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BMJ Open

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https://www.readbyqxmd.com/read/28550024/chest-pain-and-shortness-of-breath-in-cardiovascular-disease-a-prospective-cohort-study-in-uk-primary-care
#1
Lauren A Barnett, James A Prior, Umesh T Kadam, Kelvin P Jordan
OBJECTIVE: To determine characteristics associated with monthly chest pain and shortness of breath (SoB) during activity in cardiovascular disease (CVD) and trajectories of these symptoms over 10 months. STUDY DESIGN AND SETTING: Baseline questionnaire was sent to patients aged ≥40 years from 10 UK general practices. Responders were sent monthly questionnaires for 10 months. For patients with CVD (ischaemic heart disease and heart failure), the association of sociodemographic characteristics, pain elsewhere and anxiety and depression with monthly reports of chest pain and SoB during activity were determined using multilevel, multinomial logistic regression...
May 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28550023/the-super-study-protocol-for-a-randomised-controlled-trial-comparing-follicle-stimulating-hormone-and-clomiphene-citrate-for-ovarian-stimulation-in-intrauterine-insemination
#2
N A Danhof, M van Wely, Cam Koks, J Gianotten, J P de Bruin, B J Cohlen, D P van der Ham, N F Klijn, Mha van Hooff, Fjm Broekmans, K Fleischer, Cah Janssen, J M Rijn van Weert, J van Disseldorp, M Twisk, M Traas, Mfg Verberg, M J Pelinck, J Visser, Dam Perquin, DES Boks, H R Verhoeve, C F van Heteren, Bwj Mol, S Repping, F van der Veen, M H Mochtar
OBJECTIVE: To study the effectiveness of four cycles of intrauterine insemination (IUI) with ovarian stimulation (OS) by follicle-stimulating hormone (FSH) or by clomiphene citrate (CC), and adherence to strict cancellation criteria. SETTING: Randomised controlled trial among 22 secondary and tertiary fertility clinics in the Netherlands. PARTICIPANTS: 732 women from couples diagnosed with unexplained or mild male subfertility and an unfavourable prognosis according to the model of Hunault of natural conception...
May 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28550022/longitudinal-assessment-of-brain-derived-neurotrophic-factor-in-sardinian-psychotic-patients-labsp-a-protocol-for-a-prospective-observational-study
#3
Diego Primavera, Mirko Manchia, Luca Deriu, Massimo Tusconi, Roberto Collu, Maria Scherma, Paola Fadda, Walter Fratta, Bernardo Carpiniello
INTRODUCTION: Brain-derived neurotrophic factor (BDNF) plays a crucial role in neurodevelopment, synaptic plasticity and neuronal function and survival. Serum and plasma BDNF levels are moderately, but consistently, decreased in patients with schizophrenia (SCZ) compared with healthy controls. There is a lack of knowledge, however, on the temporal manifestation of this decline. Clinical, illness course and treatment factors might influence the variation of BDNF serum levels in patients with psychosis...
May 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28550021/effects-of-continuous-positive-airway-pressure-on-neurocognitive-architecture-and-function-in-patients-with-obstructive-sleep-apnoea-study-protocol-for-a-multicentre-randomised-controlled-trial
#4
Huajun Xu, Hui Wang, Jian Guan, Hongliang Yi, Yingjun Qian, Jianyin Zou, Yunyan Xia, Yiqun Fu, Xinyi Li, Xiao Jiao, Hengye Huang, Pin Dong, Ziwei Yu, Jun Yang, Mingliang Xiang, Jiping Li, Yanqing Chen, Peihua Wang, Yizhou Sun, Yuehua Li, Xiaojian Zheng, Wei Jia, Shankai Yin
OBJECTIVES: Many clinical studies have indicated that obstructive sleep apnoea (OSA), the most common chronic sleep disorder, may affect neurocognitive function, and that treatment for continuous positive airway pressure (CPAP) has some neurocognitive protective effects against the adverse effects of OSA. However, the effects of CPAP treatment on neurocognitive architecture and function remain unclear. Therefore, this multicentre trial was designed to investigate whether and when neurocognitive architecture and function in patients with OSA can be improved by CPAP treatment and to explore the role of gut microbiota in improving neurocognitive function during treatment...
