

BackgroundInfluenza and influenza-like illness (ILI) place considerable burden on healthcare systems, especially during influenza epidemics and pandemics. During the 2009/10 H1N1 influenza pandemic, UK national guidelines recommended antiviral medications for patients presenting within 72 h of ILI onset. However, it is not clear whether antiviral treatment was associated with reductions in influenza-related complications.MethodsOur study population consisted of a retrospective cohort of children aged ≤17 years who presented with influenza/ILI at UK primary care practices contributing to the Clinical Practice Research Datalink during the 2009/10 pandemic. We used doubly robust inverse-probability weighted propensity scores and physician prior prescribing instrumental variable methods to estimate the causal effect of oseltamivir prescribing on influenza-related complications. Secondary outcomes were complications requiring intervention, pneumonia, pneumonia or hospitalisation, influenza-related hospitalisation and all-cause hospitalisation.ResultsWe included 16 162 children, of whom 4028 (24.9%) were prescribed oseltamivir, and 753 (4.7%) had recorded complications. Under propensity score analyses oseltamivir prescriptions were associated with reduced influenza-related complications (risk difference (RD) −0.015, 95% CI −0.022–−0.008), complications requiring further intervention, pneumonia, pneumonia or hospitalisation and influenza-related hospitalisation, but not all-cause hospitalisation. Adjusted instrumental variable analyses estimated reduced influenza-related complications (RD −0.032, 95% CI −0.051–−0.013), pneumonia or hospitalisation, all-cause and influenza-related hospitalisations.ConclusionsBased on causal inference analyses of observational data, oseltamivir treatment in children with influenza/ILI was associated with a small but statistically significant reduction in influenza-related complications during an influenza pandemic.

scholarly journals Varenicline versus nicotine replacement therapy for long-term smoking cessation: an observational study using the Clinical Practice Research Datalink

2020 ◽  
Vol 24 (9) ◽  
pp. 1-46
Author(s):  
Neil M Davies ◽  
Amy E Taylor ◽  
Gemma MJ Taylor ◽  
Taha Itani ◽  
Tim Jones ◽  
...  
Keyword(s):  
Primary Care ◽  
Smoking Cessation ◽  
Clinical Practice ◽  
Confidence Interval ◽  
Replacement Therapy ◽  
Nicotine Replacement Therapy ◽  
Instrumental Variable ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Nicotine Replacement

Background Smoking is the leading avoidable cause of illness and premature mortality. The first-line treatments for smoking cessation are nicotine replacement therapy and varenicline. Meta-analyses of experimental studies have shown that participants allocated to the varenicline group were 1.57 times (95% confidence interval 1.29 to 1.91 times) as likely to be abstinent 6 months after treatment as those allocated to the nicotine replacement therapy group. However, there is limited evidence about the effectiveness of varenicline when prescribed in primary care. We investigated the effectiveness and rate of adverse events of these medicines in the general population. Objective To estimate the effect of prescribing varenicline on smoking cessation rates and health outcomes. Data sources Clinical Practice Research Datalink. Methods We conducted an observational cohort study using electronic medical records from the Clinical Practice Research Datalink. We extracted data on all patients who were prescribed varenicline or nicotine replacement therapy after 1 September 2006 who were aged ≥ 18 years. We investigated the effects of varenicline on smoking cessation, all-cause mortality and cause-specific mortality and hospitalisation for: (1) chronic lung disease, (2) lung cancer, (3) coronary heart disease, (4) pneumonia, (5) cerebrovascular disease, (6) diabetes, and (7) external causes; primary care diagnosis of myocardial infarction, chronic obstructive pulmonary disease, depression, or prescription for anxiety; weight in kg; general practitioner and hospital attendance. Our primary outcome was smoking cessation 2 years after the first prescription. We investigated the baseline differences between patients prescribed varenicline and patients prescribed nicotine replacement therapy. We report results using multivariable-adjusted, propensity score and instrumental variable regression. Finally, we developed methods to assess the relative bias of the different statistical methods we used. Results People prescribed varenicline were healthier at baseline than those prescribed nicotine replacement therapy in almost all characteristics, which highlighted the potential for residual confounding. Our instrumental variable analysis results found little evidence that patients prescribed varenicline had lower mortality 2 years after their first prescription (risk difference 0.67, 95% confidence interval –0.11 to 1.46) than those prescribed nicotine replacement therapy. They had similar rates of all-cause hospitalisation, incident primary care diagnoses of myocardial infarction and chronic obstructive pulmonary disease. People prescribed varenicline subsequently attended primary care less frequently. Patients prescribed varenicline were more likely (odds ratio 1.46, 95% confidence interval 1.42 to 1.50) to be abstinent 6 months after treatment than those prescribed nicotine replacement therapy when estimated using multivariable-adjusted for baseline covariates. Patients from more deprived areas were less likely to be prescribed varenicline. However, varenicline had similar effectiveness for these groups. Conclusion Patients prescribed varenicline in primary care were more likely to quit smoking than those prescribed nicotine replacement therapy, but there was little evidence that they had lower rates of mortality or morbidity in the 4 years following the first prescription. There was little evidence of heterogeneity in effectiveness across the population. Future work Future research should investigate the decline in prescribing of smoking cessation products; develop an optimal treatment algorithm for smoking cessation; use methods for using instruments with survival outcomes; and develop methods for comparing multivariable-adjusted and instrumental variable estimates. Limitations Not all of our code lists were validated, body mass index and Index of Multiple Deprivation had missing values, our results may suffer from residual confounding, and we had no information on treatment adherence. Trial registration This trial is registered as NCT02681848. Funding This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 24, No. 9. See the NIHR Journals Library website for further project information.

