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Coarsened exact matching

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https://www.readbyqxmd.com/read/28796731/quality-of-local-excision-for-rectal-neoplasms-using-transanal-endoscopic-microsurgery-versus-transanal-minimally-invasive-surgery-a-multi-institutional-matched-analysis
#1
Lawrence Lee, Kimberly Edwards, Iain A Hunter, John E Hartley, Sam B Atallah, Matthew R Albert, James Hill, John R Monson
BACKGROUND: There are no data comparing the quality of local excision of rectal neoplasms using transanal endoscopic microsurgery and transanal minimally invasive surgery. OBJECTIVE: The purpose of this study was to compare the incidence of tumor fragmentation and positive margins for patients undergoing local excision of benign and malignant rectal neoplasms using transanal endoscopic microsurgery versus transanal minimally invasive surgery. DESIGN: This was a multi-institutional cohort study using coarsened exact matching...
September 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28733710/a-matched-case-control-study-on-early-and-late-results-of-carotid-endarterectomy-performed-in-young-patients
#2
Walter Dorigo, Aaron Fargion, Elena Giacomelli, Giulia Bassoli, Raffaele Pulli, Giovanni Pratesi, Gabriele Piffaretti, Carlo Pratesi
OBJECTIVE: The aim of the study was to describe the perioperative and long-term results of carotid endarterectomy (CEA) in patients aged 60 or less and compare them to patients of more advanced age in a retrospective single-centre case-control study. METHODS: From January 1996 to December 2014, 5893 consecutive CEAs were performed in our institution. Data concerning these interventions were prospectively inserted in a dedicated database. A retrospective analysis of that database was performed and 457 interventions performed in patients aged 60 or less were found (group 1)...
July 21, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28728577/integrating-data-from-randomized-controlled-trials-and-observational-studies-to-predict-the-response-to-pregabalin-in-patients-with-painful-diabetic-peripheral-neuropathy
#3
Joe Alexander, Roger A Edwards, Alberto Savoldelli, Luigi Manca, Roberto Grugni, Birol Emir, Ed Whalen, Stephen Watt, Marina Brodsky, Bruce Parsons
BACKGROUND: More patient-specific medical care is expected as more is learned about variations in patient responses to medical treatments. Analytical tools enable insights by linking treatment responses from different types of studies, such as randomized controlled trials (RCTs) and observational studies. Given the importance of evidence from both types of studies, our goal was to integrate these types of data into a single predictive platform to help predict response to pregabalin in individual patients with painful diabetic peripheral neuropathy (pDPN)...
July 20, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28727523/from-lead-exposure-in-early-childhood-to-adolescent-health-a-chicago-birth-cohort
#4
Alix S Winter, Robert J Sampson
OBJECTIVES: To assess the relationships between childhood lead exposure and 3 domains of later adolescent health: mental, physical, and behavioral. METHODS: We followed a random sample of birth cohort members from the Project on Human Development in Chicago Neighborhoods, recruited in 1995 to 1997, to age 17 years and matched to childhood blood test results from the Department of Public Health. We used ordinary least squares regression, coarsened exact matching, and instrumental variables to assess the relationship between average blood lead levels in childhood and impulsivity, anxiety or depression, and body mass index in adolescence...
September 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28690339/the-tenure-gap-in-electoral-participation-instrumental-motivation-or-selection-bias-comparing-homeowners-and-tenants-across-four-housing-regimes
#5
Stéfanie André, Caroline Dewilde, Ruud Luijkx
Integrating housing tenure in Instrumental Motivation Theory predicts a tenure gap in electoral participation, as homeowners would be more motivated to vote compared with tenants. The empirical question is whether this effect is causal or rather due to selection into different housing tenures. This question is tackled using coarsened exact matching (CEM) on data for 19 countries, allowing us to better control for endogeneity. Even then, homeowners are found to vote more often than tenants. This association is stronger in countries characterized by a strong pro-homeownership ideology and/or where the financialization of housing markets turned houses into assets...