May 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28550020/translation-adaptation-and-validation-of-two-versions-of-the-chronic-liver-disease-questionnaire-in-malaysian-patients-for-speakers-of-both-english-and-malay-languages-a-cross-sectional-study
#5
Shasha Khairullah, Sanjiv Mahadeva
OBJECTIVE: We aimed to adapt, translate and validate the Chronic Liver Disease Questionnaire (CLDQ) in Malaysian patients with chronic liver diseases of various aetiologies. SETTING: Tertiary level teaching institution in Malaysia. PARTICIPANTS: The validation process involved 211 adult patients (English language n=101, Malay language n=110) with chronic liver disease. Characteristics of the study subjects were as follows: mean (SD) age was 56 (12...
May 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28550019/measuring-ability-to-assess-claims-about-treatment-effects-a-latent-trait-analysis-of-items-from-the-claim-evaluation-tools-database-using-rasch-modelling
#6
Astrid Austvoll-Dahlgren, Øystein Guttersrud, Allen Nsangi, Daniel Semakula, Andrew D Oxman
BACKGROUND: The Claim Evaluation Tools database contains multiple-choice items for measuring people's ability to apply the key concepts they need to know to be able to assess treatment claims. We assessed items from the database using Rasch analysis to develop an outcome measure to be used in two randomised trials in Uganda. Rasch analysis is a form of psychometric testing relying on Item Response Theory. It is a dynamic way of developing outcome measures that are valid and reliable. OBJECTIVES: To assess the validity, reliability and responsiveness of 88 items addressing 22 key concepts using Rasch analysis...
May 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515199/are-healthcare-aides-underused-in-long-term-care-a-cross-sectional-study-on-continuing-care-facilities-in-canada
#7
Mubashir A Arain, Siegrid Deutschlander, Paola Charland
OBJECTIVES: Over the last 10 years, appropriate workforce utilisation has been an important discussion among healthcare practitioners and policy-makers. The role of healthcare aides (HCAs) has also expanded to improve their utilisation. This evolving role of HCAs in Canada has prompted calls for standardised training, education and scope of practice for HCAs. The purpose of this research was to examine the differences in HCAs training and utilisation in continuing care facilities. DESIGN: From June 2014 to July 2015, we conducted a mixed-method study on HCA utilisation in continuing care...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515198/post-authorisation-passive-enhanced-safety-surveillance-of-seasonal-influenza-vaccines-protocol-of-a-pilot-study-in-england
#8
Simon de Lusignan, Gaël Dos Santos, Ana Correa, François Haguinet, Ivelina Yonova, Florence Lair, Rachel Byford, Filipa Ferreira, Karen Stuttard, Tom Chan
AIM: To pilot enhanced safety surveillance of seasonal influenza vaccine meeting the European Medicines Agency (EMA) requirement to rapidly detect a significant increase in the frequency or severity of adverse events of interest (AEIs), which may indicate risk from the new season's vaccine. STUDY DESIGN: A prospective passive enhanced safety surveillance combining data collection from adverse drug reaction (ADR) cards with automated collection of pseudonymised routinely collected electronic health record (EHR) data...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515197/models-for-estimating-and-projecting-global-regional-and-national-prevalence-and-disease-burden-of-asthma-protocol-for-a-systematic-review
#9
Mohammad Romel Bhuia, Bright I Nwaru, Christopher J Weir, Aziz Sheikh
INTRODUCTION: Models that have so far been used to estimate and project the prevalence and disease burden of asthma are in most cases inadequately described and irreproducible. We aim systematically to describe and critique the existing models in relation to their strengths, limitations and reproducibility, and to determine the appropriate models for estimating and projecting the prevalence and disease burden of asthma. METHODS: We will search the following electronic databases to identify relevant literature published from 1980 to 2017: Medline, Embase, WHO Library and Information Services and Web of Science Core Collection...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515196/cost-effectiveness-of-therapist-guided-internet-delivered-cognitive-behaviour-therapy-for-paediatric-obsessive-compulsive-disorder-results-from-a-randomised-controlled-trial
