Abstract:
OBJECTIVE:To examine whether, according to the conclusions of a 2000 systematic review with meta-analysis on interventions to prevent pain from propofol injection that provided a research agenda to guide further research on the topic, subsequently published trials were more often optimally blinded, reported on children, and used the most efficacious intervention as comparator; and to check whether the number of new trials published each year had decreased and whether the designs of trials that cited the review differed from those that did not. STUDY DESIGN:Systematic review comparing old trials (published before, and included in, the review) with new trials (published afterwards). DATA SOURCES:Medline, Cochrane, Embase, and bibliographies to January 2013. ELIGIBILITY CRITERIA FOR STUDY SELECTION:Randomised studies testing any intervention to prevent pain from propofol injection in humans. RESULTS:136 new trials (19,778 patients) were retrieved. Compared with the 56 old trials (6264 patients), the proportion of optimally blinded trials had increased from 10.7% to 38.2% (difference 27.5%, 95% confidence interval 16.0% to 39.0%, P<0.001), and the proportion of trials that used the most efficacious intervention as comparator had increased from 12.5% to 27.9% (difference 15.4%, 4.0% to 26.9%, P=0.022). The proportion of paediatric trials had increased from 5.4% to 12.5%, although this was not significant (difference 7.1%, -1.0% to 15.2%, P=0.141). The number of new trials published each year was significantly higher (median number/year 12 (range 7-20) v 2.5 (0-9), P<0.001) with no obvious decreasing trend. 72.8% (n=99) of the new trials cited the review, with their designs similar to trials not citing the review. Only 36.0% (n=49) of the new trials were considered clinically relevant since they used the most efficacious intervention as comparator or included a paediatric population. CONCLUSIONS:The impact of the systematic review on the design of subsequent research was low. There was an improvement in the reporting of optimal blinding procedures and a tendency towards an increase in the proportion of paediatric trials. The most efficacious intervention was more often chosen as comparator but remained marginally used, and the number of trials published per year had not decreased. The use of systematic reviews should be encouraged to inform rational, and thus ethical, trial design and improve the relevance of new research.
journal_name
BMJjournal_title
BMJ (Clinical research ed.)authors
Habre C,Tramèr MR,Pöpping DM,Elia Ndoi
10.1136/bmj.g5219subject
Has Abstractpub_date
2014-08-26 00:00:00pages
g5219eissn
0959-8138issn
1756-1833journal_volume
348pub_type
杂志文章,评审abstract::The rapid aging of populations in developing countries as compared to those in the developed world has implications for medical training in these places. Moreover, the growing globalization of employment for many health professionals means that demographic shifts have implications for the training of health professio...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,评审
doi:10.1136/bmj.319.7221.1358
更新日期:1999-11-20 00:00:00
abstract:OBJECTIVE:To determine whether maternal smoking during pregnancy causes impairment in growth after birth. DESIGN:Longitudinal study. SETTING:Six medical university centres of six towns of north, central, and south Italy. SUBJECTS:12,987 babies (10,238 born from non-smoking mothers, 2276 from mothers smoking one to n...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.310.6982.768
更新日期:1995-03-25 00:00:00
abstract:OBJECTIVE:To investigate the association of enteroviruses with motor neurone disease, also known as amyotrophic lateral sclerosis. DESIGN:Analysis by enterovirus polymerase chain reaction of wax embedded material from spinal cords taken at necropsy from subjects with motor neurone disease and from age and sex matched ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.308.6943.1541
更新日期:1994-06-11 00:00:00
abstract:OBJECTIVE:To evaluate the associations between personal use of permanent hair dyes and cancer risk and mortality. DESIGN:Prospective cohort study. SETTING AND PARTICIPANTS:117 200 women enrolled in the Nurses' Health Study, an ongoing prospective cohort study of female nurses in the United States. The women were free...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.m2942
更新日期:2020-09-02 00:00:00