June 2017: International Journal of Comparative Sociology
https://www.readbyqxmd.com/read/28688519/comparative-assessment-of-in-hospital-trauma-mortality-at-a-south-african-trauma-center-and-matched-patients-treated-in-the-united-states
#6
Richard T Spence, John W Scott, Adil Haider, Pradeep H Navsaria, Andrew J Nicol
BACKGROUND: The unacceptably high rate of death and disability due to injury in Sub-Saharan Africa is alarming. The objective of this work was to compare mortality rates between severely injured trauma patients at a high-volume trauma center in South Africa with matched patients in the United States. METHODS: Clinical databases from the Groote Schuur Hospital for patients treated in Cape Town, South Africa and the American College of Surgeon's National Trauma Databank for patients treated at large academic trauma centers in the United States were used...
September 2017: Surgery
https://www.readbyqxmd.com/read/28624032/epidural-analgesia-for-traumatic-rib-fractures-is-associated-with-worse-outcomes-a-matched-analysis
#7
Katherine M McKendy, Lawrence F Lee, Kerianne Boulva, Dan L Deckelbaum, David S Mulder, Tarek S Razek, Jeremy R Grushka
BACKGROUND: The optimal method of pain control for patients with traumatic rib fractures is unknown. The aim of this study was to determine the effect of epidural analgesia on respiratory complications and in-hospital mortality in patients with rib fractures. METHODS: Adult patients at a level I trauma center with ≥1 rib fracture from blunt trauma were included (2004-2013). Those with a blunt-penetrating mechanism, traumatic brain injury, or underwent a laparotomy or thoracotomy were excluded...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28594723/is-there-a-role-for-oral-antibiotic-preparation-alone-before-colorectal-surgery-acs-nsqip-analysis-by-coarsened-exact-matching
#8
Richard Garfinkle, Jad Abou-Khalil, Nancy Morin, Gabriela Ghitulescu, Carol-Ann Vasilevsky, Philip Gordon, Marie Demian, Marylise Boutros
BACKGROUND: Recent studies demonstrated reduced postoperative complications using combined mechanical bowel and oral antibiotic preparation before elective colorectal surgery. OBJECTIVE: The aim of this study was to assess the impact of these 2 interventions on surgical site infections, anastomotic leak, ileus, major morbidity, and 30-day mortality in a large cohort of elective colectomies. DESIGN: This is a retrospective comparison of 30-day outcomes using the American College of Surgeons National Surgical Quality Improvement Program colectomy-targeted database with coarsened exact matching...
July 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28574794/health-care-utilization-and-associated-factors-in-gauteng-province-south-africa
#9
Admas Abera Abaerei, Jabulani Ncayiyana, Jonathan Levin
BACKGROUND: More than a billion people, mainly in low- and middle-income countries, are unable to access needed health-care services for a variety of reasons. Possible factors influencing health-care utilization include socio-demographic and economic factors such as age, sex, education, employment and income. However, different studies have showed mixed results. Moreover, there are limited studies on health-care utilization. OBJECTIVE: This study aimed to determine health-care utilization and associated factors among all residents aged 18 or over in Gauteng province, South Africa...
2017: Global Health Action
https://www.readbyqxmd.com/read/28546325/reciprocal-interaction-of-24-hour-blood-pressure-variability-and-systolic-blood-pressure-on-outcome-in-stroke-thrombolysis
#10
Lars Kellert, Christian Hametner, Niaz Ahmed, Geraldine Rauch, Mary J MacLeod, Francesco Perini, Kennedy R Lees, Peter A Ringleb
BACKGROUND AND PURPOSE: Significance and management of blood pressure (BP) changes in acute stroke care are unclear. Here, we aimed to investigate the impact of 24-hour BP variability (BPV) on outcome in patients with acute ischemic stroke treated with intravenous thrombolysis. METHODS: From the Safe Implementation of Treatment in Stroke International Stroke Thrombolysis registry, 28 976 patients with documented pre-treatment systolic BP at 2 and 24 hours were analyzed...
