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Pharmacoepidemiology

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https://www.readbyqxmd.com/read/27906047/propranolol-and-survival-from-breast-cancer-a-pooled-analysis-of-european-breast-cancer-cohorts
#1
Chris R Cardwell, Anton Pottegård, Evelien Vaes, Hans Garmo, Liam J Murray, Chris Brown, Pauline A J Vissers, Michael O'Rorke, Kala Visvanathan, Deirdre Cronin-Fenton, Harlinde De Schutter, Mats Lambe, Des G Powe, Myrthe P P van Herk-Sukel, Anna Gavin, Søren Friis, Linda Sharp, Kathleen Bennett
BACKGROUND: Preclinical studies have demonstrated that propranolol inhibits several pathways involved in breast cancer progression and metastasis. We investigated whether breast cancer patients who used propranolol, or other non-selective beta-blockers, had reduced breast cancer-specific or all-cause mortality in eight European cohorts. METHODS: Incident breast cancer patients were identified from eight cancer registries and compiled through the European Cancer Pharmacoepidemiology Network...
December 1, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27905352/-future-perspective-of-pharmacoepidemiology-in-the-big-data-era-and-the-growth-of-information-sources
#2
Diego Macías Saint-Gerons, César de la Fuente Honrubia, Fernando de Andrés Trelles, Ferrán Catalá-López Catalá-López
The arrival of new drug into the market requires many years of previous research along with the need of continuous evaluation throughout the lifetime of the drug. This warrants pharmacoepidemiological research which may be defined as the study of the use and the effects of drugs in large populations. Nowadays this type of research seems more feasible thanks to the massive expansion of the information sources and data (e.g: clinical patient registries, electronic medical records). However there is a risk of information overload, fragmented evidence and given the enthusiasm aroused by the "Big Data", it must be emphasized that its nature is mainly observational, and therefore subject to bias and confusion...
December 1, 2016: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/27894223/-oncology-medications-prescription-in-a-cancer-service-appropriateness-to-clinical-practice-guidelines
#3
Valeria Palchik, María Luz Traverso, Marisel Colautti, Mariela Bianchi, Lucía Dolza, José María Catena, Mercedes Salamano
OBJECTIVE: To assess prescription of oncology medications in municipal public health network of Rosario for its appropriateness to clinical practice guidelines. METHODS: Descriptive pharmacoepidemiological study in adult patients in an Oncology Service between January and June 2012. Compliance requirements with clinical practice guidelines were evaluated. RESULTS: 51.8% of diagnoses had at least one prescription medication that did not match recommendation by at least one of the guides considered...
November 1, 2016: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/27891526/comparative-effectiveness-research-using-observational-data-active-comparators-to-emulate-target-trials-with-inactive-comparators
#4
Anders Huitfeldt, Miguel A Hernan, Mette Kalager, James M Robins
INTRODUCTION: Because a comparison of noninitiators and initiators of treatment may be hopelessly confounded, guidelines for the conduct of observational research often recommend using an "active" comparator group consisting of people who initiate a treatment other than the medication of interest. In this paper, we discuss the conditions under which this approach is valid if the goal is to emulate a trial with an inactive comparator. IDENTIFICATION OF EFFECTS: We provide conditions under which a target trial in a subpopulation can be validly emulated from observational data, using an active comparator that is known or believed to be inactive for the outcome of interest...
2016: EGEMS
https://www.readbyqxmd.com/read/27889931/new-use-of-prescription-drugs-prior-to-a-cancer-diagnosis
#5
Anton Pottegård, Jesper Hallas
PURPOSE: Cancers often have considerable induction periods. This confers a risk of reverse causation bias in studies of cancer risk associated with drug use, as early symptoms of a yet undiagnosed cancer might lead to drug treatment in the period leading up to the diagnosis. This bias can be alleviated by disregarding exposure for some time before the cancer diagnosis (lag time). We aimed at assessing the duration of lag time needed to avoid reverse causation bias. METHODS: We identified all Danish patients with incident cancer between 2000 and 2012 (n = 353 087)...