abstract:OBJECTIVES:To examine the association between environmental exposure to takeaway food outlets, takeaway food consumption, and body weight, while accounting for home, work place, and commuting route environments. DESIGN:Population based, cross sectional study, using data on individual participants' diet and weight, and...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.g1464
更新日期:2014-03-13 00:00:00
abstract:OBJECTIVE:To evaluate the performance of a rapid test for chlamydia with first void male urine samples as a potential tool for diagnosis and screening of chlamydial infection in men. DESIGN:Evaluation of test performance in prospective cohort study. Settings A young people's sexual health centre (site 1) and a genitou...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,多中心研究
doi:10.1136/bmj.b2655
更新日期:2009-07-28 00:00:00
abstract:OBJECTIVES:To determine the accuracy of a clinical decision rule (the traffic light system developed by the National Institute for Health and Clinical Excellence (NICE)) for detecting three common serious bacterial infections (urinary tract infection, pneumonia, and bacteraemia) in young febrile children. DESIGN:Retro...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.f866
更新日期:2013-02-13 00:00:00
abstract:OBJECTIVES:To examine the effects of physical work environment on long term sickness absence and to investigate interaction between physical and psychosocial risk factors. DESIGN AND SETTING:Prospective cohort study of long term sickness absence among employees in Denmark. PARTICIPANTS:5357 employees interviewed in 2...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.38731.622975.3A
更新日期:2006-02-25 00:00:00
abstract:OBJECTIVE:To investigate the risk factors for HIV infection in patients attending clinics for sexually transmitted diseases in India. DESIGN:Descriptive study of HIV serology, risk behaviour, and findings on physical examination. SUBJECTS:2800 patients presenting to outpatient clinics between 13 May 1993 and 15 July ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.311.7000.283
更新日期:1995-07-29 00:00:00
abstract:OBJECTIVE:To study the comparative importance of environment and genes in the development of islet cell autoimmunity associated with insulin dependent diabetes mellitus. DESIGN:Population based study of diabetic twins. SETTING:Danish population. SUBJECTS:18 monozygotic and 36 dizygotic twin pairs with one or both pa...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.314.7094.1575
更新日期:1997-05-31 00:00:00
abstract:OBJECTIVE:To investigate the association between treatment induced change in high density lipoprotein cholesterol and total death, coronary heart disease death, and coronary heart disease events (coronary heart disease death and non-fatal myocardial infarction) adjusted for changes in low density lipoprotein cholestero...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bmj.b92
更新日期:2009-02-16 00:00:00
abstract:OBJECTIVES:To compare the clinical and cost effectiveness of total hip arthroplasty with resurfacing arthroplasty in patients with severe arthritis of the hip. DESIGN:Single centre, two arm, parallel group, assessor blinded, randomised controlled trial with 1:1 treatment allocation. SETTING:One large teaching hospita...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmj.e2147
更新日期:2012-04-19 00:00:00
abstract::Fetomaternal haemorrhage was studied after 68 consecutive fetal intravascular transfusions performed in 20 patients with Rh isoimmunisation. alpha Fetoprotein concentration was assayed in maternal blood taken before, and immediately after each transfusion and three and 24 hours later. An increase of 50% or more in the...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.297.6660.1379
更新日期:1988-11-26 00:00:00
abstract:OBJECTIVE:To investigate the contribution of neuroleptic drugs to cognitive decline in dementia. DESIGN:Two year prospective, longitudinal study consisting of interviews every four months, with necropsy follow up. SETTING:Community settings in Oxfordshire. SUBJECTS:71 subjects with dementia, initially living at home...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.314.7076.266
更新日期:1997-01-25 00:00:00
abstract:OBJECTIVE:To assess the effectiveness of two mechanical methods of blood conservation in reducing the need for allogeneic red blood cells or coagulation products during cardiac surgery. DESIGN:Randomised controlled trial. SETTING:Regional cardiac centre in a teaching hospital in Southampton. PARTICIPANTS:263 adults ...
journal_title:BMJ (Clinical research ed.)
