Abstract:
:Statistical hypothesis testing involving the comparison of three or more means and/or proportions is a frequent undertaking in medical statistics. For comparison of means, analysis of variance is a common choice and for comparison of proportions, χ(2) tests are common. However, both these approaches have important limitations which include the need for post hoc testing to identify the unusual group(s) without an integral graphical device to present the final results. These limitations are elegantly overcome by the analysis of means, which is widely used in industrial statistics, and illustrated here using means and proportions.
journal_name
BMJ Qual Safjournal_title
BMJ quality & safetyauthors
Mohammed MA,Holder Rdoi
10.1136/bmjqs-2011-000477subject
Has Abstractpub_date
2012-06-01 00:00:00pages
529-32issue
6eissn
2044-5415issn
2044-5423pii
bmjqs-2011-000477journal_volume
21pub_type
杂志文章abstract:OBJECTIVE:To examine the association of consultants' experience with mortality by day of the week when elective surgery was performed. DESIGN:Retrospective observational study using English hospital administrative data. SETTING:All acute and specialist English National Health Service (NHS) hospitals carrying out elec...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2015-004105
更新日期:2016-05-01 00:00:00
abstract::This paper aims to draw attention to the social and micropolitical dimensions of attempting to implement improvements within healthcare organisations. It is argued that quality improvement initiatives, like other forms of organisational innovation, will fail unless they are conceived and implemented in such a way as t...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs.2010.046482
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND:Realising the full potential of the WHO Surgical Safety Checklist (SSC) to reduce perioperative harm requires the constructive engagement of all operating room (OR) team members during its administration. To facilitate research on SSC implementation, a valid and reliable instrument is needed for measuring OR...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2015-004448
更新日期:2016-10-01 00:00:00
abstract::'The Problem with…' series covers controversial topics related to efforts to improve healthcare quality, including widely recommended, but deceptively difficult strategies for improvement and pervasive problems that seem to resist solution. ...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2017-007463
更新日期:2018-09-01 00:00:00
abstract::OBJECTIVE To evaluate the effects of a clinical pharmacist service on health-related quality of life (HRQL) and prescribing of drugs. METHODS A randomised controlled study was performed in two internal medicine wards. The intervention consisted of medication reviews with feedback to the physicians, drug treatment disc...
journal_title:BMJ quality & safety
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmjqs.2009.039693
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:A growing body of peer-reviewed studies demonstrate the importance of safety culture in healthcare safety improvement, but little attention has focused on developing a common set of definitions, dimensions and measures. OBJECTIVES:Specific objectives of this literature review include: summarising definition...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs.2010.040964
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVE:Paediatric cardiac surgery has a low error tolerance and demands high levels of cognitive and technical performance. Growing evidence suggests that further improvements in patient outcomes depend on system factors, in particular, effective team skills. The hypotheses that small intraoperative non-routine even...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs.2010.048983
更新日期:2011-07-01 00:00:00
abstract:INTRODUCTION:Trauma resuscitation is a complex and time-sensitive endeavour with significant risk for error. These errors can manifest from sequential system, team and knowledge-based failures, defined as latent safety threats (LSTs). In situ simulation (ISS) provides a novel prospective approach to recreate clinical s...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2020-011363
更新日期:2020-10-23 00:00:00
abstract:OBJECTIVES:To determine whether sharing of routinely collected health service performance data could have predicted a critical safety failure at an Australian maternity service. DESIGN:Observational quantitative descriptive study. SETTING:A public hospital maternity service in Victoria, Australia. DATA SOURCES:A pub...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2019-010141
更新日期:2020-01-08 00:00:00
abstract:OBJECTIVE:To examine the association of mortality by day of the week for emergency and elective patients. DESIGN:Retrospective observational study using the international dataset from the Global Comparators (GC) project consisting of hospital administrative data. SETTING:28 hospitals from England, Australia, USA and ...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2014-003467
更新日期:2015-08-01 00:00:00
abstract:OBJECTIVE:Neonates are at high risk for significant morbidity and mortality from medication prescribing errors. Despite general awareness of these risks, mistakes continue to happen. Alerts in computerised physician order entry intended to help prescribers avoid errors have not been effective enough. This improvement p...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2012-001089
更新日期:2013-03-01 00:00:00
abstract:OBJECTIVE:To examine how disciplinary tribunals assess different forms of misconduct in deciding whether to remove doctors from practice for professional misconduct. DESIGN AND SETTING:Multivariable regression analysis of 485 cases in which tribunals found doctors guilty of professional misconduct. The cases came from...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2012-000941
更新日期:2012-12-01 00:00:00
abstract:BACKGROUND:There is widespread recognition that leadership skills are essential for effective performance in the workplace, but the evidence detailing effective leadership behaviours for surgeons during operations is unclear. DATA SOURCES:Boolean searches of four on-line databases and detailed hand search of relevant ...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs.2010.040295
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND:Diagnostic errors (missed, delayed or wrong diagnosis) have recently gained attention and are associated with significant preventable morbidity and mortality. The authors reviewed the recent literature and identified interventions that address system-related factors that contribute directly to diagnostic err...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs-2011-000150
更新日期:2012-02-01 00:00:00
abstract::Cystic fibrosis (CF) is a chronic disease requiring patients to have frequent specialty healthcare visits to delay progression of lung disease, prevent and treat failure to thrive and initiate early interventions to prevent acute illness and complications. The CF Foundation recommends that patients have visits with th...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs-2013-002345
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:Patient and family engagement (PFE) in healthcare is an important element of the transforming healthcare system; however, the prevalence of various PFE practices in the USA is not known. OBJECTIVE:We report on a survey of hospitals in the USA regarding their PFE practices during 2013-2014. RESULTS:The resp...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2015-004006
更新日期:2016-03-01 00:00:00
abstract:BACKGROUND:Relatively little is known about how scorecards presenting performance indicators influence medication safety. We evaluated the effects of implementing a ward-level medication safety scorecard piloted in two English NHS hospitals and factors influencing these. METHODS:We used a mixed methods, controlled bef...
