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international journal of epidemiology

Juan Ruano, Francisco Gómez-García, Jesús Gay-Mimbrera, Macarena Aguilar-Luque, José Luis Fernández-Rueda, Jesús Fernández-Chaichio, Patricia Alcalde-Mellado, Pedro J Carmona-Fernandez, Juan Luis Sanz-Cabanillas, Isabel Viguera-Guerra, Francisco Franco-García, Manuel Cárdenas-Aranzana, José Luis Hernández Romero, Marcelino Gonzalez-Padilla, Beatriz Isla-Tejera, Antonio Velez Garcia-Nieto
BACKGROUND: Epidemiology and the reporting characteristics of systematic reviews (SRs) and meta-analyses (MAs) are well known. However, no study has analyzed the influence of protocol features on the probability that a study's results will be finally reported, thereby indirectly assessing the reporting bias of International Prospective Register of Systematic Reviews (PROSPERO) registration records. OBJECTIVE: The objective of this study is to explore which factors are associated with a higher probability that results derived from a non-Cochrane PROSPERO registration record for a systematic review will be finally reported as an original article in a scientific journal...
March 9, 2018: Systematic Reviews
Kristian Pollock, Jane Seymour
This is the second in an occasional series of paired commentaries in Age and Ageing, the Journal of the British Geriatrics Society and the Journal of the American Geriatrics Society (JAGS). The aim is to address issues of current significance and to foster dialogue and increased understanding between academics and clinicians working in comparative international settings. Both commentaries address the urgent need to improve palliative care for older people, with a critique of some stereotypes surrounding palliative care and the 'good death'...
March 6, 2018: Age and Ageing
Shuang Liang, Wen-Ling Wang, Fang-Lei Zhu, Shu-Wei Duan, Xue-Feng Sun, Xiang-Mei Chen, Guang-Yan Cai
INTRODUCTION: The proportion of elderly people is steadily rising worldwide, especially in low-income and middle-income countries, including China. Chronic kidney disease (CKD) is a common disorder in older people. However, little is known about the epidemiology of CKD and its consequences among the elderly. Improvements on clinical guidelines and healthcare policies for this population are required. This study aims to examine the risk factors for progression of CKD among the elderly and develop models to identify subgroups who are at high risk...
February 24, 2018: BMJ Open
Hongbo Lin, Xun Tang, Peng Shen, Dudan Zhang, Jinguo Wu, Jingyi Zhang, Ping Lu, Yaqin Si, Pei Gao
INTRODUCTION: Data based on electronic health records (EHRs) are rich with individual-level longitudinal measurement information and are becoming an increasingly common data source for clinical risk prediction worldwide. However, few EHR-based cohort studies are available in China. Harnessing EHRs for research requires a full understanding of data linkages, management, and data quality in large data sets, which presents unique analytical opportunities and challenges. The purpose of this study is to provide a framework to establish a uniquely integrated EHR database in China for scientific research...
February 12, 2018: BMJ Open
Auras R Atreya, Mihaela Stefan, Jennifer L Friderici, Reva Kleppel, Janice Fitzgerald, Michael B Rothberg
PURPOSE: To identify the characteristics of successful research projects at an internal medicine residency program with an established research curriculum. METHOD: The authors collected data about all research projects initiated by or involving medicine residents from 2006 to 2013 at Baystate Medical Center, using departmental files and institutional review board applications. Resident and mentor characteristics were determined using personnel files and Medline searches...
February 6, 2018: Academic Medicine: Journal of the Association of American Medical Colleges
Radha Madhavanpillai Baiju, Elbe Peter, Nettiyat Oommen Varghese, Remadevi Sivaram, David Iloyd Streiner
Context: Patient-reported outcomes (PROs) have become primary or secondary outcome measure in clinical trials and epidemiological studies in Medicine and Dentistry in general and Periodontology in particular. PROs are patients' self-perceptions about consequences of a disease or its treatment. They can be used to measure the impact of the disease or the effect of its treatment. There are insufficient data in Periodontology related to scale development methodology although, recently, there is an increase in the number of published studies utilizing such tools in major journals...
March 2017: Journal of Indian Society of Periodontology
Philip S Barie
BACKGROUND: Discussion of outcomes of surgical sepsis is no longer straightforward. Definitions of sepsis have changed recently and updated data are scant. Surgical patient populations are often heterogeneous; the patient population being considered must be described with precision. Traditional 30-d operative mortality may not be the most relevant outcome to consider. What should change or be the emphasis going forward? METHODS: Review and synthesis of pertinent English-language literature...