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1136/bmj.324.7349.1299
更新日期:2002-06-01 00:00:00
abstract::The disease management approach to patient care seeks to coordinate resources across the healthcare delivery system. The growing interest in evidence based medicine and outcomes, and a commitment to integrated care across the primary, secondary, and community care sectors, all contribute to making disease management a...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.315.7099.50
更新日期:1997-07-05 00:00:00
abstract:OBJECTIVE:To do an indirect comparison analysis of apixaban against dabigatran etexilate (2 doses) and rivaroxaban (1 dose), as well as of rivaroxaban against dabigatranetexilate (2 doses), for their relative efficacy and safety against each other, with particular focus on the secondary prevention population for stroke...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.e7097
更新日期:2012-11-05 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.)
pub_type: 杂志文章
doi:10.1136/bmj.305.6856.746
更新日期:1992-09-26 00:00:00
abstract:OBJECTIVE:To assess the cost effectiveness of different screening strategies for abdominal aortic aneurysm in men, from the perspective of a national health service. SETTING:Screening units at regional hospitals. PARTICIPANTS:Hypothetical cohort of 65 year old men from the general population. MAIN OUTCOME MEASURES:C...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.e4276
更新日期:2012-07-05 00:00:00
abstract::The aim of the study was to determine the outcome in 181 diabetic patients with advanced, previously untreated renal impairment who had been identified in a survey conducted in six health regions in the United Kingdom in 1985. Late in 1987 questionnaires were sent to the consultant physicians, geriatricians, and nephr...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.299.6708.1135
更新日期:1989-11-04 00:00:00
abstract:OBJECTIVES:To determine the prevalence of antibodies to hepatitis B core antigen, hepatitis C virus, and HIV in entrants to Irish prisons and to examine risk factors for infection. DESIGN:Cross sectional, anonymous survey, with self completed risk factor questionnaire and oral fluid specimen for antibody testing. SET...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.323.7323.1209
更新日期:2001-11-24 00:00:00
abstract:OBJECTIVE:To study different nutrients and food additives as risk factors for insulin dependent diabetes mellitus in childhood. DESIGN:Prospective case-control study. Parents of the children being studied were asked to fill in a questionnaire regarding the children's frequency of consumption of various foods. Parents ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.300.6735.1302
更新日期:1990-05-19 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.)
pub_type: 杂志文章
doi:10.1136/bmj.m331
更新日期:2020-02-19 00:00:00
abstract:OBJECTIVE:To compare direct and indirect costs of day and inpatient treatment of acute psychiatric illness. DESIGN:Randomised controlled trial with outcome and costs assessed over 12 months after the date of admission. SETTING:Teaching hospital in an inner city area. SUBJECTS:179 patients with acute psychiatric illn...
journal_title:BMJ (Clinical research ed.)
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1136/bmj.314.7091.1381
更新日期:1997-05-10 00:00:00
abstract:OBJECTIVES:To measure the impact of socioeconomic deprivation on rates of teenage pregnancy and the extent of local variation in pregnancy rates in Scotland, and to examine how both have changed over time. DESIGN:Population study using routine data from hospital records, aggregated for small areas. SUBJECTS:Female te...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.323.7306.199
更新日期:2001-07-28 00:00:00
abstract::Seventy five consecutive users of the Leeds disabled living foundation were surveyed. Two thirds of these users were at least moderately severely disabled. Forty eight of the 65 people (74%) who completed the questionnaire were recommended aids, and 33 had received some at the end of the survey. Only 10 of 28 people h...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.297.6662.1523
更新日期:1988-12-10 00:00:00
abstract:OBJECTIVE:To determine whether a relation between urinary retention and temporal rhythms exists. DESIGN:Retrospective analysis of patients presenting over three years. SETTING:Urology departments in two hospitals. PATIENTS:815 Patients presenting as emergency admissions with urinary retention and requiring immediate...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.299.6715.1560
更新日期:1989-12-23 00:00:00
abstract:OBJECTIVE:To assess the risk of hyperglycaemia with two standard oral rehydration solutions that contain carbohydrate compared with a carbohydrate free solution during rehydration of diabetic patients with acute diarrhoea. DESIGN:Prospective randomised allocation to one of three oral rehydration solutions (World Healt...
journal_title:BMJ (Clinical research ed.)
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1136/bmj.308.6929.624
更新日期:1994-03-05 00:00:00
abstract:OBJECTIVE:To estimate the prevalence of emotionalism after stroke, to assess its relation with other mood disorders, and to identify clinical variables with which it is associated. DESIGN:Descriptive study of a cohort of patients consecutively entered on a community stroke register. SETTING:Community based research p...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.298.6679.991
更新日期:1989-04-15 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.)
pub_type: 杂志文章
doi:10.1136/bmj.322.7284.460
更新日期:2001-02-24 00:00:00