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Coarsened exact matching

Khurshid Alam, Ajay Mahal
Globally, road traffic injuries accounted for about 1.36 million deaths in 2015 and are projected to become the fourth leading cause of disability-adjusted life years (DALYs) lost by 2030. One-fifth of these deaths occurred in South Asia where road traffic injuries are projected to increase by 144% by 2020. Despite this rapidly increasing disease burden there is limited evidence on the economic burden of road traffic injuries on households in South Asia. We applied a novel coarsened exact matching method to assess the household economic burden of road traffic injuries using nationally representative World Health Survey data from five South Asian countries- Bangladesh, India, Nepal, Pakistan and Sri Lanka collected during 2002-2003...
2016: PloS One
Aurélia Tison, Luis Sagaon-Teyssier, Caroline Sansonetti, Jean-François Blatier, Alain Paraponaris
PURPOSE: The aim of this study was to investigate whether the labor market mobility of a population of cancer survivors 2 years after diagnosis differed compared to the French general population by focusing on the differences between self-employed workers and salaried staff. METHODS: Coarsened exact matching was implemented to reduce the sampling bias introduced by the comparison of individuals from two different surveys. Then, labor market mobility was analyzed by estimating transition probability matrices from 2010 to 2012 under the framework of a continuous-time Markov technique and by estimating a two-step model...
August 31, 2016: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
Giorgio Bedogni, Andrea Mari, Alessandra De Col, Nicoletta Marazzi, Claudio Tiribelli, Melania Manco, Alessandro Sartorio
BACKGROUND: No study so far has evaluated the relationship between insulin secretion (ISEC) and insulin sensitivity (ISEN) in pediatric nonalcoholic fatty liver disease (NAFLD). We evaluated the relationship between ISEC and ISEN in young obese patients with and without NAFLD. METHODS: We matched 401 NAFLD(+) and 595 NAFLD(-) children by sex (same), age (≤1 year), pubertal status (same), and body mass index (BMI; ≤0.05 standard deviation scores) using coarsened exact matching...
August 19, 2016: Childhood Obesity
Kun-Der Lin, Chun-Yuh Yang, Mei-Yueh Lee, Shu-Chen Ho, Ching-Kuan Liu, Shyi-Jang Shin
OBJECTIVE: We studied the association between the statin dosage and the risk of Parkinson disease (PD) in diabetic patients in Taiwan. METHODS: One million patients were randomly sampled from a National Health Insurance (NHI) database and followed from 2001 to 2008. Diabetic patients were screened by diagnosis of International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes, and statin dosage was determined according to the NHI pharmacy database...
October 2016: Annals of Neurology
Bradley Chen, Timothy J Halliday, Victoria Y Fan
BACKGROUND: The Haiti earthquake in 2010 resulted in 1.5 million internally displaced people (IDP), yet little is known about the impact of displacement on health. In this study, we estimate the impact of displacement on infant and child mortality and key health-behavior mechanisms. METHODS: We employ a difference-in-differences (DID) design with coarsened exact matching (CEM) to ensure comparability among groups with different displacement status using the 2012 Haiti Demographic and Health Survey (DHS)...
2016: International Journal for Equity in Health
Arnaud Hocquelet, Christophe Aubé, Agnès Rode, Victoire Cartier, Olivier Sutter, Anne Frederique Manichon, Jérome Boursier, Gisèle N'kontchou, Philippe Merle, Jean-Frédéric Blanc, Hervé Trillaud, Olivier Seror
BACKGROUND & AIMS: The primary aim of this study was to compare the rate of global radiofrequency ablation (RFA) failure between monopolar RFA (MonoRFA) versus NoTouch MultiBipolar RFA (NTmbpRFA) for small hepatocellular carcinoma (HCC) ⩽5cm in cirrhotic patients. METHODS: A total of 362 cirrhotic patients were included retrospectively across 4 French centres (181 per treatment group). Global RFA failure (primary RFA failure or local tumor progression) was analysed using the Kaplan Meier method after coarsened exact matching...
July 12, 2016: Journal of Hepatology
Nirali M Chakraborty, Mwende Mbondo, Joyce Wanderi
BACKGROUND: In Kenya, as in many low-income countries, the private sector is an important component of health service delivery and of providing access to preventive and curative health services. The Tunza Social Franchise Network, operated by Population Services Kenya, is Kenya's largest network of private providers, comprising 329 clinics. Franchised clinics are only one source of family planning (FP), and this study seeks to understand whether access to a franchise increases the overall use or provides another alternative for women who would have found FP services in the public sector...
