Generating and confirming hypotheses.

Abstract:

:Dr. Walker asserts that a hypothesis always can be tested using the same data source that generated the data if the test data are independent of the data generating the hypothesis. One way to do this is to use part of the totality of data to generate the hypothesis and the other to test the hypothesis. The validity of this assertion depends on what one means by 'independent'. This note addresses the logical and statistical implications of Dr. Walker's assertion. The key conclusion is that what constitutes 'independent' data has to be considered carefully, and that hypothesis-generating and test data from the same data source generally can not be considered 'independent'.

authors

Gould AL

doi

10.1002/pds.1928

subject

Has Abstract

pub_date

2010-05-01 00:00:00

pages

533-6

issue

5

eissn

1053-8569

issn

1099-1557

journal_volume

19

pub_type

评论,杂志文章
  • General practitioners' prescribing patterns for the elderly in a province of Iran.

    abstract:PURPOSE:To determine prescribing patterns by general physicians working in primary care (GPs) in Iran for the elderly and the prevalence of inappropriate prescribing. METHODS:We collected information about prescribed medicines for 10% of patients in primary care aged 65 years or above in six cities in one province dur...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.2106

    authors: Ghadimi H,Esmaily HM,Wahlstrom R

    更新日期:2011-05-01 00:00:00

  • Does use of tetracyclic antidepressant-mirtazapine reduce cancer risk in depression patients?

    abstract:PURPOSE:We conducted a nested case-control study to evaluate the association between risk of cancer and mirtazapine use in depression patients in Taiwan. METHODS:We obtained data from the Taiwan National Health Insurance Research Database to conduct a population-based nested case-control study. The study cohort includ...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3523

    authors: Sun LM,Lin MC,Liang JA,Chang YJ,Chang SN,Sung FC,Muo CH,Kao CH

    更新日期:2013-12-01 00:00:00

  • Using claims data to predict dependency in activities of daily living as a proxy for frailty.

    abstract:PURPOSE:Estimating drug effectiveness and safety among older adults in population-based studies using administrative health care claims can be hampered by unmeasured confounding as a result of frailty. A claims-based algorithm that identifies patients likely to be dependent, a proxy for frailty, may improve confounding...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3719

    authors: Faurot KR,Jonsson Funk M,Pate V,Brookhart MA,Patrick A,Hanson LC,Castillo WC,Stürmer T

    更新日期:2015-01-01 00:00:00

  • Pattern of in-hospital changes in drug use in the older people from 2010 to 2016.

    abstract:PURPOSE:To assess the pattern of in-hospital changes in drug use in older patients from 2010 to 2016. METHODS:People aged 65 years or more acutely hospitalized in those internal medicine and geriatric wards that did continuously participate to the REgistro POliterapie Società Italiana di Medicina Interna register from...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4330

    authors: Franchi C,Ardoino I,Nobili A,Pasina L,Mannucci PM,Marengoni A,Perticone F,REPOSI investigators.

    更新日期:2017-12-01 00:00:00

  • The choice of pharmacoeconomic study design during drug development--part 2.

    abstract::Pharmaceutical manufacturers are faced with the challenge of when and how to conduct pharmacoeconomic (PE) evaluations to satisfy formulary decision-makers. To illustrate the usefulness of decision analysis for strategic planning in drug development, a model was created to compare the cost-benefit of three PE design o...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/(SICI)1099-1557(199711/12)6:6<399::AID-PDS

    authors: Ungar W

    更新日期:1997-11-01 00:00:00

  • Correcting hazard ratio estimates for outcome misclassification using multiple imputation with internal validation data.

    abstract:OBJECTIVE:Outcome misclassification may occur in observational studies using administrative databases. We evaluated a two-step multiple imputation approach based on complementary internal validation data obtained from two subsamples of study participants to reduce bias in hazard ratio (HR) estimates in Cox regressions....

