Abstract:
OBJECTIVE:To examine whether total joint arthroplasty of the hip and knee reduces the risk for serious cardiovascular events in patients with moderate-severe osteoarthritis. DESIGN:Propensity score matched landmark analysis. SETTING:Ontario, Canada. PARTICIPANTS:2200 adults with hip or knee osteoarthritis aged 55 or more at recruitment (1996-98) and followed prospectively until death or 2011. MAIN OUTCOME MEASURE:Rates of serious cardiovascular events for those who received a primary total joint arthroplasty compared with those did not within an exposure period of three years after baseline assessment. RESULTS:The propensity score matched cohort consisted of 153 matched pairs of participants with moderate-severe arthritis. Over a median follow-up period of seven years after the landmark date (start of the study), matched participants who underwent a total joint arthroplasty during the exposure period were significantly less likely than those who did not to experience a cardiovascular event (hazards ratio 0.56, 95% confidence interval 0.43 to 0.74, P<0.001). Within seven years of the exposure period the absolute risk reduction was 12.4% (95% confidence interval 1.7% to 23.1%) and number needed to treat was 8 (95% confidence interval 4 to 57 patients). CONCLUSIONS:Using a propensity matched landmark analysis in a population cohort with advanced hip or knee osteoarthritis, this study found a cardioprotective benefit of primary elective total joint arthroplasty.
journal_name
BMJjournal_title
BMJ (Clinical research ed.)authors
Ravi B,Croxford R,Austin PC,Lipscombe L,Bierman AS,Harvey PJ,Hawker GAdoi
10.1136/bmj.f6187subject
Has Abstractpub_date
2013-10-30 00:00:00pages
f6187eissn
0959-8138issn
1756-1833journal_volume
347pub_type
杂志文章abstract:OBJECTIVES:To compare the course and outcome of psychotic illness in a group of Afro-Caribbean patients resident in the United Kingdom and a group of white British patients. DESIGN:Cohort study of consecutive admissions followed up for four years. SUBJECTS:113 patients with psychotic illness of recent onset admitted ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.311.7016.1325
更新日期:1995-11-18 00:00:00
abstract::Objective To determine the attributable risk of community acquired pneumonia on incidence of heart failure throughout the age range of affected patients and severity of the infection.Design Cohort study.Setting Six hospitals and seven emergency departments in Edmonton, Alberta, Canada, 2000-02.Participants 4988 adults...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.j413
更新日期:2017-02-13 00:00:00
abstract:OBJECTIVE:To investigate clinical trialists' opinions and experiences of sharing of clinical trial data with investigators who are not directly collaborating with the research team. DESIGN AND SETTING:Cross sectional, web based survey. PARTICIPANTS:Clinical trialists who were corresponding authors of clinical trials ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.e7570
更新日期:2012-11-20 00:00:00
abstract:OBJECTIVE:To determine medical students' self awareness and ability to discriminate right from left; to identify characteristics associated with this ability; and to identify any techniques used to aid discrimination. DESIGN:Questionnaire and psychometric study. SETTING:Undergraduate medical school, Northern Ireland....
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.a2826
更新日期:2008-12-16 00:00:00
abstract::A doctor who performed an abortion in Poland faces two years in prison and the loss of his medical license for up to 10 years if he is found guilty of violating the new abortion laws introduced in 1993 after a lengthy campaign by the Catholic church and the Christian Democratic Union party. The new laws permit aborti...
journal_title:BMJ (Clinical research ed.)
pub_type: 新闻
doi:10.1136/bmj.310.6994.1556a
更新日期:1995-06-17 00:00:00
abstract:OBJECTIVE:To assess the effectiveness of teaching general practitioners skills in brief cognitive behaviour therapy. DESIGN:Parallel group, cluster randomised, controlled trial of an educational package on cognitive behaviour therapy. SETTING:General practices in north London. PARTICIPANTS:84 general practitioner pr...