November 27, 2016: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/27880853/risk-of-stroke-after-herpes-zoster-evidence-from-a-german-self-controlled-case-series-study
#6
Tania Schink, Sigrid Behr, Kathrin Thöne, Hélène Bricout, Edeltraut Garbe
BACKGROUND: Herpes zoster (HZ) is caused by reactivation of the latent varicella-zoster virus (VZV). A severe complication of HZ is VZV vasculopathy which can result in ischemic or hemorrhagic stroke. The aims of our study were to assess the risk of stroke after the onset of HZ and to investigate the roles of stroke subtype, HZ location and the time interval between HZ onset and stroke. METHODS: A self-controlled case-series study was performed on a cohort of patients with incident stroke recorded in the German Pharmacoepidemiological Research Database (GePaRD), which covers about 20 million persons throughout Germany...
2016: PloS One
https://www.readbyqxmd.com/read/27860332/ezetimibe-use-costs-and-adverse-events-in-australia
#7
Samantha A Hollingworth, Remo Ostino, Michael C David, Jennifer H Martin, Susan E Tett
AIM: To analyse the subsidised use and reported adverse events of ezetimibe, used to lower cholesterol, in Australia over the 11 years following its inclusion on the Pharmaceutical Benefits Scheme (PBS) in 2004. METHODS: Pharmacoepidemiological analysis of dispensed prescriptions from Medicare Australia. Adverse event data were obtained from the Therapeutic Goods Administration. Use was measured by the defined daily dose (DDD) per 1,000 population per day for each calendar year...
November 17, 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/27859947/long-term-use-of-proton-pump-inhibitors-and-prevalence-of-disease-and-drug-related-reasons-for-gastroprotection-a-cross-sectional-population-based-study
#8
Susanna M Wallerstedt, Johan Fastbom, Johannes Linke, Sigurd Vitols
PURPOSE: To analyse the prevalence of long-term use of proton pump inhibitors (PPI) with respect to underlying diseases and drugs, and to find predictors for such treatment when an evident rationale for the PPI treatment is lacking. METHODS: The study cohort consisted of individuals, ≥65 years in 2010, residing in the Region Västra Götaland during 2005-2010. For individuals with and without long-term use of PPI in 2010, we investigated the prevalence of an underlying diagnosis, that is, an acid-related disease during the five preceding years, as well as concomitant long-term use of antiplatelet agents or cyclooxygenase inhibitors...
November 16, 2016: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/27821085/incidence-and-risk-factor-prevalence-of-community-acquired-pneumonia-in-adults-in-primary-care-in-spain-neumo-es-risk-project
#9
I Rivero-Calle, J Pardo-Seco, P Aldaz, D A Vargas, E Mascarós, E Redondo, J L Díaz-Maroto, M Linares-Rufo, M J Fierro-Alacio, A Gil, J Molina, D Ocaña, Federico Martinón-Torres
BACKGROUND: Community-acquired pneumonia (CAP) is a major cause of morbidity and mortality in adults even in developed countries. Several lifestyle factors and comorbidities have been linked to an increased risk, although their prevalence has not been well documented in the primary care setting. The aim of this study is to assess the incidence, risk factor and comorbid conditions distribution of CAP in adults in primary care in Spain. METHODS: Retrospective observational study in adults (>18 years-old) with CAP diagnosed and attended at primary care in Spain between 2009 and 2013, using the Computerized Database for Pharmacoepidemiological Studies in Primary Care (BIFAP)...
November 7, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27816317/pharmacological-treatment-strategies-in-unipolar-depression-in-european-tertiary-psychiatric-treatment-centers-a-pharmacoepidemiological-cross-sectional-multicenter-study
#10
Markus Dold, Alexander Kautzky, Lucie Bartova, Ulrich Rabl, Daniel Souery, Julien Mendlewicz, Stefano Porcelli, Alessandro Serretti, Joseph Zohar, Stuart Montgomery, Siegfried Kasper
This multicenter, cross-sectional study with retrospective assessment of treatment response evaluated the current prescription trends and pharmacological treatment strategies applied in European university/academic psychiatric centers in unipolar depression. Altogether, 1181 adult in- and outpatients with major depressive disorder (MDD) were enrolled in 9 academic sites in 8 European countries. Socio-demographic, clinical, and medication information were retrieved and the present symptom severity was assessed by the Montgomery and Åsberg Depression Rating Scale (MADRS)...
