Potential impact of missing outcome data on treatment effects in systematic reviews: imputation study.

abstract：:The numbers of patients being admitted to hospital with aortic aneurysms have increased recently. A study was carried out to try to find out whether this was a true increase in incidence or whether it could be attributable to more accurate diagnosis and better surgical techniques. From analyses of routine statistics i...

journal_title：BMJ (Clinical research ed.)

authors： Fowkes FG,Macintyre CC,Ruckley CV

更新日期：1989-01-07 00:00:00

abstract：OBJECTIVES:To examine how insurance companies assess proposals for life assurance from applicants with raised cholesterol concentrations and to determine the excess mortality rating applied. DESIGN:Survey of 49 companies underwriting term life assurance. SETTING:United Kingdom. SUBJECTS:Four fictional men aged 30 se...

journal_title：BMJ (Clinical research ed.)

authors： Neil HA,Mant D

更新日期：1991-04-13 00:00:00

abstract：OBJECTIVE:To investigate a reported association between dental disease and risk of coronary heart disease. SETTING:National sample of American adults who participated in a health examination survey in the early 1970s. DESIGN:Prospective cohort study in which participants underwent a standard dental examination at bas...

journal_title：BMJ (Clinical research ed.)

authors： DeStefano F,Anda RF,Kahn HS,Williamson DF,Russell CM

更新日期：1993-03-13 00:00:00

abstract：OBJECTIVE:To determine the global capacity (availability, accessibility, quality, and affordability) to deliver kidney replacement therapy (dialysis and transplantation) and conservative kidney management. DESIGN:International cross sectional survey. SETTING:International Society of Nephrology (ISN) survey of 182 cou...

journal_title：BMJ (Clinical research ed.)

authors： Bello AK,Levin A,Lunney M,Osman MA,Ye F,Ashuntantang GE,Bellorin-Font E,Benghanem Gharbi M,Davison SN,Ghnaimat M,Harden P,Htay H,Jha V,Kalantar-Zadeh K,Kerr PG,Klarenbach S,Kovesdy CP,Luyckx VA,Neuen BL,O'Donoghue D

更新日期：2019-10-31 00:00:00

abstract：OBJECTIVE:To determine whether abnormal results for liver function tests are investigated in primary care and findings on full investigation. DESIGN:Retrospective audit and prospective clinical investigation. SETTING:University hospital and surrounding general practices serving around 330 000 people. SUBJECTS:Adults...

journal_title：BMJ (Clinical research ed.)

authors： Sherwood P,Lyburn I,Brown S,Ryder S

更新日期：2001-02-03 00:00:00

abstract：OBJECTIVE:To assess the association between macrolide antibiotics prescribing during pregnancy and major malformations, cerebral palsy, epilepsy, attention deficit hyperactivity disorder, and autism spectrum disorder in children. DESIGN:Population based cohort study. SETTING:The UK Clinical Practice Research Datalink...

journal_title：BMJ (Clinical research ed.)

authors： Fan H,Gilbert R,O'Callaghan F,Li L

更新日期：2020-02-19 00:00:00

abstract：OBJECTIVE:To examine the distribution of patterns of macronutrient density in relation to obesity. DESIGN:Cross sectional. SETTING:Denmark. SUBJECTS:323 men and women aged 35-65 years, selected randomly from a larger population sample of Danish adults. MAIN OUTCOME MEASURE:Bias in dietary reporting of energy and pr...

journal_title：BMJ (Clinical research ed.)

authors： Heitmann BL,Lissner L

更新日期：1995-10-14 00:00:00

abstract：OBJECTIVE:To compare neonatal mortality and morbidity in term infants presenting by the breech and delivered vaginally or by caesarean section. DESIGN:Population based comparison of outcomes. Data derived from the St Mary's maternity information system. SETTING:North West Thames Regional Health Authority, 1988-90. S...

journal_title：BMJ (Clinical research ed.)

authors： Thorpe-Beeston JG,Banfield PJ,Saunders NJ

更新日期：1992-09-26 00:00:00

abstract：OBJECTIVES:To explore general practitioners' reasons for recent changes in their prescribing behaviour. DESIGN:Qualitative analysis of semistructured interviews. SETTING:General practice in south east London. SUBJECTS:A heterogeneous sample of 18 general practitioners. RESULTS:Interviewees were able to identify bet...

journal_title：BMJ (Clinical research ed.)

authors： Armstrong D,Reyburn H,Jones R

更新日期：1996-04-13 00:00:00

abstract：OBJECTIVE:To re-evaluate the causal effect of interpregnancy interval on adverse birth outcomes, on the basis that previous studies relying on between mother comparisons may have inadequately adjusted for confounding by maternal risk factors. DESIGN:Retrospective cohort study using conditional logistic regression (mat...

journal_title：BMJ (Clinical research ed.)