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.324.7343.947
更新日期:2002-04-20 00:00:00
abstract::In a one year prospective study within the Trent Regional Health Authority the demand for neonatal intensive care was estimated to be 1.1 cots per 1000 births. Intensive care level 1 (as defined by the British Paediatric Association and British Association for Perinatal Paediatrics) was determined by two separate tech...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.299.6711.1305
更新日期:1989-11-25 00:00:00
abstract:OBJECTIVE:To determine the effectiveness of an intervention to enhance self management support for patients with chronic conditions in UK primary care. DESIGN:Pragmatic, two arm, cluster randomised controlled trial. SETTING:General practices, serving a population in northwest England with high levels of deprivation. ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmj.f2882
更新日期:2013-05-13 00:00:00
abstract:OBJECTIVES:To evaluate the long term effects of perioperative beta blockade on mortality and cardiac morbidity in patients with diabetes undergoing major non-cardiac surgery. DESIGN:Randomised placebo controlled and blinded multicentre trial. Analyses were by intention to treat. SETTING:University anaesthesia and sur...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1136/bmj.332.7556.1482
更新日期:2006-06-24 00:00:00
abstract:OBJECTIVE:To determine the effectiveness of interventions designed to improve outcomes in patients with multimorbidity in primary care and community settings. DESIGN:Systematic review. DATA SOURCES:Medline, Embase, CINAHL, CAB Health, Cochrane central register of controlled trials, the database of abstracts of review...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,评审
doi:10.1136/bmj.e5205
更新日期:2012-09-03 00:00:00
abstract:OBJECTIVES:To compare "hospital at home" and hospital care as an inpatient in acute exacerbations of chronic obstructive pulmonary disease. DESIGN:Prospective randomised controlled trial with three months' follow up. SETTING:University teaching hospital offering secondary care service to 350 000 patients. PATIENTS:S...
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.321.7271.1265
更新日期:2000-11-18 00:00:00
abstract:OBJECTIVE:To investigate the long term effects of continuous subcutaneous insulin infusion (insulin pump therapy) on cardiovascular diseases and mortality in people with type 1 diabetes. DESIGN:Observational study. SETTING:Swedish National Diabetes Register, Sweden 2005-12. PARTICIPANTS:18,168 people with type 1 dia...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.h3234
更新日期:2015-06-22 00:00:00
abstract:OBJECTIVES:To provide counter evidence to existing literature on healer shopping in Africa through a systematic analysis of illness practices by Ghanaians with diabetes; to outline approaches towards improving patient centred health care and policy development regarding diabetes in Ghana. DESIGN:Longitudinal qualitati...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.331.7519.737
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVES:To assess the association of Apgar score 5 minutes after birth with cerebral palsy in both normal weight and low birthweight children, and also the association with the cerebral palsy subdiagnoses of quadriplegia, diplegia, and hemiplegia. DESIGN:Population based cohort study. SETTING:The Medical Birth Reg...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,多中心研究
doi:10.1136/bmj.c4990
更新日期:2010-10-06 00:00:00
abstract::Several viral infections have been reported to result in more severe disease in pregnant than non-pregnant women, but the relative risks have not been well characterised. This has now been done for Lassa fever in a prospective study of 68 pregnant and 79 non-pregnant women who were admitted to hospital in Sierra Leone...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.297.6648.584
更新日期:1988-09-03 00:00:00
abstract:OBJECTIVE:To assess the effect of the timing of first postnatal home visit by community health workers on neonatal mortality. DESIGN:Analysis of prospectively collected data using time varying discrete hazard models to estimate hazard ratios for neonatal mortality according to day of first postnatal home visit. DATA ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmj.b2826
更新日期:2009-08-14 00:00:00
abstract:OBJECTIVE:To determine whether total hip arthroplasty is associated with lower reoperation rates, mortality, and complications, and better function and quality of life than hemiarthroplasty for displaced fractures of the femoral neck in older patients. DESIGN:Systematic review and meta-analysis of randomised trials, q...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bmj.c2332
更新日期:2010-06-11 00:00:00