scholarly journals Multimorbidity within households and health and social care utilisation and cost: retrospective cohort study using administrative data

2020 ◽  
Author(s):  
Mai Stafford ◽  
Sarah R. Deeny ◽  
Kathryn Dreyer ◽  
Jenny Shand
Keyword(s):  
Mental Health ◽  
Primary Care ◽  
Retrospective Cohort ◽  
Social Care ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Long Term Conditions ◽  
Care Utilisation ◽  
Health And Social Care ◽  
Care Activity

AbstractBackgroundThe daily management of long-term conditions falls primarily on individuals and their informal carers, but the household context and its impact on health and social care activity among people with multimorbidity is understudied.MethodsLinked data from health providers and local government in Barking and Dagenham provided a retrospective cohort of people aged 50+ in two-person households between April 2016 and March 2018. Two-part regression models were applied to estimate annualised use and cost of hospital, primary, community, mental health and social care by multimorbidity status of individuals and co-residents, adjusted for age, gender and deprivation. Applicability at the national level was tested using the Clinical Practice Research Datalink.ResultsOver 45% of multimorbid people in two-person households were co-resident with another multimorbid person. They were 1.14 (95% CI 1.00, 1.30) times as likely to have any community care activity and 1.24 (95% CI 0.99,1.54) times as likely to have any mental health care activity compared to those co-resident with a healthy person. They had more primary care visits (8.5 (95% CI 8.2,8.8) vs 7.9 (95% CI 7.7,8.2)) and higher primary care costs. Outpatient care and elective admissions did not differ between these groups. Findings in the national data were similar.ConclusionsCare utilisation for people with multimorbidity varies by household context. There may be potential for connecting health and other community service input across household members.

Delays in referral from primary care are associated with a worse survival in patients with esophagogastric cancer

2019 ◽  
Vol 32 (10) ◽  
pp. 1-11 ◽  
Author(s):  
Chanpreet S Arhi ◽  
S Markar ◽  
E M Burns ◽  
G Bouras ◽  
A Bottle ◽  
...  
Keyword(s):  
Primary Care ◽  
Cohort Study ◽  
Retrospective Cohort ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Stage At Diagnosis ◽  
Risk Of Death ◽  
Esophagogastric Cancer ◽  
Cancer Experience ◽  
Worse Prognosis

SUMMARY NICE referral guidelines for suspected cancer were introduced to improve prognosis by reducing referral delays. However, over 20% of patients with esophagogastric cancer experience three or more consultations before referral. In this retrospective cohort study, we hypothesize that such a delay is associated with a worse survival compared with patients referred earlier. By utilizing Clinical Practice Research Datalink, a national primary care linked database, the first presentation, referral date, a number of consultations before referral and stage for esophagogastric cancer patients were determined. The risk of a referral after one or two consultations compared with three or more consultations was calculated for age and the presence of symptom fulfilling the NICE criteria. The risk of death according to the number of consultations before referral was determined, while accounting for stage and surgical management. 1307 patients were included. Patients referred after one (HR 0.80 95% CI 0.68–0.93 p = 0.005) or two consultations (HR 0.81 95% CI 0.67–0.98 p = 0.034) demonstrated significantly improved prognosis compared with those referred later. The risk of death was also lower for patients who underwent a resection, were younger or had an earlier stage at diagnosis. Those presenting with a symptom fulfilling the NICE criteria (OR 0.27 95% CI 0.21–0.35 p < 0.0001) were more likely to be referred earlier. This is the first study to demonstrate an association between a delay in referral and worse prognosis in esophagogastric patients. These findings should prompt further research to reduce primary care delays.