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4223

    authors: Ni J,Leong A,Dasgupta K,Rahme E

    更新日期:2017-08-01 00:00:00

  • Characteristics and trends of low-dose quetiapine use in two western state Medicaid programs.

    abstract:PURPOSE:Medicaid programs are concerned about inappropriate, potentially hazardous, and costly off-label use of second-generation antipsychotics (SGAs). Several states are exploring policies aimed at managing low-dose quetiapine, commonly prescribed for off-label conditions. This study aimed to characterize longitudina...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3538

    authors: Hartung DM,Zerzan J,Yamashita T,Tong S,Morden NE,Libby AM

    更新日期:2014-01-01 00:00:00

  • Prescription patterns of antiepileptic drugs in young women: development of a tool to distinguish between epilepsy and psychiatric disorders.

    abstract:BACKGROUND:Antiepileptic drugs (AEDs) are also prescribed for therapeutic indications other than epilepsy (EPI), namely, psychiatric disorders (PSY). Our aim was to develop an algorithm able to distinguish between EPI and PSY among childbearing age women based on differences in AED exposure in these patient groups. ME...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3984

    authors: Naldi I,Piccinni C,Mostacci B,Renzini J,Accetta G,Bisulli F,Tappatà M,Piazza A,Pagano P,Bianchi S,D'Alessandro R,Tinuper P,Poluzzi E,ESPEA (Emilia-Romagna Study on Pregnancy and Exposure to Antiepileptic drugs) Group.

    更新日期:2016-07-01 00:00:00

  • Psychotropic drugs and risk of burn injury in individuals with mental illness: a 10-year population-based case-control study.

    abstract:PURPOSE:We aimed to investigate the association between psychotropic treatment and risk of burn injury in individuals with mental illness. METHODS:A nested case-control study was conducted by using the National Health Insurance Research Database in Taiwan. A total of 3187 cases with burn injury under International Cla...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3995

    authors: Chang CM,Wu KY,Chiu YW,Wu HT,Tsai YT,Chau YL,Tsai HJ

    更新日期:2016-08-01 00:00:00

  • Exposure to reactive intermediate-inducing drugs during pregnancy and the incident use of psychotropic medications among children.

    abstract:PURPOSE:Our study aimed to investigate the association between prenatal exposure to reactive intermediate (RI)-inducing drugs and the initiation of psychotropic medications among children. METHODS:We designed a cohort study using a pharmacy prescription database. Pregnant women were considered exposed when they receiv...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4161

    authors: Tran YH,Groen H,Bergman JE,Hak E,Wilffert B

    更新日期:2017-03-01 00:00:00

  • Population-based incidence of diabetic ketoacidosis in type 2 diabetes: medical claims data analysis in Japan.

    abstract:PURPOSE:Determination of the incidence rate of diabetic ketoacidosis (DKA) in type 2 diabetes mellitus (T2DM) is urgent, in response to the safety issue with use of the glucose lowering drugs, sodium-glucose cotransporter-2 inhibitors, and DKA. METHODS:We extracted data of adult patients with T2DM from a medical claim...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4271

    authors: Takeuchi M,Kawamura T,Sato I,Kawakami K

    更新日期:2018-01-01 00:00:00

  • Trends in the long-term use of benzodiazepine anxiolytics and hypnotics: A national register study for 2006 to 2014.

    abstract:PURPOSE:Long-term benzodiazepine (BZD) treatment continues to be a debated topic. Because individual BZDs have different clinical profiles, we assessed the nationwide trends of long-term BZD use at active substance level during years 2006 to 2014. METHODS:This study covered all reimbursed BZD purchases (n = 408 572-52...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4551

    authors: Kurko T,Saastamoinen LK,Tuulio-Henriksson A,Taiminen T,Tiihonen J,Airaksinen M,Hietala J

    更新日期:2018-06-01 00:00:00

  • Description of hypersensitivity adverse events following administration of heparin that was potentially contaminated with oversulfated chondroitin sulfate in early 2008.

    abstract:PURPOSE:To characterize the nature of a heparin contaminant's clinical effects in cases reported to the Adverse Event Reporting System (AERS). The FDA received reports of heparin-associated adverse events (AEs) starting in late 2007-early 2008 during a national investigation of allergic-type events. The investigation i...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.1991

    authors: McMahon AW,Pratt RG,Hammad TA,Kozlowski S,Zhou E,Lu S,Kulick CG,Mallick T,Dal Pan G

    更新日期:2010-09-01 00:00:00

  • Evaluation of a program of integrated care to reduce recurrent osteoporotic fractures.

    abstract:PURPOSE:To evaluate the outcomes of patients participating in a program of integrated care for osteoporosis in terms of medication supply, fracture incidence and expenses. METHODS:Outcomes were assessed from secondary data provided by the AOK PLUS health insurance for 2455 participants of the program and the same numb...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3399

    authors: Goltz L,Degenhardt G,Maywald U,Kirch W,Schindler C

    更新日期:2013-03-01 00:00:00

  • Prevalence of purchase of antihypertensive and serum lipid-reducing drugs in Sweden--individual data from national registers.

