Role of Propensity Score in Developing Decision Trees

2010 ◽  
Author(s):  
Joseph Kang
Keyword(s):  
Propensity Score ◽  
Decision Trees

The Role of Nutritional Access in Malnourished Elderly Undergoing Major Surgery for Acute Abdomen: A Propensity Score-Matched Analysis

2020 ◽  
pp. 000313482097371
Author(s):  
Shekhar Gogna ◽  
David Samson ◽  
James Choi ◽  
Jorge Con ◽  
Kartik Prabhakaran ◽  
...  
Keyword(s):  
Propensity Score ◽  
Abdominal Surgery ◽  
Acute Abdomen ◽  
Anastomotic Dehiscence ◽  
The Elderly ◽  
Major Surgery ◽  
P Value ◽  
Gastrointestinal Complications ◽  
Group I

Background About 50% of the elderly undergoing emergency abdominal surgery are malnourished. The role of timely surgical nutritional access in this group of patients is unknown. Methods We analyzed the National Inpatient Sample database from 2009 through the first three-quarters of 2015 of patients aged ≥65 years who were malnourished and underwent major abdominal surgery for the acute abdomen within the first 2 days of hospital admission. Results Of 3 246 721 patients analyzed, 4311 patients met inclusion criteria. Of these, only 507 (11.8%) patients had surgical nutritional access (gastrostomy or jejunostomy) (group I), while 3804 patients (88.2%) did not (group II). In the propensity score-matched population, there were 482 patients in each group. The patients in group I had lower odds of mortality and postoperative gastrointestinal complications (paralytic ileus, anastomotic dehiscence, and intestinal fistulae) ( P-value <.01, respectively). Discussion Elderly who receive surgical nutritional access have lower rates of gastrointestinal complications and mortality.

scholarly journals Role of diuretics on long-term mortality may differ in volume status in patients with acute myocardial infarction

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
T Kawai ◽  
D Nakatani ◽  
T Yamada ◽  
T Watanabe ◽  
T Morita ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Propensity Score ◽  
Plasma Volume ◽  
Cox Regression ◽  
Volume Status ◽  
Increased Risk ◽  
Long Term Mortality

Abstract Background Diuretics has been reported to have a potential for an activation of the renin-angiotensin-aldosterone system and the sympathetic nervous system, leading to a possibility of poor clinical outcome in patients with cardiovascular disease. However, few data are available on clinical impact of diuretics on long-term outcome in patients with acute myocardial infarction (AMI) based on plasma volume status. Methods To address the issue, a total of 3,416 survived patients with AMI who were registered to a large database of the Osaka Acute Coronary Insufficiency Study (OACIS) were studied. Plasma volume status was assessed with the estimated plasma volume status (ePVS) that was calculated at discharge as follows: actual PV = (1 − hematocrit) × [a + (b × body weight)] (a=1530 in males and a=864 in females, b=41.0 in males and b=47.9 in females); ideal PV = c × body weight (c=39 in males and c=40 in females), and ePVS = [(actual PV − ideal PV)/ideal PV] × 100 (%). Multivariable Cox regression analysis and propensity score matching were performed to account for imbalances in covariates. The endpoint was all-cause of death (ACD) within 5 years. Results During a median follow-up period of 855±656 days, 193 patients had ACD. In whole population, there was no significant difference in long-term mortality risk between patients with and without diuretics in both multivariate cox regression model and propensity score matching population. When patients were divided into 2 groups according to ePVS with a median value of 4.2%, 46 and 147 patients had ACD in groups with low ePVS and high ePVS, respectively. Multivariate Cox analysis showed that use of diuretics was independently associated with an increased risk of ACD in low ePVS group, (HR: 2.63, 95% confidence interval [CI]: 1.22–5.63, p=0.01), but not in high ePVS group (HR: 0.70, 95% CI: 0.44–1.10, p=0.12). These observations were consistent in the propensity-score matched cohorts; the 5-year mortality rate was significantly higher in patients with diuretics than those without among low ePVS group (4.7% vs 1.7%, p=0.041), but not among high ePVS group (8.0% vs 10.3%, p=0.247). Conclusion Prescription of diuretics at discharge was associated with increased risk of 5-year mortality in patients with AMI without PV expansion, but not with PV expansion. The role of diuretics on long-term mortality may differ in plasma volume status. Therefore, prescription of diuretics after AMI may be considered based on plasma volume status. Funding Acknowledgement Type of funding source: None