scholarly journals The healthcare resource impact of maternal mental illness on children and adolescents: UK retrospective cohort study

2021 ◽  
pp. 1-8
Author(s):  
Holly Hope ◽  
Cemre Su Osam ◽  
Evangelos Kontopantelis ◽  
Sian Hughes ◽  
Luke Munford ◽  
...  
Keyword(s):  
Primary Care ◽  
Mental Illness ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Rate Ratio ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Healthcare Use ◽  
Maternal Mental Illness

Background The general health of children of parents with mental illness is overlooked. Aims To quantify the difference in healthcare use of children exposed and unexposed to maternal mental illness (MMI). Method This was a retrospective cohort study of children aged 0–17 years, from 1 April 2007 to 31 July 2017, using a primary care register (Clinical Practice Research Datalink) linked to Hospital Episodes Statistics. MMI included non-affective/affective psychosis and mood, anxiety, addiction, eating and personality disorders. Healthcare use included prescriptions, primary care and secondary care contacts; inflation adjusted costs were applied. The rate and cost was calculated and compared for children exposed and unexposed to MMI using negative binomial regression models. The total annual cost to NHS England of children with MMI was estimated. Results The study included 489 255 children: 238 106 (48.7%) girls, 112 741 children (23.0%) exposed to MMI. Compared to unexposed children, exposed children had a higher rate of healthcare use (rate ratio 1.27, 95% CI 1.26–1.28), averaging 2.21 extra contacts per exposed child per year (95% CI 2.14–2.29). Increased healthcare use among exposed children occurred in inpatients (rate ratio 1.37, 95% CI 1.32–1.42), emergency care visits (rate ratio 1.34, 95% CI 1.33–1.36), outpatients (rate ratio 1.30, 95% CI 1.28–1.32), prescriptions (rate ratio 1.28, 95% CI 1.26–1.30) and primary care consultations (rate ratio 1.24, 95% CI 1.23–1.25). This costs NHS England an additional £656 million (95% CI £619–£692 million), annually. Conclusions Children of mentally ill mothers are a health vulnerable group for whom targeted intervention may create benefit for individuals, families, as well as limited NHS resources.

scholarly journals Trends in HIV testing in the UK primary care setting: a 15-year retrospective cohort study from 2000 to 2015

BMJ Open ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. e027744
Author(s):  
Mark Gompels ◽  
Skevi Michael ◽  
Charlotte Davies ◽  
Tim Jones ◽  
John Macleod ◽  
...  
Keyword(s):  
Primary Care ◽  
Cohort Study ◽  
Hiv Testing ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Infected People ◽  
The Uk ◽  
Clinical Records

ObjectivesTo estimate trends in HIV testing, positivity and prevalence in UK primary care for 2000–2015 as part of a wider investigation into reasons for late diagnosis of HIV.DesignRetrospective cohort study using the Clinical Practice Research Datalink (CPRD) which is derived from computerised clinical records produced during consultations in primary care.Setting404 general practices in England.Participants5 979 598 adults aged ≥16 years registered between 2000 and 2015 with 45 093 761 person years of observation.OutcomesAnnual HIV testing rates, proportion of positive tests and prevalence of HIV-infected people recorded in primary care 2000–2015.ResultsHIV testing in primary care increased from 2000 to 2010, but then declined. Testing was higher in females than in males and in those aged 16–44 years compared with older adults. Rates per 100 000 in women aged 16–44 years were 177 (95% CI 167 to 188); 1309 (95% CI 1282 to 1336); 1789 (95% CI 1757 to 1821) and 839 (95% CI 817 to 862) in 2000, 2005, 2010 and 2015, respectively, and for non-pregnant women: 22.5 (95% CI 19 to 26); 134 (95% CI 125 to 143); 262 (95% CI 250 to 275); 190 (95% CI 179 to 201). For men aged 16–44 years rates were: 26 (95% CI 22 to 29); 107 (95% CI 100 to 115); 196 (95% CI 185 to 206); 137 (95% CI 127 to 146). Over the study period, there were approximately two positive results per 1000 HIV tests. Men were eightfold more likely to test positive than women. The percentage of HIV diagnoses among adults recorded in CPRD may be as low as 55% in London and 67% in the rest of the UK.ConclusionsHIV testing rates in primary care peaked in 2010 and subsequently declined. Access to testing was higher for women despite the prevalence of HIV being higher in men.Implications and further research neededOpportunities remain in primary care for increasing HIV testing to prevent costly late diagnoses and decrease HIV transmission. Interventions to improve targeting of tests and increase adherence to HIV testing guidelines are needed in primary care.

