Abstract:
OBJECTIVE:Since the 1990s, pregnancy hypertension rates have declined in some countries, but not all. Increasing rates of early planned delivery (before the due date) have been hypothesised as the reason for the decline. The aim of this study was to explore whether early planned delivery can partly explain the declining pregnancy hypertension rates in Australia. DESIGN:Population-based record linkage study utilising linked birth and hospital records. SETTING AND PARTICIPANTS:A cohort of 1,076,122 deliveries in New South Wales, Australia, 2001-2012. OUTCOME MEASURES:Pregnancy hypertension (including gestational hypertension, pre-eclampsia and eclampsia) was the main outcome; pre-eclampsia was a secondary outcome. RESULTS:From 2001 to 2012, pregnancy hypertension rates declined by 22%, from 9.9% to 7.7%, and pre-eclampsia by 27%, from 3.3% to 2.4% (trend p<0.0001). At the same time, planned deliveries increased: prelabour caesarean section by 43% (12.9-18.4%) and labour inductions by 10% (24.8-27.2%). Many maternal risk factors for pregnancy hypertension significantly increased (p<0.01) over the study period including nulliparity, age ≥35 years, diabetes, overweight and obesity, and use of assisted reproductive technologies; some risk factors decreased including multifetal pregnancies, age <20 years, autoimmune diseases and previous pregnancy hypertension. Given these changes in risk factors, the pregnancy hypertension rate was predicted to increase to 10.5%. Examination of annual gestational age distributions showed that pregnancy hypertension rates actually declined from 38 weeks gestation and were steepest from 41 weeks; at least 36% of the decrease could be attributed to planned deliveries. The risk factors for pregnancy hypertension were also risk factors for planned delivery. CONCLUSIONS:It appears that an unanticipated consequence of increasing early planned deliveries is a decline in the incidence of pregnancy hypertension. Women with risk factors for hypertension were relatively more likely to be selected for early delivery.
journal_name
BMJ Openjournal_title
BMJ openauthors
Roberts CL,Algert CS,Morris JM,Ford JBdoi
10.1136/bmjopen-2015-009313subject
Has Abstractpub_date
2015-10-05 00:00:00pages
e009313issue
10issn
2044-6055pii
bmjopen-2015-009313journal_volume
5pub_type
杂志文章相关文献
BMJ Open文献大全abstract:OBJECTIVES:Our work aimed at exploring the relationship between cold spells and acute exacerbation of chronic obstructive pulmonary disease (AECOPD) hospitalisations in Beijing, China, and assessing the moderating effects of the intensities and the durations of cold spells, as well as identifying the vulnerable. DESIG...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-039745
更新日期:2021-01-06 00:00:00
abstract:OBJECTIVES:Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) emergence is a major public health concern. This study was aimed at assessing risk factors for persistently carrying MRSA in veal calf farmers and their family members. We also evaluate the dynamics of MRSA environmental load during t...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2013-003272
更新日期:2013-09-19 00:00:00
abstract:OBJECTIVES:Many of the approximately 8000 New Zealand retailers selling tobacco are small stores that tobacco companies have represented as victims of policy measures designed to reduce smoking. Despite this depiction, many retailers experience considerable ambivalence in selling tobacco, a product they know harms thei...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2015-009521
更新日期:2015-11-09 00:00:00
abstract:OBJECTIVES:There is limited published research studying the effect of antibiotic prophylaxis on surgical site infection (SSI) in dermatological surgery, and there is no consensus for its use in higher-risk cases. The objective of this study was to determine the effectiveness of a single oral preoperative 2 g dose of ce...