    abstract:PURPOSE:To determine the prevalence of purchase of prescribed antihypertensive and/or serum lipid-reducing pharmaceutical preparations among different age groups, from the age of 45, in the Swedish population. Further, to calculate the percentage of the population, from the age of 60, who purchased these pharmaceutical...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.1515

    authors: Silwer L,Lundborg CS,Petzold M

    更新日期:2008-01-01 00:00:00

  • An algorithm to derive a numerical daily dose from unstructured text dosage instructions.

    abstract:PURPOSE:The General Practice Research Database (GPRD) is a database of longitudinal patient records from general practices in the United Kingdom. It is an important data source for pharmacoepidemiology studies, but until now it has been tedious to calculate the daily dose and duration of exposure to drugs prescribed. T...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.1151

    authors: Shah AD,Martinez C

    更新日期:2006-03-01 00:00:00

  • How do pharmaceutical companies handle consumer adverse drug reaction reports? An overview based on a survey of French drug safety managers and officers.

    abstract::It is surprising to see how consumer Adverse Drug Reaction (ADR) reports have been continuously increasing for the last few years in Europe. This probably results from the influence of United States (US) market where the patients feels justified in telephoning the pharmaceutical companies directly with queries regardi...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.650

    authors: Fleuranceau-Morel P

    更新日期:2002-01-01 00:00:00

  • Use of a multi-state model in a claims database: illustration with methadone.

    abstract:PURPOSE:In pharmacoepidemiology, one of the main concerns is analysis of drug exposure time. However, in real-life settings, patient's behavior is complex and characterized by drug exposure dynamics. Multi-state models allow assessing the probabilities of various patterns, instead of just continuous use and/or disconti...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3835

    authors: Boucherie Q,Pauly V,Frauger E,Thirion X,Pradel V,Micallef J

    更新日期:2015-09-01 00:00:00

  • National trends in long-term use of prescription opioids.

    abstract:PURPOSE:This study examined recent trends and correlates of prescription opioid use and long-term use in the United States. METHODS:Data were from 47 356 adult participants of National Health and Nutrition Survey from 1999-2000 to 2013-2014. Participants were asked about prescription medications used in the past 30 da...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4278

    authors: Mojtabai R

    更新日期:2018-05-01 00:00:00

  • Market withdrawal of new molecular entities approved in the United States from 1980 to 2009.

    abstract:PURPOSE:Economic factors, market dynamics, and safety issues are largely responsible for decisions to withdraw pharmaceutical products from the market. In this study, new molecular entities (NMEs) approved by the Food and Drug Administration (FDA) were examined in the USA from 1980 to 2009. METHODS:Data were obtained ...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.2155

    authors: Qureshi ZP,Seoane-Vazquez E,Rodriguez-Monguio R,Stevenson KB,Szeinbach SL

    更新日期:2011-07-01 00:00:00

  • In utero beta-2-adrenergic agonists exposure and risk of epilepsy: A Danish nationwide population-based cohort study.

    abstract:PURPOSE:To examine the association between maternal use of beta-2-adrenergic agonists (β2AAs) and the risk of epilepsy in offspring. METHODS:A nationwide retrospective cohort study was performed based on Danish registries. Children of mothers who used β2AAs during pregnancy were allocated to the exposed group and othe...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4648

    authors: Chen J,Liang H,Miao M,Su X,Yang F,Thomsen RW,Yuan W,Li J

    更新日期:2018-11-01 00:00:00

  • Bayesian hierarchical methods in the detection of potentially teratogenic first-trimester medications.

    abstract:PURPOSE:Bayesian hierarchical models (BHMs) have been used to identify adverse drug reactions, allowing information sharing amongst adverse reactions and drugs expected to have similar properties. This study evaluated the use of BHMs in the routine signal detection analyses of potential first-trimester teratogens, wher...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4948

    authors: Cavadino A,Prieto-Merino D,Morris JK

    更新日期:2020-03-01 00:00:00

  • Use of granulocyte colony-stimulating factor (G-CSF) and outcome in patients with non-chemotherapy agranulocytosis.

    abstract:PURPOSE:The use of granulocyte colony-stimulating factor (G-CSF) in the treatment of non-chemotherapy drug- induced agranulocytosis is controversial. We aimed at assessing the effect of G-CSF on the duration of agranulocytosis. METHODS:To assess the effect of G-CSF on the duration of agranulocytosis, a Cox proportiona...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.1542

    authors: Ibáñez L,Sabaté M,Ballarín E,Puig R,Vidal X,Laporte JR,Agranulocytosis and Aplastic Anaemia Study Group of Barcelona.