Preliminary results from the COPE study using primary-care electronic health records and environmental modelling to examine COPD exacerbations

2018 ◽  
Vol 68 (suppl 1) ◽  
pp. bjgp18X696749 ◽  
Author(s):  
Maimoona Hashmi ◽  
Mark Wright ◽  
Kirin Sultana ◽  
Benjamin Barratt ◽  
Lia Chatzidiakou ◽  
...  
Keyword(s):  
Primary Care ◽  
Electronic Health Records ◽  
Health Management ◽  
Practice Research ◽  
Chronic Obstructive ◽  
Clinical Practice Research Datalink ◽  
Health Records ◽  
Preliminary Results ◽  
Copd Exacerbations ◽  
Electronic Health

BackgroundChronic Obstructive Airway Disease (COPD) is marked by often severely debilitating exacerbations. Efficient patient-centric research approaches are needed to better inform health management primary-care.AimThe ‘COPE study’ aims to develop a method of predicting COPD exacerbations utilising personal air quality sensors, environmental exposure modelling and electronic health records through the recruitment of patients from consenting GPs contributing to the Clinical Practice Research Datalink (CPRD).MethodThe study made use of Electronic Healthcare Records (EHR) from CPRD, an anonymised GP records database to screen and locate patients within GP practices in Central London. Personal air monitors were used to capture data on individual activities and environmental exposures. Output from the monitors were then linked with the EHR data to obtain information on COPD management, severity, comorbidities and exacerbations. Symptom changes not equating to full exacerbations were captured on diary cards. Linear regression was used to investigate the relationship between subject peak flow, symptoms, exacerbation events and exposure data.ResultsPreliminary results on the first 80 patients who have completed the study indicate variable susceptibility to environmental stressors in COPD patients. Some individuals appear highly susceptible to environmental stress and others appear to have unrelated triggers.ConclusionRecruiting patients through EHR for a study is feasible and allows easy collection of data for long term follow up. Portable environmental sensors could now be used to develop personalised models to predict risk of COPD exacerbations in susceptible individuals. Identification of direct links between participant health and activities would allow improved health management thus cost savings.

scholarly journals Real-world presentation with heart failure in primary care: do patients selected to follow diagnostic and management guidelines have better outcomes?

Open Heart ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. e000935
Author(s):  
Alex Bottle ◽  
Dani Kim ◽  
Paul P Aylin ◽  
F Azeem Majeed ◽  
Martin R Cowie ◽  
...  
Keyword(s):  
Heart Failure ◽  
Primary Care ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Initial Management ◽  
Risk Of Death ◽  
Specialist Referral ◽  
Partial Completion ◽  
General Practices ◽  
Using Data

ObjectiveTo describe associations between initial management of people presenting with heart failure (HF) symptoms in primary care, including compliance with the recommendations of the National Institute for Health and Care Excellence (NICE), and subsequent unplanned hospitalisation for HF and death.MethodsThis is a retrospective cohort study using data from general practices submitting records to the Clinical Practice Research Datalink. The cohort comprised patients diagnosed with HF during 2010–2013 and presenting to their general practitioners with breathlessness, fatigue or ankle swelling.Results13 897 patients were included in the study. Within the first 6 months, only 7% had completed the NICE-recommended pathway; another 18.6% had followed part of it (B-type natriuretic peptide testing and/or echocardiography, or specialist referral). Significant differences in hazards were seen in unadjusted analysis in favour of full or partial completion of the NICE-recommended pathway. Covariate adjustment attenuated the relations with death much more than those for HF admission. Compared with patients placed on the NICE pathway, treatment with HF medications had an HR of 1.16 (95% CI 1.05 to 1.28, p=0.003) for HF admission and 1.03 (95% CI 0.90 to 1.17, p= 0.674) for death. Patients who partially followed the NICE pathway had similar hazards to those who completed it. Patients on no pathway had the highest hazard for HF admission at 1.30 (95% 1.18 to 1.43, p<0.001) but similar hazard for death.ConclusionsPatients not put on at least some elements of the NICE-recommended pathway had significantly higher risk of HF admission but non-significant higher risk of death than other patients had.