journal_title:BMJ open
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmjopen-2017-020213
更新日期:2018-04-19 00:00:00
abstract:OBJECTIVES:To investigate factors associated with movement behaviours among White British (WB) and South Asian (SA) children aged 6-8 years during school terms and holidays. DESIGN:Cross-sectional. SETTING:Three primary schools from the Bradford area, UK. PARTICIPANTS:One hundred and sixty WB and SA children aged 6-...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-025071
更新日期:2019-08-18 00:00:00
abstract:OBJECTIVE:To determine research priorities for the management of broken bones of the upper limb in people over 50, which represent the shared priorities of patients, their families, carers and healthcare professionals. DESIGN/SETTING:A national (UK) research priority setting partnership. PARTICIPANTS:People aged 50 a...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2019-030028
更新日期:2019-12-15 00:00:00
abstract:OBJECTIVE:The objective of this study is to summarise and analyse the current literature about what progression criteria are applied in loading exercise programmes in lower limb tendinopathies and their evidence and effectiveness. DESIGN:Systematic review. METHODS:PubMed, Embase, Scopus and PEDro were searched from i...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-041433
更新日期:2020-11-19 00:00:00
abstract:OBJECTIVE:Cancer of the oral cavity is the leading malignancy among males in Sri Lanka, and sixth among women. This study aimed to estimate costs of managing patients with oral cancer (OCA) in Sri Lanka for a 12 month period from diagnosis. DESIGN:Hospital based costing study. SETTINGS:Four selected cancer treatment ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-027661
更新日期:2019-07-19 00:00:00
abstract:INTRODUCTION:Physically active cancer survivors have substantially less cancer recurrence and improved survival compared with those who are inactive. However, the majority of survivors (70%-90%) are not meeting the physical activity (PA) guidelines. There are also significant geographic inequalities in cancer survival ...
journal_title:BMJ open
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmjopen-2018-028369
更新日期:2019-05-24 00:00:00
abstract:OBJECTIVE:Independent living ability is crucial for the elderly; however, its assessment performed in China employs various scales and lacks risk factors, especially behavioural and social-psychological factors, which could be improved through health education. This study aimed to assess the independent living ability ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-023543
更新日期:2019-10-16 00:00:00
abstract:OBJECTIVES:To prevent pain inhibiting their performance, many athletes ingest over-the-counter (OTC) analgesics before competing. We aimed at defining the use of analgesics and the relation between OTC analgesic use/dose and adverse events (AEs) during and after the race, a relation that has not been investigated to da...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2012-002090
更新日期:2013-04-19 00:00:00
abstract:INTRODUCTION:Colorectal cancer is the fourth most common type of cancer and the second most common cause of cancer-related deaths in the UK. The full blood count (FBC) is a blood test that may play a role in early detection of the disease. Previous studies have aimed to identify how levels of individual components, suc...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2019-032759
更新日期:2019-12-16 00:00:00
abstract:INTRODUCTION:Insomnia is a highly prevalent, often debilitating and economically burdensome sleep disorder with limited effective therapies. Few data are available to understand which of the therapeutic alternatives is the most effective for patients with insomnia, especially for Traditional Chinese Medicine (TCM). Chi...
journal_title:BMJ open
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1136/bmjopen-2015-008459
更新日期:2016-02-02 00:00:00
abstract:OBJECTIVES:To examine (1) the effect of new dock-less bicycle-sharing programmes on change in travel mode and (2) the correlates of change in travel mode. DESIGN:A retrospective natural experimental study. SETTING:12 neighbourhoods in Shanghai. PARTICIPANTS:1265 respondents were recruited for a retrospective study i...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-024280
更新日期:2019-02-19 00:00:00
abstract:INTRODUCTION:Inflammation and dysregulated immune responses play a crucial role in atherosclerosis, underlying ischaemic heart disease (IHD) and acute coronary syndromes (ACSs). Immune responses are also major determinants of the postischaemic injury in myocardial infarction. Regulatory T cells (CD4+CD25+FOXP3+; Treg) ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-022452
更新日期:2018-09-17 00:00:00
abstract:OBJECTIVE:To describe the range and nature of available research regarding sources of information that patients access to inform their decisions about elective surgery. DESIGN:Scoping review. DATA SOURCES:Peer-reviewed studies published until February 2019 from the six scientific literature databases were searched an...
journal_title:BMJ open
pub_type: 杂志文章,评审
doi:10.1136/bmjopen-2018-023080
更新日期:2019-08-05 00:00:00
abstract:OBJECTIVE:To classify wear and non-wear time of accelerometer data for accurately quantifying physical activity in public health or population level research. DESIGN:A bi-moving-window-based approach was used to combine acceleration and skin temperature data to identify wear and non-wear time events in triaxial accele...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2014-007447
更新日期:2015-05-11 00:00:00
abstract:BACKGROUND:The Baby Friendly Hospital Initiative (BFHI) is a practice guideline for healthcare providers to promote breastfeeding and increase breastfeeding rates. OBJECTIVE:This study aimed to examine reported experiences and views on breastfeeding of women using prenatal and postnatal services, and opinions of staff...
