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Propensity analysis

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https://www.readbyqxmd.com/read/28918203/short-term-effects-of-preoperative-beta-blocker-use-for-isolated-coronary-artery-bypass-grafting-a-systematic-review-and-meta-analysis
#1
Liangshan Wang, Hong Wang, Xiaotong Hou
OBJECTIVE: The use of preoperative beta-blockers has been used as a quality standard for patients undergoing coronary artery bypass grafting (CABG). However, the benefits of beta-blockers use before CABG remain controversial. We performed a systematic review and meta-analysis to investigate the short-term effects of preoperative beta-blocker use for patients undergoing isolated CABG. METHODS: We searched PubMed, Embase, and the Cochrane Library for English articles published from inception to August 16, 2016...
August 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28917684/role-of-low-endothelial-shear-stress-and-plaque-characteristics-in-the-prediction-of-nonculprit-major-adverse-cardiac-events-the-prospect-study
#2
Peter H Stone, Akiko Maehara, Ahmet Umit Coskun, Charles C Maynard, Marina Zaromitydou, Gerasimos Siasos, Ioannis Andreou, Dimitris Fotiadis, Kostas Stefanou, Michail Papafaklis, Lampros Michalis, Alexandra J Lansky, Gary S Mintz, Patrick W Serruys, Charles L Feldman, Gregg W Stone
OBJECTIVES: This study sought to determine whether low endothelial shear stress (ESS) adds independent prognostication for future major adverse cardiac events (MACE) in coronary lesions in patients with high-risk acute coronary syndrome (ACS) from the United States and Europe. BACKGROUND: Low ESS is a proinflammatory, proatherogenic stimulus associated with coronary plaque development, progression, and destabilization in human-like animal models and in humans. Previous natural history studies including baseline ESS characterization investigated low-risk patients...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28917515/cerebral-embolic-protection-during-transfemoral-aortic-valve-replacement-significantly-reduces-death-and-stroke-compared-with-unprotected-procedures
#3
Julia Seeger, Birgid Gonska, Markus Otto, Wolfgang Rottbauer, Jochen Wöhrle
OBJECTIVES: The aim of this study was to evaluate the impact of cerebral embolic protection on stroke-free survival in patients undergoing transfemoral aortic valve replacement (TAVR). BACKGROUND: Imaging data on cerebral embolic protection devices have demonstrated a significant reduction in number and volume of cerebral lesions. METHODS: A total of 802 consecutive patients were enrolled. The Sentinel cerebral embolic protection device (Claret Medical Inc...
September 7, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28917031/the-effect-of-propensity-to-trust-and-perceptions-of-trustworthiness-on-trust-behaviors-in-dyads
#4
Gene M Alarcon, Joseph B Lyons, James C Christensen, Samantha L Klosterman, Margaret A Bowers, Tyler J Ryan, Sarah A Jessup, Kevin T Wynne
Research on trust has burgeoned in the last few decades. Despite the growing interest in trust, little is known about trusting behaviors in non-dichotomous trust games. The current study explored propensity to trust, trustworthiness, and trust behaviors in a new computer-mediated trust relevant task. We used multivariate multilevel survival analysis (MMSA) to analyze behaviors across time. Results indicated propensity to trust did not influence trust behaviors. However, trustworthiness perceptions influenced initial trust behaviors and trust behaviors influenced subsequent trustworthiness perceptions...