#10
Fabian Lenhard, Richard Ssegonja, Erik Andersson, Inna Feldman, Christian Rück, David Mataix-Cols, Eva Serlachius
OBJECTIVES: To evaluate the cost-effectiveness of a therapist-guided internet-delivered cognitive behaviour therapy (ICBT) intervention for adolescents with obsessive-compulsive disorder (OCD) compared with untreated patients on a waitlist. DESIGN: Single-blinded randomised controlled trial. SETTING: A research clinic within the regular child and adolescent mental health service in Stockholm, Sweden. PARTICIPANTS: Sixty-seven adolescents (12-17 years) with a Diagnostic and Statistical Manual of Mental Disorders Fifth Edition diagnosis of OCD...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515195/cohort-profile-internal-migration-in-sub-saharan-africa-the-migration-and-health-in-malawi-mhm-study
#11
Philip Anglewicz, Mark VanLandingham, Lucinda Manda-Taylor, Hans-Peter Kohler
PURPOSE: The Migration and Health in Malawi (MHM) study focuses on a key challenge in migration research: although it has long been established that migration and health are closely linked, identifying the effect of migration on various health outcomes is complicated by methodological challenges. The MHM study uses a longitudinal panel premigration and postmigration study design (with a non-migrant comparison group) to measure and/or control for important characteristics that affect both migration and health outcomes...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515194/do-patients-and-health-care-providers-have-discordant-preferences-about-which-aspects-of-treatments-matter-most-evidence-from-a-systematic-review-of-discrete-choice-experiments
#12
Mark Harrison, Katherine Milbers, Marie Hudson, Nick Bansback
OBJECTIVES: To review studies eliciting patient and healthcare provider preferences for healthcare interventions using discrete choice experiments (DCEs) to (1) review the methodology to evaluate similarities, differences, rigour of designs and whether comparisons are made at the aggregate level or account for individual heterogeneity; and (2) quantify the extent to which they demonstrate concordance of patient and healthcare provider preferences. METHODS: A systematic review searching Medline, EMBASE, Econlit, PsycINFO and Web of Science for DCEs using patient and healthcare providers...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515193/cost-effectiveness-of-telehealthcare-to-patients-with-chronic-obstructive-pulmonary-disease-results-from-the-danish-telecare-north-cluster-randomised-trial
#13
Flemming Witt Udsen, Pernille Heyckendorff Lilholt, Ole Hejlesen, Lars Ehlers
OBJECTIVES: To investigate the cost-effectiveness of a telehealthcare solution in addition to usual care compared with usual care. DESIGN: A 12-month cost-utility analysis conducted alongside a cluster-randomised trial. SETTING: Community-based setting in the geographical area of North Denmark Region in Denmark. PARTICIPANTS: 26 municipality districts define randomisation clusters with 13 districts in each arm. 1225 patients with chronic obstructive pulmonary disease were enrolled, of which 578 patients were randomised to telehealthcare and 647 to usual care...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515192/study-protocol-for-a-transversal-study-to-develop-a-screening-model-for-excessive-gambling-behaviours-on-a-representative-sample-of-users-of-french-authorised-gambling-websites
#14
Bastien Perrot, Jean-Benoit Hardouin, Jean-Michel Costes, Julie Caillon, Marie Grall-Bronnec, Gaëlle Challet-Bouju
INTRODUCTION: Since the legalisation of online gambling in France in 2010, gambling operators must implement responsible gambling measures to prevent excessive gambling practices. However, actually there is no screening procedure for identifying problematic gamblers. Although several studies have already been performed using several data sets from online gambling operators, the authors deplored several methodological and clinical limits that prevent scientifically validating the existence of problematic gambling behaviour...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515191/socially-disparate-trends-in-lifespan-variation-a-trend-study-on-income-and-mortality-based-on-nationwide-danish-register-data
#15
Henrik Brønnum-Hansen