abstract:OBJECTIVE:To determine whether low dose aspirin protects women aged 65 or more against cognitive decline. DESIGN:Cohort study within both arms of the women's health study, a randomised, double blind, placebo controlled trial of low dose aspirin for the primary prevention of cardiovascular disease and cancer, 1992-5. ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmj.39166.597836.BE
更新日期:2007-05-12 00:00:00
abstract:OBJECTIVE:To characterise the functional morphology of the nasal microcirculation in humans in comparison with reindeer as a means of testing the hypothesis that the luminous red nose of Rudolph, one of the most well known reindeer pulling Santa Claus's sleigh, is due to the presence of a highly dense and rich nasal mi...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.e8311
更新日期:2012-12-14 00:00:00
abstract:OBJECTIVE:To observe the effects of stimulation of the sacral anterior roots on anorectal and low colonic pressures and to programme implanted stimulators to produce defecation. DESIGN:Prospective study of 12 consecutive patients. SETTING:Spinal injuries unit and university gastrointestinal physiology department. PA...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.300.6738.1494
更新日期:1990-06-09 00:00:00
abstract:OBJECTIVE:Firstly, to assess the completeness of ascertainment in the National Congenital Anomaly System (NCAS), the basis for congenital anomaly surveillance in England and Wales, and its variation by defect, geographical area, and socioeconomic deprivation. Secondly, to assess the impact of the lack of data on pregna...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.38300.665301.3A
更新日期:2005-01-01 00:00:00
abstract:OBJECTIVE:To investigate the association between elective caesarean sections and neonatal respiratory morbidity and the importance of timing of elective caesarean sections. DESIGN:Cohort study with prospectively collected data from the Aarhus birth cohort, Denmark. SETTING:Obstetric department and neonatal department...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.39405.539282.BE
更新日期:2008-01-12 00:00:00
abstract:OBJECTIVES:To assess the performance of a panel of common single nucleotide polymorphisms (genotypes) associated with type 2 diabetes in distinguishing incident cases of future type 2 diabetes (discrimination), and to examine the effect of adding genetic information to previously validated non-genetic (phenotype based)...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,多中心研究
doi:10.1136/bmj.b4838
更新日期:2010-01-14 00:00:00
abstract:OBJECTIVES:To assess aspects of the internal validity of recently published cluster randomised trials and explore the reporting of information useful in assessing the external validity of these trials. DESIGN:Review of 34 cluster randomised trials in primary care published in 2004 and 2005 in seven journals (British M...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章,评审
doi:10.1136/bmj.39517.495764.25
更新日期:2008-04-19 00:00:00
abstract:OBJECTIVES:To investigate the effect of Chlamydia pneumoniae infection on future development of ischaemic heart disease and mortality. DESIGN:Prospective longitudinal study. SETTING:Caerphilly, South Wales. SUBJECTS:Plasma specimens were collected during 1979-83 from 1773 men aged 45-59 years. These were tested for ...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.318.7190.1035
更新日期:1999-04-17 00:00:00
abstract:OBJECTIVE:To investigate associations between maternal overweight and obesity and infant mortality outcomes, including cause-specific mortality. DESIGN:Population based cohort study. SETTING AND PARTICIPANTS:1,857,822 live single births in Sweden 1992-2010. MAIN OUTCOME MEASURES:Associations between maternal body ma...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.g6572
更新日期:2014-12-02 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.)
pub_type: 杂志文章
doi:10.1136/bmj.312.7036.949
更新日期:1996-04-13 00:00:00
abstract:OBJECTIVE:To investigate the differences between skeletal and chronological age and to assess the role of maturity status, anthropometric data, and football related variables in explaining injury statistics in elite schoolboy footballers. DESIGN:Prospective study of injuries in schoolboy footballers according to skele...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.b490
更新日期:2009-02-26 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 whether residence before and after birth near 50 Hz high voltage installations increases a child's risk of cancer and whether risk correlates with the strength of the magnetic field. DESIGN:A population based case-control study. SETTING:Denmark. SUBJECTS:1707 children under the age of 15 wit...
journal_title:BMJ (Clinical research ed.)
pub_type: 杂志文章
doi:10.1136/bmj.307.6909.891
更新日期:1993-10-09 00:00:00