scholarly journals Primary Care Consultations after Hospitalisation for Pneumonia: A Large Population-based Cohort Study

2020 ◽  
pp. BJGP.2020.0890
Author(s):  
Vadsala Baskaran ◽  
Fiona Pearce ◽  
Rowan H Harwood ◽  
Tricia McKeever ◽  
Wei Shen Lim
Keyword(s):  
Primary Care ◽  
Cohort Study ◽  
Large Population ◽  
Significant Proportion ◽  
Antibiotic Use ◽  
Population Based ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Respiratory Disorder ◽  
The Impact

Background: Up to 70% of patients report ongoing symptoms four weeks after hospitalisation for pneumonia, and the impact on primary care is poorly understood. Aim: To investigate the frequency of primary care consultations after hospitalisation for pneumonia, and the reasons for consultation. Design: Population-based cohort study. Setting: UK primary care database of anonymised medical records (Clinical Practice Research Datalink, CPRD) linked to Hospital Episode Statistics (HES), England. Methods: Adults with the first ICD-10 code for pneumonia (J12-J18) recorded in HES between July 2002-June 2017 were included. Primary care consultation within 30 days of discharge was identified as the recording of any medical Read code (excluding administration-related codes) in CPRD. Competing-risks regression analyses were conducted to determine the predictors of consultation and antibiotic use at consultation; death and readmission were competing events. Reasons for consultation were examined. Results: Of 56,396 adults, 55.9% (n=31,542) consulted primary care within 30 days of discharge. The rate of consultation was highest within 7 days (4.7 per 100 person-days). The strongest predictor for consultation was a higher number of primary care consultations in the year prior to index admission (adjusted sHR 8.98, 95% CI 6.42-12.55). The commonest reason for consultation was for a respiratory disorder (40.7%, n=12,840), 12% for pneumonia specifically. At consultation, 31.1% (n=9,823) received further antibiotics. Penicillins (41.6%, n=5,753) and macrolides (21.9%, n=3,029) were the commonest antibiotics prescribed. Conclusion: Following hospitalisation for pneumonia, a significant proportion of patients consulted primary care within 30 days, highlighting the morbidity experienced by patients during recovery from pneumonia.

scholarly journals Antibiotic prescribing for lower UTI in elderly patients in primary care and risk of bloodstream infection: a cohort study using electronic health records

2020 ◽  
Author(s):  
Laura Shallcross ◽  
Patrick Rockenschaub ◽  
Ruth Blackburn ◽  
Irwin Nazareth ◽  
Nick Freemantle ◽  
...  
Keyword(s):  
Primary Care ◽  
Bloodstream Infection ◽  
Census Data ◽  
Asymptomatic Bacteriuria ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Antibiotic Prescribing ◽  
The Public ◽  
Health Need ◽  
Community Onset

AbstractBackgroundResearch has questioned the safety of delaying or withholding antibiotics for suspected urinary tract infection (UTI) in older patients. We evaluated the association between antibiotic treatment for lower UTI and risk of bloodstream infection (BSI) in adults aged ≥65 years in primary care.MethodsWe analysed primary care records from patients aged ≥65 years in England with community-onset UTI using the Clinical Practice Research Datalink (2007-2015) linked to Hospital Episode Statistics and census data. The primary outcome was BSI within 60 days, comparing patients treated immediately with antibiotics and those not treated immediately.Findings147,334 patients were included representing 280,462 episodes of lower UTI. BSI occurred in 0·4% (1,025 / 244,963) of UTI episodes with immediate antibiotics versus 0·6% (228 / 35,499) of episodes without immediate antibiotics. The odds of BSI were equivalent in patients who were not treated with antibiotics immediately and those who were treated on the date of their UTI consultation (adjusted odds ratio aOR 1·13; 95%-CI: 0·97-1·31). However, delaying or withholding antibiotics was associated with increased odds of death in the subsequent 60 days (aOR 1·17; 95% CI: 1·09-1·26).InterpretationEvidence on the safety of delaying or withholding antibiotics in older adults with suspected UTI is conflicting. Given the prevalence of asymptomatic bacteriuria in this population, their risk of antibiotic-related side effects, and the public health need to tackle antibiotic resistance, we recommend a trial to address this uncertainty.

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