BACKGROUND: Social inequality trends in life expectancy are not informative as to changes in social disparity in the age-at-death distribution. The purpose of the study was to investigate social differentials in trends and patterns of adult mortality in Denmark. METHODS: Register data on income and mortality from 1986 to 2014 were used to investigate trends in life expectancy, life disparity and the threshold age that separates 'premature' and 'late' deaths. Mortality compression was quantified and compared between income quartiles...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515190/interaction-of-ace-genotype-and-salt-intake-on-hypertension-among-chinese-kazakhs-results-from-a-population-based-cross-sectional-study
#16
Yuyan Wang, Biao Zhang, Lei Hou, Wei Han, Fang Xue, Yanhong Wang, Yong Tang, Shaohua Liang, Weizhi Wang, Kuliqian Asaiti, Zixing Wang, Yaoda Hu, Lei Wang, Changchun Qiu, Mingtao Zhang, Jingmei Jiang
OBJECTIVES: To explore the effect of interaction between ACE genotype and salt intake on hypertension among Chinese Kazakhs, and to compare applications of interactions between logistic model and generalised partially linear tree-based regression (GPLTR) model. DESIGN: Population-based cross-sectional study. SETTING: Hong Dun, North Xinjiang, China. PARTICIPANTS: Non-consanguineous Chinese Kazakh participants (n=916, 342 men and 574 women) aged ≥30 years...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515189/10-year-trends-in-statin-utilization-in-taiwan-a-retrospective-study-using-taiwan-s-national-health-insurance-research-database
#17
Hsing-Chun Hsieh, Jason C Hsu, Christine Y Lu
OBJECTIVE: Statins have been commonly used to treat patients with hypercholesterolaemia and to prevent cardiovascular disease (CVD) worldwide. This study examined trends in use of statins in Taiwan from 2002 to 2011. DESIGN: This is a retrospective observational study focusing on the utilisation of statins. SETTING: The monthly claims data for statins between 2002 and 2011 were retrieved from Taiwan's National Health Insurance Research Database...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515188/trends-in-socioeconomic-inequalities-in-five-major-risk-factors-for-cardiovascular-disease-in-the-korean-population-a-cross-sectional-study-using-data-from-the-korea-national-health-and-nutrition-examination-survey-2001-2014
#18
Yoon Jung Kim, Ji Sung Lee, Juri Park, Dong Seop Choi, Doo Man Kim, Kee-Hyoung Lee, Ho Yeon Kim, Sin Gon Kim, Juneyoung Lee
OBJECTIVES: To examine trends in socioeconomic inequalities in major cardiovascular disease (CVD) risk factors among the Korean population. DESIGN: Cross-sectional study. SETTING: A nationally representative population survey database. PARTICIPANTS: A total of 42 725 Koreans, aged 25-64 years, who participated in the Korean National Health and Nutrition Examination Survey (KNHANES) II (2001) to VI (2013-2014). MAIN OUTCOME MEASURES: Trends in socioeconomic inequalities in five major CVD risk factors (smoking, obesity, diabetes, hypertension and hypercholesterolaemia)...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515187/reducing-social-isolation-and-loneliness-in-older-people-a-systematic-review-protocol
#19
Filipa Landeiro, Paige Barrows, Ellen Nuttall Musson, Alastair M Gray, José Leal
INTRODUCTION: Social isolation and loneliness affect approximately one-third to one-half of the elderly population and have a negative impact on their physical and mental health. Group-based interventions where facilitators are well trained and where the elderly are actively engaged in their development seem to be more effective, but conclusions have been limited by weak study designs. We aim to conduct a systematic review to assess the effectiveness of health promotion interventions on social isolation or loneliness in older people...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28515186/understanding-determinants-of-unequal-distribution-of-stillbirth-in-tehran-iran-a-concentration-index-decomposition-approach
#20
Amir Almasi-Hashiani, Mahdi Sepidarkish, Saeid Safiri, Esmaeil Khedmati Morasae, Yahya Shadi, Reza Omani-Samani
OBJECTIVE: The present inquiry set to determine the economic inequality in history of stillbirth and understanding determinants of unequal distribution of stillbirth in Tehran, Iran. METHODS: A population-based cross-sectional study was conducted on 5170 pregnancies in Tehran, Iran, since 2015. Principal component analysis (PCA) was applied to measure the asset-based economic status. Concentration index was used to measure socioeconomic inequality in stillbirth and then decomposed into its determinants...
May 17, 2017: BMJ Open
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