journal_title:BMJ quality & safety
pub_type: 杂志文章,多中心研究
doi:10.1136/bmjqs-2012-001730
更新日期:2014-02-01 00:00:00
abstract::BACKGROUND Previous research has shown a correlation between physician job satisfaction and patient satisfaction with quality of care, but the connection between job satisfaction of other primary care team members and patient satisfaction is yet unclear. OBJECTIVE To evaluate whether there is an association between pa...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs.2009.038166
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVES:To synthesise qualitative studies that investigated the experiences of healthcare professionals with using information from patient-reported outcome measures (PROMs) to improve the quality of care. DESIGN:A qualitative systematic review was conducted by searching PubMed, PsycINFO and CINAHL with no time res...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs-2013-002524
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:Catheter-associated urinary tract infections (CAUTI) are costly, common and often preventable by reducing unnecessary urinary catheter (UC) use. METHODS:To summarise interventions to reduce UC use and CAUTIs, we updated a prior systematic review (through October 2012), and a meta-analysis regarding interven...
journal_title:BMJ quality & safety
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bmjqs-2012-001774
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:Plan-do-study-act (PDSA) cycles provide a structure for iterative testing of changes to improve quality of systems. The method is widely accepted in healthcare improvement; however there is little overarching evaluation of how the method is applied. This paper proposes a theoretical framework for assessing t...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs-2013-001862
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:Distraction and interruption are endemic in the clinical environment and contribute to error. This study assesses whether simulation-based training with targeted feedback can improve undergraduate management of distractions and interruptions to reduce error-making. DESIGN:A prospective non-randomised contro...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2014-003272
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND:There have been repeated calls to better involve patients and the public and to place them at the centre of healthcare. Serious clinical and service failings in the UK and internationally increase the urgency and importance of addressing this problem. Despite this supportive policy context, progress to achie...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2015-004839
更新日期:2016-08-01 00:00:00
abstract:INTRODUCTION:Adverse events (AEs) affect 3-12% of hospitalised patients. These are estimates from a labour-intensive chart review process,which is not feasible outside research. Clinical deterioration on the wards triggers a rapid response teams (RRTs) consult and can be used to identify an AE prospectively. OBJECTIVE...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2014-003833
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:Outcome benefits of using the WHO Surgical Safety Checklist rely on compliance with checklist administration. OBJECTIVE:To evaluate engagement of operating room (OR) subteams (anaesthesia, surgery and nursing), and compliance with administering checklist domains (Sign In, Time Out and Sign Out) and checklis...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2015-004545
更新日期:2016-12-01 00:00:00
abstract::Current methods used to evaluate the effects of healthcare improvement efforts have limitations. Designs with strong causal inference-such as individual patient or cluster randomisation-can be inappropriate and infeasible to use in single-centre settings. Simpler designs-such as prepost studies-are unable to infer cau...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2019-009734
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:Experts in patient safety stress the importance of a shared culture of safety. Lack of consensus may be detrimental to patient safety. This study examines differences in patient safety culture perceptions among providers, management and staff in a large national survey of safety culture in ambulatory practic...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2014-003914
更新日期:2016-08-01 00:00:00
abstract:OBJECTIVE:To assess the quality of guidelines, consensus statements and systematic reviews on flu and pneumococcal immunisations in HIV-infected children. METHOD:The authors screened PubMed and Embase databases until the year 2009 for guidelines, consensus statements and systematic reviews on flu and pneumococcal immu...
journal_title:BMJ quality & safety
pub_type: 杂志文章,评审
doi:10.1136/bmjqs.2010.047316
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND:Educational interventions to improve teamwork in crisis situations have proliferated in recent years with substantial variation in teamwork measurement. This systematic review aimed to synthesise available tools and their measurement properties in order to identify the most robust tool for measuring the team...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2018-008260
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVE:To determine the association between daily levels of registered nurse (RN) and nursing assistant staffing and hospital mortality. DESIGN:This is a retrospective longitudinal observational study using routinely collected data. We used multilevel/hierarchical mixed-effects regression models to explore the asso...
journal_title:BMJ quality & safety
pub_type: 杂志文章
doi:10.1136/bmjqs-2018-008043
更新日期:2019-08-01 00:00:00