September 15, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28917012/operative-and-short-term-oncologic-outcomes-of-laparoscopic-versus-open-liver-resection-for-colorectal-liver-metastases-located-in-the-posterosuperior-liver-a-propensity-score-matching-analysis
#5
Masayuki Okuno, Claire Goumard, Takashi Mizuno, Kiyohiko Omichi, Ching-Wei D Tzeng, Yun Shin Chun, Thomas A Aloia, Jason B Fleming, Jeffrey E Lee, Jean-Nicolas Vauthey, Claudius Conrad
BACKGROUND: Laparoscopic resection (LLR) of colorectal liver metastases (CRLM) located in the posterosuperior liver (segments 4a, 7, and 8) is challenging but has become more practical recently due to progress in operative techniques. We aimed to compare tumor-specific, perioperative, and short-term oncological outcomes after LLR and open liver resection (OLR) for CRLM. METHODS: Patients who underwent curative resection of CRLM with at least 1 tumor in the posterosuperior liver during 2012-2015 were analyzed...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916962/effects-of-cholecystectomy-on-recurrent-biliary-complications-after-endoscopic-treatment-of-common-bile-duct-stone-a-population-based-cohort-study
#6
Chi-Tung Cheng, Chun-Nan Yeh, Kun-Chun Chiang, Ta-Sen Yeh, Kuan-Fu Chen, Shao-Wei Chen
BACKGROUND: The aim of this study was to evaluate the benefits of cholecystectomy on mitigating recurrent biliary complications following endoscopic treatment of common bile duct stone. METHODS: We used the data from the Taiwan National Health Insurance Research Database to conduct a population-based cohort study. Among 925 patients who received endoscopic treatment for choledocholithiasis at the first admission from 2005 to 2012, 422 received subsequent cholecystectomy and 503 had gallbladder (GB) left in situ...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916920/does-delayed-esophagectomy-after-endoscopic-resection-affect-outcomes-in-patients-with-stage-t1-esophageal-cancer-a-propensity-score-based-analysis
#7
Shengfei Wang, Yangle Huang, Juntao Xie, Lingdun Zhuge, Longlong Shao, Jiaqing Xiang, Yawei Zhang, Yihua Sun, Hong Hu, Sufeng Chen, Toni Lerut, James D Luketich, Jie Zhang, Haiquan Chen
BACKGROUND: Although endoscopic resection (ER) may be sufficient treatment for early-stage esophageal cancer, additional treatment is recommended when there is a high risk of cancer recurrence. It is unclear whether delaying esophagectomy by performing and assessing the success of ER affects outcomes as compared with immediate esophagectomy without ER. Additionally, long-term survival after sequential ER and esophagectomy required further investigation. METHODS: Between 2011 and 2015, 48 patients with stage T1 esophageal cancer underwent esophagectomy after ER with curative intent at our institution...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916893/safety-and-prognostic-impact-of-prophylactic-laparoscopic-superior-mesenteric-vein-no-14v-lymph-node-dissection-for-lower-third-gastric-cancer-a-propensity-score-matched-case-control-study
#8
Qi-Yue Chen, Chao-Hui Zheng, Ping Li, Jian-Wei Xie, Jia-Bin Wang, Jian-Xian Lin, Jun Lu, Long-Long Cao, Mi Lin, Ru-Hong Tu, Ze-Ning Huang, Ju-Li Lin, Chang-Ming Huang
AIM: To investigate oncologic efficacy of prophylactic laparoscopic superior mesenteric vein (No. 14v) lymph node (LN) dissection for lower-third gastric cancer (LTGC). METHODS: We retrospectively collected data from 757 patients who underwent laparoscopic-assisted distal gastrectomy for LTGC. Of these patients, 102 underwent 14v LN dissection (14vD+ group), and the remaining 655 patients did not undergo 14v LN dissection (14vD- group). The outcomes were compared using a 1:1 propensity score matching method...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916604/coronary-perforation-complicating-percutaneous-coronary-intervention-in-patients-with-a-history-of-coronary-artery-bypass-surgery-an-analysis-of-309-perforation-cases-from-the-british-cardiovascular-intervention-society-database
#9
Tim Kinnaird, Richard Anderson, Nick Ossei-Gerning, James Cockburn, Alex Sirker, Peter Ludman, Mark de Belder, Thomas W Johnson, Samuel Copt, Azfar Zaman, Mamas A Mamas
BACKGROUND: The evidence base for coronary perforation (CP) occurring during percutaneous coronary intervention in patients with a history of coronary artery bypass surgery (PCI-CABG) is limited and the long-term effects unclear. Using a national PCI database, the incidence, predictors, and outcomes of CP during PCI-CABG were defined. METHODS AND RESULTS: Data were analyzed on all PCI-CABG procedures performed in England and Wales between 2005 and 2013. Multivariate logistic regressions and propensity scores were used to identify predictors of CP and its association with outcomes...