February 2, 2018: Surgical Infections
Tina Marie Kringelbach, Bente Glintborg, Estrid V Hogdall, Julia Sidenius Johansen, Merete Lund Hetland
INTRODUCTION: The introduction of biological disease-modifying antirheumatic drugs (bDMARDs) has improved the treatment of inflammatory rheumatic diseases dramatically. However, bDMARD treatment failure occurs in 30%-40% of patients due to lack of effect or adverse events, and the tools to predict treatment outcomes in individual patients are currently limited. The objective of the present study is to identify diagnostic, prognostic and predictive biomarkers, which can be used to (1) diagnose inflammatory rheumatic diseases early in the disease course with high sensitivity and specificity, (2) improve prognostication or (3) predict and monitor treatment effectiveness and tolerability for the individual patient...
February 1, 2018: BMJ Open
J Gong, K K Nishimura, L Fernandez-Rhodes, J Haessler, S Bien, M Graff, U Lim, Y Lu, M Gross, M Fornage, S Yoneyama, C R Isasi, P Buzkova, M Daviglus, D-Y Lin, R Tao, R Goodloe, W S Bush, E Farber-Eger, J Boston, H H Dilks, G Ehret, C C Gu, C E Lewis, K-D H Nguyen, R Cooper, M Leppert, M R Irvin, E P Bottinger, L R Wilkens, C A Haiman, L Park, K R Monroe, I Cheng, D O Stram, C S Carlson, R Jackson, L Kuller, D Houston, C Kooperberg, S Buyske, L A Hindorff, D C Crawford, R J F Loos, L Le Marchand, T C Matise, K E North, U Peters
OBJECTIVE: Body mass index (BMI) is commonly used to assess obesity, which is associated with numerous diseases and negative health outcomes. BMI has been shown to be a heritable, polygenic trait, with close to 100 loci previously identified and replicated in multiple populations. We aim to replicate known BMI loci and identify novel associations in a trans-ethnic study population. SUBJECTS: Using eligible participants from the Population Architecture using Genomics and Epidemiology consortium, we conducted a trans-ethnic meta-analysis of 102 514 African Americans, Hispanics, Asian/Native Hawaiian, Native Americans and European Americans...
December 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Ferrán Catalá-López, Adolfo Alonso-Arroyo, Matthew J Page, Brian Hutton, Rafael Tabarés-Seisdedos, Rafael Aleixandre-Benavent
BACKGROUND: The management of comorbidity and multimorbidity poses major challenges to health services around the world. Analysis of scientific research in comorbidity and multimorbidity is limited in the biomedical literature. This study aimed to map global scientific research in comorbidity and multimorbidity to understand the maturity and growth of the area during the past decades. METHODS AND FINDINGS: This was a cross-sectional analysis of the Web of Science...
2018: PloS One
Jianguo Hong, Yixiao Bao, Aihuan Chen, Changchong Li, Li Xiang, Chuanhe Liu, Zhimin Chen, Deyu Zhao, Zhou Fu, Yunxiao Shang
OBJECTIVE: With increased industrialization and urbanization in China, pediatric asthma is becoming more prevalent. Despite a growing body of evidence, there remains a significant unmet need for adequate management of childhood asthma. The Subspecialty Group of Respiratory Diseases of the Society of Pediatrics, the Chinese Medical Association, and the editorial board of the Chinese Journal of Pediatrics have recently updated the "Guidelines for diagnosis and optimal management of asthma in children," first published in 2008...
December 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
Jean Joel Bigna, Jean Jacques Noubiap, Jobert Richie Nansseu, Leopold Ndemnge Aminde
BACKGROUND: Despite the recent increasing worldwide attention towards pulmonary hypertension (PH), its epidemiology remains poorly described in Africa. Accordingly, we performed a systematic review and meta-analysis of PH prevalence, incidence and etiologies in Africa. METHODS: We searched PubMed, EMBASE, African Journals Online, and Africa Index Medicus. Published observational studies until September 20, 2017, including adult participants residing in Africa were considered...
December 8, 2017: BMC Pulmonary Medicine
Bashiru Garba, Abdul Rani Bahaman, Siti Khairani Bejo, Zunita Zakaria, Abdul Rahim Mutalib, Faruku Bande
INTRODUCTION: Leptospirosis is a zoonotic disease caused by a diverse pathogenic leptospira species and serovars. The disease is transmitted directly following contact with infected urine and other body fluids or indirectly after contact with water or soil contaminated with infected urine. OBJECTIVES: While a wide range of domestic and wild animals are known to be reservoirs of the disease, occupation, international travel and recreation are beginning to assume a center stage in the transmission of the disease...
February 2018: Acta Tropica
Z-M Liu, L A Tse, D Chan, C Wong, S Y S Wong
BACKGROUND/OBJECTIVES: Epidemiological studies suggest that sugar intake contributes to weight gain and increased risk of cardiovascular diseases (CVDs). However, this association is largely undefined in the elderly population. Our aim was to investigate the effect of sugar consumption on the subsequent changes in body fatness and CVD mortality in Chinese elderly. METHODS: A total of 2000 men and 2000 women aged ⩾65 years were recruited from 2001 to 2003. Dietary sugar intake was estimated based on a validated 329-item food frequency questionnaire and a local sugar database...