2016: Journal of Health, Population, and Nutrition
Adrianna Murphy, Melitta Jakab, Martin McKee, Erica Richardson
It is well known that cardiovascular diseases (CVD) are a growing cause of mortality and morbidity in low-and middle-income countries (LMIC). While hypertension (HTN), a leading risk factor for CVD, can be easily managed with widely available medicines, there is a huge gap in treatment for HTN in many LMIC. One such country is Kyrgyzstan, where HTN is a major public health concern and adherence to medication is low. The reasons for low adherence in Kyrgyzstan are not well understood, but some evidence suggests that HTN medicines may be unaffordable for low-income families, resulting in inequitable access to HTN treatment...
June 16, 2016: Health Policy and Planning
Anusha M Vable, Ichiro Kawachi, David Canning, M Maria Glymour, Marcia P Jimenez, S V Subramanian
BACKGROUND: The Korean War GI Bill provided economic benefits for veterans, thereby potentially improving their health outcomes. However potential spillover effects on veteran wives have not been evaluated. METHODS: Data from wives of veterans eligible for the Korean War GI Bill (N = 128) and wives of non-veterans (N = 224) from the Health and Retirement Study were matched on race and coarsened birth year and childhood health using coarsened exact matching. Number of depressive symptoms in 2010 (average age = 78) were assessed using a modified, validated Center for Epidemiologic Studies-Depression Scale...
2016: PloS One
Ashley E Neiweem, Igor I Bussel, Joel S Schuman, Eric N Brown, Nils A Loewen
PURPOSE: To compare intraocular pressure (IOP) reduction and to develop a predictive surgery calculator based on the results between trabectome-mediated ab interno trabeculectomy in pseudophakic patients versus phacoemulsification combined with trabectome-mediated ab interno trabeculectomy in phakic patients. METHODS: This observational surgical cohort study analyzed pseudophakic patients who received trabectome-mediated ab interno trabeculectomy (AIT) or phacoemulsification combined with AIT (phaco-AIT)...
2016: PloS One
Matthias Arnold, David Beran, Hassan Haghparast-Bidgoli, Neha Batura, Baktygul Akkazieva, Aida Abdraimova, Jolene Skordis-Worrall
BACKGROUND: The increasing number of patients co-affected with Diabetes and TB may place individuals with low socio-economic status at particular risk of persistent poverty. Kyrgyz health sector reforms aim at reducing this burden, with the provision of essential health services free at the point of use through a State-Guaranteed Benefit Package (SGBP). However, despite a declining trend in out-of-pocket expenditure, there is still a considerable funding gap in the SGBP. Using data from Bishkek, Kyrgyzstan, this study aims to explore how households cope with the economic burden of Diabetes, TB and co-prevalence...
2016: BMC Health Services Research
Sung-Hee Jeon
The study examines long-term effects of cancer on the work status and annual earnings of cancer survivors who had a strong attachment to the labor market prior to their cancer diagnosis. We use linkage data combining Canadian 1991 Census microdata with administrative records from the Canadian Cancer Registry, the Vital Statistics Registry and longitudinal personal income tax records. We estimate changes in the magnitude of cancer effects during the first 3 years following the year of the diagnosis using a large sample of cancer survivors diagnosed at ages 25 to 61...
April 4, 2016: Health Economics
Jon-Patrick Allem, Steve Sussman, Daniel W Soto, Lourdes Baezconde-Garbanati, Jennifer B Unger
INTRODUCTION: Emerging adulthood (ages 18 to 25) is characterized by changes in relationships, education, work, and viewpoints on life. The prevalence of substance use also peaks during this period. Among emerging adults, Hispanics have a unique substance use profile, and have been described as a priority population for substance use prevention. Cross-sectional studies among Hispanics have shown that specific role transitions (e.g., starting or ending romantic relationships) were associated with substance use...
July 2016: Addictive Behaviors
Hardik A Parikh, Igor I Bussel, Joel S Schuman, Eric N Brown, Nils A Loewen
PURPOSE: To compare intraocular pressure (IOP) after trabectome-mediated ab interno trabeculectomy surgery in phakic patients (T) and trabectome with same session phacoemulsification (PT) using Coarsened Exact Matching. Although phacoemulsification is associated with IOP reduction when performed on its own, it is not known how much it contributes in PT. METHODS: Subjects were divided into phakic T and PT. Exclusion criteria were follow-up for <12 months and additional glaucoma surgery...