September 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28916274/do-urinary-cystine-parameters-predict-clinical-stone-activity
#10
Justin I Friedlander, Jodi A Antonelli, Noah E Canvasser, Monica S C Morgan, Daniel Mollengarden, Sara Best, Margaret S Pearle
PURPOSE: An accurate urinary predictor of stone recurrence would be clinically advantageous for patients with cystinuria. A proprietary assay from Litholink® (Chicago, IL) measures cystine capacity as a potentially more reliable estimate of stone-forming propensity. The recommended capacity level to prevent stone formation, >150 mg/L, has not been directly correlated with clinical stone activity. Herein we investigated the relationship between urinary cystine parameters and clinical stone activity...
September 12, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28915689/different-long-term-oncologic-outcomes-after-radical-surgical-resection-for-neuroendocrine-carcinoma-and-adenocarcinoma-of-the-stomach
#11
Jian-Wei Xie, Jun Lu, Jian-Xian Lin, Chao-Hui Zheng, Ping Li, Jia-Bin Wang, Qi-Yue Chen, Long-Long Cao, Mi Lin, Ru-Hong Tu, Chang-Ming Huang
PURPOSE: To explore differences in long-term outcomes between gastric neuroendocrine carcinoma (GNEC) and gastric adenocarcinoma (GAC). METHODS: One hundred GNEC patients and 3089 GAC patients were enrolled. Differences in long-term outcomes between the groups were analyzed by 1:2 propensity score matching. RESULTS: Statistically significant differences between the groups were noted in terms of gender, American Society of Anesthesiologists score, tumor size, T stage, N stage, TNM stage and surgical approach...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915520/-effect-of-the-disease-management-program-on-hba1c-value-in-type-2-diabetes-mellitus-patients-a-retrospective-comparison-between-disease-management-programs-and-standard-care
#12
Stefan Wiefarn, Karel Kostev, Christian Heumann, Anja Rettelbach
Background This retrospective study aims to measure the effect of the disease management program (DMP) for type 2 diabetes mellitus (T2DM) patients on HbA1c value within Germany. Methods This study is based on patient data from the Disease Analyzer panel (IMS Health). An adequate control group was created using 2:1 propensity score matching. After matching, the analysis included 14 759 patients. Of these, 5875 participated in a DMP while 8884 received standard care. The DMP effect was estimated on the basis of the matched data, using an unpaired t-test...
September 15, 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28915445/exploring-the-association-of-rs10490924-polymorphism-with-age-related-macular-degeneration-an-in-silico-approach
#13
Farhad Jahanfar, Hamed Hamishehkar
The polymorphism rs10490924 (A69S) in the age-related maculopathy susceptibility 2 (ARMS2) gene is highly associated with age-related macular degeneration, which is the leading cause of blindness among the elderly population. The ARMS2 gene encodes a putative small (11kDa) protein, which the function and localization of the ARMS2 protein remain under debate. For a better understanding of functional impacts of the A69S mutation, we performed a detailed analysis of the ARMS2 sequence with a broad set of bioinformatics tools...
September 6, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28915416/methodological-approaches-in-analysing-observational-data-a-practical-example-on-how-to-address-clustering-and-selection-bias
#14
Diana Trutschel, Rebecca Palm, Bernhard Holle, Michael Simon
BACKGROUND: Because not every scientific question on effectiveness can be answered with randomised controlled trials, research methods that minimise bias in observational studies are required. Two major concerns influence the internal validity of effect estimates: selection bias and clustering. Hence, to reduce the bias of the effect estimates, more sophisticated statistical methods are needed. AIM: To introduce statistical approaches such as propensity score matching and mixed models into representative real-world analysis and to conduct the implementation in statistical software R to reproduce the results...
July 20, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28915393/the-comparative-effectiveness-of-noninvasive-and-invasive-ventilation-in-patients-with-pneumonia
#15
Mihaela S Stefan, Aruna Priya, Penelope S Pekow, Tara Lagu, Jay S Steingrub, Nicholas S Hill, Brian H Nathanson, Peter K Lindenauer
PURPOSE: To compare the outcomes of patients hospitalized with pneumonia treated with noninvasive ventilation (NIV) and invasive mechanical ventilation (IMV). MATERIALS AND METHODS: Using the HealthFacts multihospital electronic medical record database, we included patients hospitalized with a diagnosis of pneumonia and treated with NIV or IMV. We developed a propensity model for receipt of initial NIV and assessed the outcomes in a propensity-matched cohort, and in a covariate adjusted and propensity score weighted models...