December 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27806253/best-practices-and-innovations-for-managing-codeine-misuse-and-dependence
#11
Ian J Norman, Michael Bergin, Charles D Parry, Marie Claire Van Hout
PURPOSE: Promoting and ensuring safe use of codeine containing medicines remains a public health issue given the rise in reporting of misuse and dependence particularly in countries where available over-the-counter (OTC). The aim of this unique study was to identify best practices in management of opioid abuse and dependence, particularly codeine, and innovations to meet challenges surrounding safe and compliant use, patient awareness-raising, reducing health harms and enhancing successful treatment of dependence...
July 2016: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27804174/monitoring-safety-in-a-phase-iii-real-world-effectiveness-trial-use-of-novel-methodology-in-the-salford-lung-study
#12
Sue Collier, Catherine Harvey, Jill Brewster, Nawar Diar Bakerly, Hanaa F Elkhenini, Roxana Stanciu, Claire Williams, Jacqui Brereton, John P New, John McCrae, Sheila McCorkindale, David Leather
BACKGROUND: The Salford Lung Study (SLS) programme, encompassing two phase III pragmatic randomised controlled trials, was designed to generate evidence on the effectiveness of a once-daily treatment for asthma and chronic obstructive pulmonary disease in routine primary care using electronic health records. OBJECTIVE: The objective of this study was to describe and discuss the safety monitoring methodology and the challenges associated with ensuring patient safety in the SLS...
November 1, 2016: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/27787616/evaluation-of-methods-to-estimate-missing-days-supply-within-pharmacy-data-of-the-clinical-practice-research-datalink-cprd-and-the-health-improvement-network-thin
#13
Kirsten J Lum, Craig W Newcomb, Jason A Roy, Dena M Carbonari, M Elle Saine, Serena Cardillo, Harshvinder Bhullar, Arlene M Gallagher, Vincent Lo Re
PURPOSE: The extent to which days' supply data are missing in pharmacoepidemiologic databases and effective methods for estimation is unknown. We determined the percentage of missing days' supply on prescription and patient levels for oral anti-diabetic drugs (OADs) and evaluated three methods for estimating days' supply within the Clinical Practice Research Datalink (CPRD) and The Health Improvement Network (THIN). METHODS: We estimated the percentage of OAD prescriptions and patients with missing days' supply in each database from 2009 to 2013...
October 27, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27780801/persistent-user-bias-in-case-crossover-studies-in-pharmacoepidemiology
#14
Jesper Hallas, Anton Pottegård, Shirley Wang, Sebastian Schneeweiss, Joshua J Gagne
Studying the effect of chronic medication exposure by means of a case-crossover design may result in an upward-biased odds ratio. In this study, our aim was to assess the occurrence of this bias and to evaluate whether it is remedied by including a control group (the case-time-control design). Using Danish data resources from 1995-2012, we conducted case-crossover and case-time-control analyses for 3 medications (statins, insulin, and thyroxine) in relation to 3 outcomes (retinal detachment, wrist fracture, and ischemic stroke), all with assumed null associations...
October 25, 2016: American Journal of Epidemiology
https://www.readbyqxmd.com/read/27780289/lessons-learned-on-the-design-and-the-conduct-of-post-authorisation-safety-studies-review-of-3%C3%A2-years-of-prac-oversight
#15
P Engel, M F Almas, M L De Bruin, K Starzyk, S Blackburn, N A Dreyer
AIM: To describe and characterise the first cohort of Post-Authorisation Safety Study (PASS) protocols reviewed under the recent European Pharmacovigilance Legislation. METHODS: A systematic approach was used to compile all publicly available information on PASS protocols and assessments submitted from July 2012 to July 2015 from Pharmacovigilance Risk Assessment Committee (PRAC) minutes, European Medicines Agency (EMA) and European Network of Pharmacovigilance and Pharmacoepidemiology (ENCePP) webpages...