July 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28535362/tympanostomy-tube-placement-vs-medical-management-for-recurrent-acute-otitis-media-in-tricare-insured-children
#11
Nikhila Raol, Meesha Sharma, Emily F Boss, Wei Jiang, John W Scott, Peter Learn, Joel S Weissman
Objective To compare number of infections and health care utilization in children insured by TRICARE with recurrent acute otitis media (RAOM) managed surgically with tympanostomy tube (TT) placement compared with those managed medically. Study Design Retrospective matched cohort study. Setting TRICARE claims database from 2006 to 2010. Subjects and Methods We matched TRICARE beneficiaries ≤5 years of age diagnosed with RAOM who underwent TT placement with those managed medically using 1:1 coarsened-exact matching on age, sex, race, sponsor rank, and region...
May 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28424132/outcomes-of-recreational-activity-associated-trauma-in-elderly-persons-on-blood-thinning-medications
#12
Zachary M DeBoard, Jonathan Grotts, Lisa Ferrigno
With increasing life expectancy, the elderly are participating in recreational activities traditionally pursued by younger persons. Elderly patients have many reasons for worse outcomes after trauma, one of which may be the rising use of anticoagulant and/or antiplatelet medications. This study aimed to determine whether preinjury use of these agents yielded worse outcomes in geriatric patients injured during high-impact recreational activities. The National Trauma Data Bank was reviewed from 2007 to 2010 for patients ≥65 years admitted to Level I or II trauma centers with ICD-9 E-codes for specific mechanisms of injury...
April 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28379315/associations-of-continuity-and-change-in-early-neighborhood-poverty-with-adult-cardiometabolic-biomarkers-in-the-united-states-results-from-the-national-longitudinal-study-of-adolescent-to-adult-health-1995-2008
#13
Adam M Lippert, Clare Rosenfeld Evans, Fahad Razak, S V Subramanian
Limitations of extant research on neighborhood disadvantage and health include general reliance on point-in-time neighborhood measures and sensitivity to residential self-selection. Using data from the US Census and the 1995-2008 National Longitudinal Study of Adolescent to Adult Health, we applied conventional methods and coarsened exact matching to assess how cardiometabolic health varies among those entering, exiting, or remaining in poor and nonpoor neighborhoods. Within the full sample (n = 11,767), we found significantly higher systolic and diastolic blood pressures among those who entered or consistently lived in poor neighborhoods relative to those who never lived in poor neighborhoods...
May 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28216362/endovascular-aneurysm-repair-patients-who-are-lost-to-follow-up-have-worse-outcomes
#14
Caitlin W Hicks, Devin S Zarkowsky, Ian C Bostock, David H Stone, James H Black, Jens Eldrup-Jorgensen, Philip P Goodney, Mahmoud B Malas
BACKGROUND: Society for Vascular Surgery practice guidelines recommend 1- and 12-month follow-up with computed tomography imaging for the year after endovascular aneurysm repair (EVAR). We describe the incidence, risk factors, and outcomes of EVAR patients who are lost to follow-up (LTF). METHODS: All patients undergoing elective EVAR in the Vascular Quality Initiative (VQI) data set (January 2003-December 2015) were stratified according to long-term follow-up method (in-person vs phone call vs LTF)...
June 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28190669/insurance-status-affects-postoperative-morbidity-and-complication-rate-after-shoulder-arthroplasty
#15
Xinning Li, David R Veltre, Antonio Cusano, Paul Yi, David Sing, Joel J Gagnier, Josef K Eichinger, Andrew Jawa, Asheesh Bedi
BACKGROUND: Shoulder arthroplasty is an effective procedure for managing patients with shoulder pain secondary to end-stage arthritis. Insurance status has been shown to be a predictor of patient morbidity and mortality. The current study evaluated the effect of patient insurance status on perioperative outcomes after shoulder replacement surgery. METHODS: Data between 2004 and 2011 were obtained from the Nationwide Inpatient Sample. Analysis included patients undergoing shoulder arthroplasty (partial, total, and reverse) procedures determined by International Classification of Disease, 9th Revision procedure codes...