    更新日期:2008-03-01 00:00:00

  • Cardiac mortality in users of olmesartan, other angiotensin-receptor blockers and angiotensin-converting enzyme inhibitors.

    abstract:PURPOSE:Clinical trials of olmesartan for prevention of progression of renal disease in patients with diabetes showed renal protection but an unexpected imbalance in cardiac deaths. The US Food and Drug Administration requested from the manufacturer a cohort study of olmesartan, other angiotensin-receptor blockers (ARB...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.3558

    authors: Walker AM,Liang C,Clifford CR,Parker C,Feldman A

    更新日期:2014-04-01 00:00:00

  • Safety profile of oseltamivir during the 2009 influenza pandemic.

    abstract:PURPOSE:This study evaluated the safety of oseltamivir during the 2009 influenza pandemic. METHODS:Case reports were obtained from the Roche safety database. The incidence of adverse events (AEs) during the pandemic (1 May 2009 to 31 December 2009) was compared with that beforehand (during previous influenza seasons) ...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.2136

    authors: Donner B,Bader-Weder S,Schwarz R,Peng MM,Smith JR,Niranjan V

    更新日期:2011-05-01 00:00:00

  • A large simple clinical trial prototype for assessment of OTC drug effects using patient-reported data.

    abstract:PURPOSE:Innovative methods are needed to assess risks related to treatment for common medical conditions, where therapy is usually patient-directed or over-the-counter (OTC), and where tolerability, i.e. patient experienced events, may affect patterns of use. A large-scale, blinded, randomised trial was conducted to co...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 临床试验,杂志文章,多中心研究,随机对照试验

    doi:10.1002/pds.1083

    authors: Van Ganse E,Jones JK,Moore N,Parc JM,Wall R,Schneid H

    更新日期:2005-04-01 00:00:00

  • Assessing strength of evidence for regulatory decision making in licensing: What proof do we need for observational studies of effectiveness?

    abstract::Before a medicine can be recommended for a marketing authorization research must be provided to regulators that convincingly supports the benefit-risk of the product in the claimed indication. The established criteria for such research are usually expressed in terms of evidence from randomized controlled trials (RCT)....

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.5005

    authors: Slattery J,Kurz X

    更新日期:2020-10-01 00:00:00

  • Media attention and the influence on the reporting odds ratio in disproportionality analysis: an example of patient reporting of statins.

    abstract:AIM:To study the influence of media attention about statins and ADRs on the level of disproportionality, expressed as the reporting odds ratio (ROR) for statins in the Lareb database, based on patients' reports. METHODS:Patient reports about statins, before and after the broadcast of a consumer programme about statins...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.1865

    authors: van Hunsel F,van Puijenbroek E,de Jong-van den Berg L,van Grootheest K

    更新日期:2010-01-01 00:00:00

  • The knowledge, perceptions and practice of pharmacovigilance amongst community pharmacists in Lagos state, south west Nigeria.

    abstract:PURPOSE:Community Pharmacists both have an important responsibility in monitoring the ongoing safety of medicines and are widely accessible to do it. This study aims to investigate the knowledge, perceptions and practice of Pharmacovigilance amongst community pharmacists in Lagos State, South West Nigeria METHODS:A cr...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.2021

    authors: Oreagba IA,Ogunleye OJ,Olayemi SO

    更新日期:2011-01-01 00:00:00

  • Prescriber and pharmacy variation in patient adherence to five medication classes measured using implementation during persistent episodes.

    abstract:PURPOSE:The objective of this study was to determine the fraction of variance in patient-level medication adherence accounted for by prescribers and pharmacies. METHODS:We used prescription drug claims paid between January 2010 and July 2011 to a national pharmacy benefits manager to define implementation during persi...

    journal_title:Pharmacoepidemiology and drug safety

    pub_type: 杂志文章

    doi:10.1002/pds.4025

    authors: Genberg BL,Rogers WH,Lee Y,Qato DM,Dore DD,Hutchins DS,Brennan T,Matlin OS,Wilson IB

    更新日期:2016-07-01 00:00:00