May 23, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28915242/a-retrospective-cost-analysis-of-additional-homeopathic-treatment-in-germany-long-term-economic-outcomes
#16
Julia K Ostermann, Claudia M Witt, Thomas Reinhold
OBJECTIVES: This study aimed to provide a long-term cost comparison of patients using additional homeopathic treatment (homeopathy group) with patients using usual care (control group) over an observation period of 33 months. METHODS: Health claims data from a large statutory health insurance company were analysed from both the societal perspective (primary outcome) and from the statutory health insurance perspective (secondary outcome). To compare costs between patient groups, homeopathy and control patients were matched in a 1:1 ratio using propensity scores...
2017: PloS One
https://www.readbyqxmd.com/read/28914483/the-thermodynamic-basis-of-the-fuzzy-interaction-of-an-intrinsically-disordered-protein
#17
San Hadži, Andrej Mernik, Črtomir Podlipnik, Remy Loris, Jurij Lah
Many intrinsically disordered proteins (IDP) that fold upon binding retain conformational heterogeneity in IDP-target complexes. The thermodynamics of such fuzzy interactions is poorly understood. Here we introduce a thermodynamic framework, based on analysis of ITC and CD spectroscopy data, that provides experimental description of IDP association in terms of folding and binding contributions which can be predicted using sequence folding propensities and molecular modeling. We show how IDP can modulate the entropy and enthalpy by adapting their bound-state structural ensemble to achieve optimal binding...
September 15, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28913176/propensity-score-matched-comparison-of-intensity-modulated-radiation-therapy-vs-stereotactic-body-radiation-therapy-for-localized-prostate-cancer-a-survival-analysis-from-the-national-cancer-database
#18
Anthony Ricco, Alexandra Hanlon, Rachelle Lanciano
PURPOSE: No direct comparisons between extreme hypofractionation and conventional fractionation have been reported in randomized trials for the treatment of localized prostate cancer. The goal of this study is to use a propensity score matched (PSM) analysis with the National Cancer Database (NCDB) for the comparison of stereotactic body radiation therapy (SBRT) and intensity modulated radiation therapy (IMRT) for organ confined prostate cancer. METHODS: Men with localized prostate cancer treated with radiation dose ≥72 Gy for IMRT and ≥35 Gy for SBRT to the prostate only were abstracted from the NCDB...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28912511/outcomes-of-adjuvant-epithelial-growth-factor-receptor-tyrosine-kinase-inhibitors-egfr-tkis-treatment-for-egfr-mutant-non-small-cell-lung-cancer-a-propensity-score-analysis
#19
Shufen Zhao, Ge Ma, Jing Guo, Aiping Ding, Shasha Wang, Guohong Yu, Lei Chen, Yonggang Yuan, Wenjing Xiao
Small molecule tyrosine kinase inhibitors (TKIs) have transformed the management of advanced non-small-cell lung cancer (NSCLC) harboring activating epithelial growth factor receptor (EGFR) mutations, while the efficacy of TKIs in the adjuvant setting remains unclear. We collected the data of 209 EGFR-mutant NSCLC patients receiving complete resection from 2010 to 2013. Study end points were disease-free survival (DFS) and overall survival (OS). Among the eligible patients, 41 (19.6%) received EGFR TKIs in the adjuvant treatment...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912339/reproductive-and-metabolic-features-during-puberty-in-sons-of-women-with-polycystic-ovary-syndrome
#20
Nicolas Crisosto, Barbara Echiburú, Manuel Maliqueo, Marta Luchsinger, Pedro Rojas, Sergio Recabarren, Teresa Sir-Petermann
CONTEXT: Intrauterine life may be implicated in the origin of polycystic cvary syndrome (PCOS) modifying the endocrine and metabolic function of children born to PCOS mothers independently of the genetic inheritance and gender. The aim of the present study was to evaluate the reproductive and metabolic function in sons of women with PCOS during puberty. METHODS: Sixty nine PCOSs and 84 control sons (Cs) 7 to 18 years old matched by Tanner stage score were studied...
September 14, 2017: Endocrine Connections
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