journal_title:BMJ open
pub_type: 杂志文章,多中心研究
doi:10.1136/bmjopen-2016-012890
更新日期:2016-12-16 00:00:00
abstract:OBJECTIVE:To evaluate the effectiveness of biopsychosocial Self-Management Support (SMS) delivered by practice nurses in routine diabetes care. DESIGN:A pragmatic cluster-randomised controlled trial within a hybrid effectiveness-implementation study design. Practice nurses were cluster-randomised. SETTING:A regional ...
journal_title:BMJ open
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmjopen-2014-007014
更新日期:2015-06-25 00:00:00
abstract:INTRODUCTION:Anaemia is a major global health problem affecting about 43% of preschool children globally and 60% of 6-24-month-old children in rural Bangladesh, half of which is attributed to iron deficiency (ID). Although WHO recommends universal supplementation with iron or home fortification with iron-containing mul...
journal_title:BMJ open
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmjopen-2017-018325
更新日期:2017-11-15 00:00:00
abstract:BACKGROUND:Achilles tendon injuries give rise to substantial long-lasting morbidity and pose considerable challenges for clinicians and patients during the lengthy healing period. Current treatment strategies struggle to curb the burden of this injury on health systems and society due to lengthy rehabilitation, work ab...
journal_title:BMJ open
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1136/bmjopen-2017-018135
更新日期:2017-11-16 00:00:00
abstract:OBJECTIVES:To investigate whether life event stress was associated with greater psychological distress and poorer quality of life in older individuals with chronic obstructive pulmonary disease (COPD), in comparison with their counterparts without COPD. DESIGN:Cross-sectional study. PARTICIPANTS:A population-based sa...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2012-001674
更新日期:2012-11-19 00:00:00
abstract:OBJECTIVES:The impact of lung cancer screening with low-dose chest CT (LDCT) on participants' anxiety levels and health-related quality of life (HRQoL) is an important consideration in the implementation of such programmes. We aimed to describe changes in anxiety and HRQoL in a high-risk Canadian cohort undergoing LDCT...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-024719
更新日期:2019-01-17 00:00:00
abstract:OBJECTIVES:To examine the association between smoking cessation attempts during the previous 12 months, motivators to quit smoking and nicotine dependence levels among current male smokers after Japan's massive 2010 tobacco tax increase. DESIGN:Cross-sectional study. SETTING:A self-reported questionnaire about smokin...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2014-006658
更新日期:2015-03-20 00:00:00
abstract:OBJECTIVES:To explore the social and academic experiences of nursing transfer students' (NTSs) in an Asian context. DESIGN:A descriptive qualitative study design using focus groups and individual interviews with Chinese NTSs. The data were transcribed verbatim and analysed by using qualitative content analysis. SETTI...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2019-034205
更新日期:2020-05-15 00:00:00
abstract:OBJECTIVE:The COVID-19 pandemic has set unprecedented demand on the healthcare workforce around the world. The UK has been one of the most affected countries in Europe. The aim of this study was to explore the perceptions and experiences of healthcare workers (HCWs) in relation to COVID-19 and care delivery models impl...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-040503
更新日期:2020-11-05 00:00:00
abstract:OBJECTIVES:To identify the differential effects of patient, health service, temporal and geographic factors on length of stay (LOS) for chronic obstructive pulmonary disease (COPD)-related admissions. DESIGN:We used stratified Cox proportional hazard model to evaluate the association between LOS and patient, health se...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2012-000869
更新日期:2012-09-01 00:00:00
abstract:INTRODUCTION:Rotator cuff injuries account for up to 70% of pain in the shoulder. However, there remains no consensus on the best surgical treatment for patients with rotator cuff injuries, in terms of the cost-effectiveness and cost-utility of open and arthroscopic methods for rotator cuff repair. The objective of thi...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-043126
更新日期:2020-12-28 00:00:00
abstract:OBJECTIVES:To promote gender diversity and equity in higher education, Athena Scientific Women's Academic Network (SWAN) supports and recognises higher education institutions (HEI) in advancing the careers of women through charter commitment, awards, training and advocacy since 2005. Most evaluation studies, however, a...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2019-032915
更新日期:2020-02-12 00:00:00
abstract:INTRODUCTION:This community-based participatory research, Growing Resilience, will be the first full-scale randomised controlled trial we have identified that is designed to evaluate impacts of home gardening on family health. It is based on observational studies suggesting home food gardening has myriad health benefit...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-022731
更新日期:2019-04-03 00:00:00