October 25, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27753726/factors-associated-with-antidepressant-dosing-in-asia-findings-from-the-research-on-asian-psychotropic-prescription-study
#16
Kamini Rajaratnam, Yu-Tao Xiang, Adarsh Tripathi, Helen Fung Kum Chiu, Tian-Mei Si, Kok-Yoon Chee, Ajit Avasthi, Sandeep Grover, Mian-Yoon Chong, Hironori Kuga, Shigenobu Kanba, Yan-Ling He, Min-Soo Lee, Shu-Yu Yang, Pichet Udomratn, Roy Abraham Kallivayalil, Andi J Tanra, Margarita Maramis, Winston Wu-Dien Shen, Norman Sartorius, Ee-Heok Kua, Chay-Hoon Tan, Rathi Mahendran, Naotaka Shinfuku, Min Yi Sum, Ross J Baldessarini, Kang Sim
In this study, we sought to examine factors associated with dosing of antidepressants (ADs) in Asia. Based on reported data and clinical experience, we hypothesized that doses of ADs would be associated with demographic and clinical factors and would increase over time. This cross-sectional, pharmacoepidemiological study analyzed data collected within the Research Study on Asian Psychotropic Prescription Pattern for Antidepressants from 4164 participants in 10 Asian countries, using univariate and multivariate methods...
October 5, 2016: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/27752752/characteristics-and-drug-use-patterns-of-older-antidepressant-initiators-in-germany
#17
Kathrin Jobski, Niklas Schmedt, Bianca Kollhorst, Jutta Krappweis, Tania Schink, Edeltraut Garbe
PURPOSE: The purpose of this study was to investigate characteristics, drug use patterns, and predictors for treatment choice in older German patients initiating antidepressant (AD) treatment. METHODS: Using the German Pharmacoepidemiological Research Database, we identified a cohort of AD initiators aged at least 65 years between 2005 and 2011. Potential indications, co-morbidity, and co-medication as well as treatment patterns such as the duration of the first treatment episode were assessed...
October 18, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27747200/pharmacoepidemiological-data-from-drug-dispensing-charities-as-a-measure-of-health-patterns-in-a-population-not-assisted-by-the-italian-national-health-service
#18
Silvia Bini, Cesare Cerri, Antonello E Rigamonti, Pietro A Bertazzi, Gianfrancesco Fiorini, Silvano G Cella
We analysed drug dispensation by charitable organisations in a year time. Drugs were grouped according to the Anatomic Therapeutic Chemical classification and the amount dispensed was calculated with the system of the Daily Defined Dose (DDD) and expressed as DDD/1000 subjects/day. A number of 87,550 subjects were studied (13,308 Italians; 74,242 Immigrants). Though we noticed a great sesonal variability, the drugs most frequently dispensed were those for the respiratory, cardiovascular and gastrointestinal system and antibiotics, which is different from the rest of the Italian population and the immigrant population assisted by our National Health Service (NHS)...
August 19, 2016: Journal of Public Health Research
https://www.readbyqxmd.com/read/27735065/spironolactone-use-and-risk-of-incident-cancers-a-retrospective-matched-cohort-study
#19
Isla S Mackenzie, Steven V Morant, Li Wei, Alastair M Thompson, Thomas M MacDonald
AIMS: Spironolactone is widely used to treat heart failure, hypertension and liver disease with increased usage in recent years. Spironolactone has endocrine effects that could influence cancer risks and historical reports suggest possible links with increased risk of certain types of cancer. The aim of this study was to assess the effect of spironolactone exposure on cancer incidence. METHODS: A pharmacoepidemiological propensity score-matched cohort study was performed to assess the effect of spironolactone exposure on cancer incidence...
October 13, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27713825/frequency-and-trends-of-disease-modifying-antirheumatic-drug-dmard-use-in-germany
#20
Alexander M Fassmer, Edeltraut Garbe, Niklas Schmedt
The aim of this study was to analyze the population-based frequency of classic (c-) and biologic (b-) disease-modifying antirheumatic drug (DMARD) use over time, selected underlying indications and the specialty of the prescribing physicians in Germany. Based on the claims data of the German Pharmacoepidemiological Research Database (GePaRD), yearly cross-sectional studies were conducted from 2004 to 2011. The prevalence of DMARD use was calculated as the number of persons with at least one dispensation per 1000 persons stratified by sex and age...
October 2016: Pharmacology Research & Perspectives
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