November 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Sibhatu Biadgilign, Tennyson Mgutshini, Demewoz Haile, Bereket Gebremichael, Yonatan Moges, Kelemu Tilahun
INTRODUCTION: Globally, overweight and obesity were estimated to cause 3.4 million deaths, 3.9% of years of life lost and 3.8% of disability-adjusted life years in 2010. Despite the fact that obesity and overweight is a problem of high-income countries, low- and middle-income countries (LMICs), in particular urban settings of sub-Saharan African countries, face the challenge of an increasing trend. The aim of this systematic review and meta-analysis will be to determine the prevalence of obesity and overweight individuals in sub-Saharan Africa and to help guide policy planners in the decision-making process for the increase in non-communicable diseases in Africa...
November 25, 2017: BMJ Open
S K Vasan, C Osmond, D Canoy, C Christodoulides, M J Neville, C Di Gravio, C H D Fall, F Karpe
BACKGROUND/OBJECTIVES: Fat distribution is a strong and independent predictor of type 2 diabetes (T2D) and cardiovascular disease (CVD) and is usually determined using conventional anthropometry in epidemiological studies. Dual-energy X-ray absorptiometry (DXA) can measure total and regional adiposity more accurately. Nonetheless, whether DXA provides more precise estimates of cardiovascular risk in relation to total and regional adiposity is not known. We determined the strength of the associations between DXA- and conventional anthropometry determined fat distribution and T2D and CVD risk markers...
November 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
C Carbone, G Piro, N Gaianigo, F Ligorio, R Santoro, V Merz, F Simionato, C Zecchetto, G Falco, G Conti, P T Kamga, M Krampera, F Di Nicolantonio, L De Franceschi, A Scarpa, G Tortora, D Melisi
BACKGROUND: Solid epidemiological evidences connect obesity with incidence, stage, and survival in pancreatic cancer. However, the underlying mechanistic basis linking adipocytes to pancreatic cancer progression remain largely elusive. We hypothesized that factors secreted by adipocytes could be responsible for epithelial-to-mesenchymal transition (EMT) induction and, in turn, a more aggressive phenotype in models of pancreatic preneoplastic lesions. METHODS: We studied the role of factors secreted by two adipogenic model systems from primary human Bone Marrow Stromal Cells (hBMSC) in an in vitro experimental cell transformation model system of human pancreatic ductal epithelial (HPDE) cell stably expressing activated KRAS (HPDE/KRAS),RESULTS:We measured a significant induction of EMT and aggressiveness in HPDE and HPDE/KRAS cell lines when cultured with medium conditioned by fully differentiated adipocytes (ADIPO(CM)) if compared with the same cells cultured with medium conditioned by hBMSC (hBMSC(CM)) from two different healthy donors...
November 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Max Knaapen, Johanna H van der Lee, Roel Bakx, Sarah-May L The, Ernst W E van Heurn, Hugo A Heij, Ramon R Gorter
INTRODUCTION: Based on epidemiological, immunological and pathology data, the idea that appendicitis is not necessarily a progressive disease is gaining ground. Two types are distinguished: simple and complicated appendicitis. Non-operative treatment (NOT) of children with simple appendicitis has been investigated in several small studies. So far, it is deemed safe. However, its effectiveness and effect on quality of life (QoL) have yet to be established in an adequately powered randomised trial...
November 15, 2017: BMJ Open
Stephanie Gängler, Konstantinos C Makris, Walid Bouhamra, Douglas W Dockery
The Eastern Mediterranean and the Middle Eastern regions are both understudied in terms of possible environmental health risks for their populations. Water scarcity and desalination treatment provide the general population of countries from these regions (e.g., Kuwait and Cyprus) with unique tap water characteristics. This study investigated the association between external (tap water and 24 h personal air samples) and internal (urine) THM exposure metrics that reflected information about THM-related habits and activities collected using questionnaires and time activity diaries...
October 18, 2017: Journal of Exposure Science & Environmental Epidemiology
Yasushi Tsujimoto, Yusuke Tsutsumi, Yuki Kataoka, Hiraku Tsujimoto, Yosuke Yamamoto, Davide Papola, Gordon H Guyatt, Shunichi Fukuhara, Toshi A Furukawa
INTRODUCTION: Many studies have indicated the impact of bias in dissemination and publication in medical research. Existence of such bias among clinical trials has been repeatedly pointed out, but it has not been well studied in the field of systematic reviews (SRs). We therefore aim to investigate whether or not time lag bias and publication bias in SRs based on statistical significance in results exist. In addition, we will examine at what stage of paper publication process such bias, if any, creeps in...
October 22, 2017: BMJ Open
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