Drivers for voluntary intellectual capital reporting based on agency theory

2019 ◽  
Vol 20 (2) ◽  
pp. 264-281 ◽  
Author(s):  
Viktoria Goebel
Keyword(s):  
Propensity Score ◽  
Agency Theory ◽  
Propensity Score Matching ◽  
Intellectual Capital ◽  
Integrated Reporting ◽  
Content Type ◽  
The Relationship ◽  
Practical Implications ◽  
Management Report

PurposeThe purpose of this paper is to investigate the drivers for voluntary intellectual capital (IC) reporting based on agency theory. This study responds to calls for critical investigations of IC reporting utilising Goebel’s (2015a) IC measuring approach to investigate the role of IC value and mispricing for IC reporting.Design/methodology/approachA mandatory management report offers a unique research setting in Germany. The content analysis results of 428 German management reports are used in a regression analysis with leverage, ownership diffusion, IC value and mispricing. Additionally, a propensity score matching approach examines the relationship between IC reporting and IC value.FindingsThe regression results show that companies use voluntary IC reporting to encounter mispricing. IC reporting is negatively associated with leverage, whereas ownership diffusion and IC value show no significant results. The propensity score matching approach is also not significant.Research limitations/implicationsThis study contributes to strengthening and testing agency theory for IC reporting. As mispricing is identified to play an important role for IC reporting, IC research should account for mispricing.Practical implicationsThe findings suggest to reopen a discussion on the declared aims of the German management report and the international integrated reporting model to provide information on value creation, as IC value shows no link to IC reporting.Originality/valueThis study innovatively links IC reporting to IC value and mispricing to investigate drivers for voluntary IC reporting.

The SOE Channel of Monetary Policy Transmission: Evidence from China's Economic Stimulus Package

2021 ◽  
pp. 1-21
Author(s):  
Wenbin Chen ◽  
Shi-Zhuan Han ◽  
Jie Li ◽  
Tianhang Zhou
Keyword(s):  
Monetary Policy ◽  
Propensity Score ◽  
Propensity Score Matching ◽  
Bank Loans ◽  
Monetary Policy Transmission ◽  
Difference In Difference ◽  
Policy Transmission ◽  
High Level ◽  
Stimulus Package

Abstract We examine the state-owned enterprises (SOEs) channel in monetary policy transmission in the context of China's 2008 stimulus package. Using a difference-in-difference approach, we show that the higher SOE share in the cities after the stimulus package, the more bank loans issued in the cities. Furthermore, we find that the role of SOEs in monetary policy transmission is more significant in underdeveloped cities and cities with a high level of government intervention. We adopt propensity score matching difference-in-difference to deal with potential endogeneity problem. The baseline results also survive a series of robustness tests.

scholarly journals Association of hyperlipidaemia with 5-year survival after hospitalisation for acute myocardial infarction: a propensity score matched analysis

Open Heart ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. e001163
Author(s):  
Mohammed Yousufuddin ◽  
Ye Zhu ◽  
Ruaa Al Ward ◽  
Jessica Peters ◽  
Taylor Doyle ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Propensity Score ◽  
Primary Objective ◽  
Life Years ◽  
Statin Prescription ◽  
Statin Adherence ◽  
The Impact

ObjectivesThe primary objective was to examine the association between hyperlipidaemia (HLP) and 5-year survival after incident acute myocardial infarction (AMI). The secondary objectives were to assess the effect of HLP on survival to discharge across patient subgroups, and the impact of statin prescription, intensity and long-term statin adherence on 5-year survival.MethodsRetrospective cohort study of 7071 patients hospitalised for AMI at Mayo Clinic from 2001 through 2011. Of these, 2091 patients with HLP (age (mean±SD) 69.7±13.5) were propensity score matched to 2091 patients without HLP (age 70.6±14.2).ResultsIn matched patients, HLP was associated with higher rate of survival to discharge than no HLP (95% vs 91%; log-rank <0.0001). At year 5, the adjusted HR for all-cause mortality in patients with HLP versus no HLP was 0.66 (95% CI 0.58–0.74), and patients with prescription statin versus no statin was 0.24 (95% CI 0.21 to 0.28). The mean survival was 0.35 year greater in patients with HLP than in those with no HLP (95% CI 0.25 to 0.46). Patients with HLP gained on an average 0.17 life year and those treated with statin 0.67 life year at 5 years after AMI. The benefit of concurrent HLP was consistent across study subgroups.ConclusionsIn patients with AMI, concomitant HLP was associated with increased survival and a net gain in life years, independent of survival benefit from statin therapy. The results also reaffirm the role of statin prescription, intensity and adherence in reducing the mortality after incident AMI.

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