authors： Ball SJ,Pereira G,Jacoby P,de Klerk N,Stanley FJ

更新日期：2014-07-23 00:00:00

abstract：OBJECTIVES:To examine the individual and combined associations of unhealthy behaviours (low/intermediate physical activity, consuming fruit and vegetables less than once a day, current smoking/short term ex-smoking, never/former/heavy alcohol drinking), assessed at start of follow-up, with hazard of disability among ol...

journal_title：BMJ (Clinical research ed.)

authors： Artaud F,Dugravot A,Sabia S,Singh-Manoux A,Tzourio C,Elbaz A

更新日期：2013-07-23 00:00:00

abstract：OBJECTIVE:To evaluate the cost utility of interferon beta-1b in secondary progressive multiple sclerosis. DESIGN:Population based cost utility model (healthcare perspective). Data on use of health services were obtained from case records and routine morbidity data and utility values from a EuroQol survey. Local and pu...

journal_title：BMJ (Clinical research ed.)

authors： Forbes RB,Lees A,Waugh N,Swingler RJ

更新日期：1999-12-11 00:00:00

abstract：OBJECTIVES:To evaluate current processes by which young children presenting with a febrile illness but suspected of having serious bacterial infection are diagnosed and treated, and to develop and test a multivariable model to distinguish serious bacterial infections from self limiting non-bacterial illnesses. Design T...

journal_title：BMJ (Clinical research ed.)

authors： Craig JC,Williams GJ,Jones M,Codarini M,Macaskill P,Hayen A,Irwig L,Fitzgerald DA,Isaacs D,McCaskill M

更新日期：2010-04-20 00:00:00

abstract：OBJECTIVES:To determine whether informed consent introduces selection bias in prospective observational studies using data from medical records, and consent rates for such studies. DESIGN:Systematic review. DATA SOURCES:Embase, Medline, and the Cochrane Library up to March 2008, reference lists from pertinent article...

journal_title：BMJ (Clinical research ed.)

authors： Kho ME,Duffett M,Willison DJ,Cook DJ,Brouwers MC

更新日期：2009-03-12 00:00:00

abstract：OBJECTIVES:To assess the effects of treatments for non-metastatic invasive squamous cell carcinoma (SCC) of the skin using evidence from observational studies, given the paucity of evidence from randomised controlled trials. DESIGN:Systematic review of observational studies. DATA SOURCES:Medline, Embase, to December ...

journal_title：BMJ (Clinical research ed.)

authors： Lansbury L,Bath-Hextall F,Perkins W,Stanton W,Leonardi-Bee J

更新日期：2013-11-04 00:00:00

abstract：OBJECTIVE:To determine the prevalence of sexually transmitted diseases in patients with normal and abnormal cervical smears. DESIGN:A prospective study of asymptomatic women with normal cervical smears attending their general practitioner and newly referred patients with abnormal smears attending a colposcopy clinic. ...

journal_title：BMJ (Clinical research ed.)

authors： Smith JR,Murdoch J,Carrington D,Frew CE,Dougall AJ,MacKinnon H,Baillie D,Byford DM,Forrest CA,Davis JA

更新日期：1991-01-12 00:00:00

abstract：OBJECTIVES:Confirmation of breakthroughs in three different malaria chemoprophylactic regimens (chloroquine 300 mg weekly and proguanil 100 mg daily; chloroquine 300 mg weekly and proguanil 200 mg daily; proguanil 200 mg daily) and assessment of compliance. DESIGN:Prospective, randomised multicentre trial. SETTING:Fi...

journal_title：BMJ (Clinical research ed.)

authors： Wetsteyn JC,de Geus A

更新日期：1993-10-23 00:00:00

abstract：OBJECTIVE:To estimate changes in the risk of autism and assess the relation of autism to the mumps, measles, and rubella (MMR) vaccine. DESIGN:Time trend analysis of data from the UK general practice research database (GPRD). SETTING:General practices in the United Kingdom. SUBJECTS:Children aged 12 years or younger...

journal_title：BMJ (Clinical research ed.)

authors： Kaye JA,del Mar Melero-Montes M,Jick H

更新日期：2001-02-24 00:00:00

abstract：:In most European countries health has been shown to be linked to social circumstances--gradients in health status have persisted for decades, despite major changes in the principal causes of death. In central and eastern Europe life expectancy has stagnated since the mid-60s, whereas in the West it has increased; but ...

journal_title：BMJ (Clinical research ed.)

authors： Power C

更新日期：1994-04-30 00:00:00

abstract：OBJECTIVE:To compare the effects of treatments for coronavirus disease 2019 (covid-19). DESIGN:Living systematic review and network meta-analysis. DATA SOURCES:WHO covid-19 database, a comprehensive multilingual source of global covid-19 literature, up to 3 December 2020 and six additional Chinese databases up to 12 ...

journal_title：BMJ (Clinical research ed.)

authors： Siemieniuk RA,Bartoszko JJ,Ge L,Zeraatkar D,Izcovich A,Kum E,Pardo-Hernandez H,Rochwerg B,Lamontagne F,Han MA,Liu Q,Agarwal A,Agoritsas T,Chu DK,Couban R,Darzi A,Devji T,Fang B,Fang C,Flottorp SA,Foroutan F,Ghad