2016: PloS One
Anusha M Vable, David Canning, M Maria Glymour, Ichiro Kawachi, Marcia P Jimenez, Subu V Subramanian
PURPOSE: The Korean War GI Bill provided socioeconomic benefits to veterans; however, its association with health is unclear; we hypothesize GI Bill eligibility is associated with fewer depressive symptoms and smaller disparities. METHODS: Data from 246 Korean War GI Bill eligible veterans and 240 nonveterans from the Health and Retirement Study were matched on birth year, southern birth, race, height, and childhood health using coarsened exact matching. Number of depressive symptoms in 2010 (average age = 78 years) was assessed using a modified, validated Center for Epidemiologic Studies-Depression Scale, dichotomized to reflect elevated depressive symptoms...
February 2016: Annals of Epidemiology
Seyed Saeed Hashemi Nazari, Mehdi Noroozi, Hamid Soori, Alireza Noroozi, Yadollah Mehrabi, Ahmad Hajebi, Hamid Sharifi, Peter Higgs, Ali Mirzazadeh
BACKGROUND: Needle and syringe programs (NSPs) are widely used to reduce harms associated with drug injecting. This study assessed the effect of facility-based (on-site services at drop-in centre) and outreach models of NSP on injection risk behaviours. METHODS: Self-reported data from 455 people who injected drugs (PWID) during 2014 in Kermanshah, Iran, were examined to measure demographic characteristics and risk behaviors. Self-reported and program data were also assessed to identify their main source of injection equipment...
January 2016: International Journal on Drug Policy
Samantha L Savitch, Paresh C Shah
OBJECTIVE: To assess trends in utilization and perioperative outcomes of laparoscopic and open abdominal wall hernia repair. METHODS: Using the ACS-NSQIP database between 2009 and 2012, patients were identified as having an ICD-9 diagnosis of an umbilical, ventral, or incisional hernia as well as a CPT code for a laparoscopic or open abdominal wall hernia repair. A coarsened exact matching procedure was utilized to create a matched cohort to mitigate selection bias...
August 2016: Surgical Endoscopy
Anthony Pozzessere, Jonathan Grotts, Stephen Kaminski
Patients on anticoagulation are at increased risk for intracranial hemorrhage (ICH) after trauma. This is important for geriatric trauma patients, who are increasing in number, frequently fall, and often take anticoagulants. This study sought to evaluate whether prehospital use of dabigatran, a newer anticoagulant, is associated with outcome differences in geriatric trauma patients suffering falls when compared with warfarin. The registry of a Level II community trauma center was used to identify 247 patients aged 65 and older who sustained a fall while taking prehospital dabigatran or warfarin admitted between December 2010 and March 2014...
October 2015: American Surgeon
Sahaja Acharya, Stephanie M Perkins, Todd DeWees, Benjamin W Fischer-Valuck, David G Mutch, Matthew A Powell, Julie K Schwarz, Perry W Grigsby
PURPOSE: To assess the use of brachytherapy (BT) with or without external beam radiation (EBRT) in inoperable stage I endometrial adenocarcinoma in the United States and to determine the effect of BT on overall survival (OS) and cause-specific survival (CSS). METHODS AND MATERIALS: Data between 1998 and 2011 from the National Cancer Institute's Surveillance, Epidemiology and End Results database were analyzed. Coarsened exact matching was used to adjust for differences in age and grade between patients who received BT and those who did not...
November 1, 2015: International Journal of Radiation Oncology, Biology, Physics
Christian Hametner, Peter Ringleb, Lars Kellert
BACKGROUND: Sex differences in the structural connectome of the brain are clinically highly relevant, but they have mostly been neglected in stroke trials. We investigated the impact of the interaction sex-by-hemisphere on outcome in stroke patients after intravenous thrombolysis (IVT). METHODS: This is an observational study based on consecutively collected supratentorial stroke patients treated with IVT (n = 1,231). The 3-month modified Rankin scale (mRS) was estimated by adjusted binary (mRS 0-2 for good outcome) and ordinal regression analysis...
2015: Cerebrovascular Diseases
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