August 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28147207/discrimination-and-telomere-length-among-older-adults-in-the-united-states
#16
Sze Yan Liu, Ichiro Kawachi
OBJECTIVES: Chronic stress from experiencing discrimination can lead to long-term changes in psychological and physiologic responses, including shorter leukocyte telomere length. We examined the association between leukocyte telomere length and variations in the association by race or type of discrimination. METHODS: Our study consisted of 3868 US-born non-Hispanic black (hereinafter, black) and non-Hispanic white (hereinafter, white) adult participants from the 2008 Health and Retirement Study biomarker sample with complete sociodemographic and discrimination information...
March 2017: Public Health Reports
https://www.readbyqxmd.com/read/28139665/vitamin-d-receptor-activator-use-and-cause-specific-death-among-dialysis-patients-a-nationwide-cohort-study-using-coarsened-exact-matching
#17
Yoshitsugu Obi, Takayuki Hamano, Atsushi Wada, Yoshiharu Tsubakihara
Vitamin D receptor activators (VDRA) may exert pleiotropic effects on cardiovascular disease, malignancy, and infections among dialysis patients, but recent studies have mainly focused on cardiovascular outcomes. Among 8,675 patients who started dialysis in 2007 and who survived until January 1, 2010, listed in the Renal Data Registry of the Japanese Society for Dialysis Therapy, 5,365 VDRA users were matched to 3,203 non-users based on clinically relevant variables at the end of 2009 using the coarsened exact matching procedure...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28053837/causal-effect-of-self-esteem-on-cigarette-smoking-stages-in-adolescents-coarsened-exact-matching-in-a-longitudinal-study
#18
Ahmad Khosravi, Asghar Mohammadpoorasl, Kourosh Holakouie-Naieni, Mahmood Mahmoodi, Ali Akbar Pouyan, Mohammad Ali Mansournia
OBJECTIVES: Identification of the causal impact of self-esteem on smoking stages faces seemingly insurmountable problems in observational data, where self-esteem is not manipulable by the researcher and cannot be assigned randomly. The aim of this study was to find out if weaker self-esteem in adolescence is a risk factor of cigarette smoking in a longitudinal study in Iran. METHODS: In this longitudinal study, 4,853 students (14-18 years) completed a self-administered multiple-choice anonym questionnaire...
December 2016: Osong Public Health and Research Perspectives
https://www.readbyqxmd.com/read/28031310/the-effects-of-new-york-city-s-coordinated-public-health-programmes-on-mortality-through-2011
#19
Peter Muennig, Ryan Masters, Daniel Vail, Jahn Hakes
BACKGROUND: In 2003, New York City (NYC) implemented a series of coordinated policies designed to reduce non-communicable disease. METHODS: We used coarsened exact matching (CEM) of individuals living inside and outside NYC between the years of 1992-2000 and 2002-10 to estimate difference-in-difference survival time models, a quasi-experimental approach. We also fitted age-period-cohort (APC) models to explore mortality impacts by gender, race, age, borough and cause of death over this same time period...
December 28, 2016: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28028149/sex-and-stroke-in-thrombolyzed-patients-and-controls
#20
Christian Hametner, Rachael L MacIsaac, Lars Kellert, Azmil H Abdul-Rahim, Peter A Ringleb, Kennedy R Lees
BACKGROUND AND PURPOSE: We hypothesized that any sex-related difference in outcome poststroke is explained by other prognostic factors and that the response to intravenous recombinant tissue-type plasminogen activator (r-tPA) is equal in males and females after adjustment for such factors. METHODS: We accessed an independent collection of randomized clinical trials-the VISTA (Virtual International Stroke Trials Archive). Data were preprocessed by selecting complete cases (n=8028) and matching females to males (coarsened exact matching, n=4575, 24...
February 2017: Stroke; a Journal of Cerebral Circulation
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