更新日期：2020-07-30 00:00:00

abstract：:I have attempted to adopt the perspective of a patient--albeit one with a rather atypical background--to explore what I want from health research and researchers. This has left me with the impression that health researchers could serve the interests of the public more effectively in a variety of ways, and that they wo...

journal_title：BMJ (Clinical research ed.)

authors： Chalmers I

更新日期：1995-05-20 00:00:00

abstract：OBJECTIVES:To examine the reporting characteristics and methodological details of randomised trials indexed in PubMed in 2000 and 2006 and assess whether the quality of reporting has improved after publication of the Consolidated Standards of Reporting Trials (CONSORT) Statement in 2001. DESIGN:Comparison of two cross...

journal_title：BMJ (Clinical research ed.)

authors： Hopewell S,Dutton S,Yu LM,Chan AW,Altman DG

更新日期：2010-03-23 00:00:00

abstract：:The studyA Rodger, V Cambiano, T Bruun, et al. Risk of HIV transmission through condomless sex in serodifferent gay couples with the HIV-positive partner taking suppressive antiretroviral therapy (PARTNER): final results of a multicentre, prospective, observational study. Lancet 2019;393:2428-38.This project was funde...

journal_title：BMJ (Clinical research ed.)

authors： Cook R,Davidson P,clinical adviser,.,Martin R,NIHR Dissemination Centre.

更新日期：2019-08-27 00:00:00

abstract：OBJECTIVE:To identify the factors associated with diabetic ketoacidosis at diagnosis of type 1 diabetes in children and young adults. DESIGN:Systematic review. DATA SOURCES:PubMed, EMBASE, Web of Science, Scopus, and Cinahl and article reference lists. STUDY SELECTION:Cohort studies including unselected groups of ch...

journal_title：BMJ (Clinical research ed.)

authors： Usher-Smith JA,Thompson MJ,Sharp SJ,Walter FM

更新日期：2011-07-07 00:00:00

abstract：OBJECTIVE:To gain detailed understanding of influences on smoking behaviour in Bangladeshi and Pakistani communities in the United Kingdom to inform the development of effective and culturally acceptable smoking cessation interventions. DESIGN:Qualitative study using community participatory methods, purposeful samplin...

journal_title：BMJ (Clinical research ed.)

authors： Bush J,White M,Kai J,Rankin J,Bhopal R

更新日期：2003-05-03 00:00:00

abstract：OBJECTIVE:To independently evaluate the impact of the second phase of the Health Foundation's Safer Patients Initiative (SPI2) on a range of patient safety measures. Design A controlled before and after design. Five substudies: survey of staff attitudes; review of case notes from high risk (respiratory) patients in med...

journal_title：BMJ (Clinical research ed.)

authors： Benning A,Dixon-Woods M,Nwulu U,Ghaleb M,Dawson J,Barber N,Franklin BD,Girling A,Hemming K,Carmalt M,Rudge G,Naicker T,Kotecha A,Derrington MC,Lilford R

更新日期：2011-02-03 00:00:00

abstract：OBJECTIVE:To compare characteristics of patients and outcomes after elective surgery in independent sector treatment centres (ISTCs) and NHS providers. DESIGN:Follow-up study with outcomes reported by patients three to six months after surgery. SETTING:25 ISTCs and 72 NHS providers in England. Population Consecutive ...

journal_title：BMJ (Clinical research ed.)

authors： Chard J,Kuczawski M,Black N,van der Meulen J,POiS Audit Steering Committee.

更新日期：2011-10-19 00:00:00

abstract：:An association between vasectomy and the development of testicular tumors, and the importance of testicular examinations both before and after a vasectomy is discussed. Patients diagnosed with testicular tumors within the last ten years were examined at Bangour General Hospital in Scotland. From 1977-87, 37 patients...

journal_title：BMJ (Clinical research ed.)

authors： Cale AR,Farouk M,Prescott RJ,Wallace IW

更新日期：1990-02-10 00:00:00

abstract：:A random sample of 133 elderly patients who had an unplanned readmission to a district general hospital within 28 days of discharge from hospital was studied and compared with a matched control sample of patients who were not readmitted. The total group was drawn from all specialties in the hospital, and by interviewi...

journal_title：BMJ (Clinical research ed.)

authors： Williams EI,Fitton F

更新日期：1988-09-24 00:00:00

abstract：OBJECTIVE:To examine the association between obstetric epidural anaesthesia and subsequent long term problems. DESIGN:Postal questionnaire on health problems after childbirth linked to maternity case note data. SETTING:Maternity hospital in Birmingham. SUBJECTS:11701 women who delivered their most recent child durin...

journal_title：BMJ (Clinical research ed.)

authors： MacArthur C,Lewis M,Knox EG

更新日期：1992-05-16 00:00:00