Doctoral Education, Job Mismatch, and Wage Consequences in South Korea: A Propensity Score Matching Approach

2021 ◽  
pp. 002190962110529
Author(s):  
Kihong Park
Keyword(s):  
Propensity Score ◽  
South Korea ◽  
Propensity Score Matching ◽  
Negative Influence ◽  
Rapid Expansion ◽  
Wage Penalty ◽  
Omitted Variable Bias ◽  
Wage Effects ◽  
Variable Bias ◽  
Job Mismatch

This study extends the previous literature on the wage effects of over-education, focusing on young doctorate holders (DHs). It also contributes to the conventional over-education literature on a causal relationship between over-education and wages by implementing techniques of propensity score matching (PSM). By tackling potential bias as a consequence of omitted variable bias via the PSM strategy, this study provides evidence of the negative influence of over-education on wages (i.e., the over-education wage penalty) once potential sources of bias are adequately considered. While the current analysis is focused on one country, South Korea, its results might be relevant for many other countries that have experienced a rapid expansion in the supply of DHs over recent years.

scholarly journals The Impact of Lagging-Region Status on District Poverty in Indonesia

2016 ◽  
Vol 62 (1) ◽  
pp. 30
Author(s):  
Rus’an Nasrudin
Keyword(s):  
Panel Data ◽  
Propensity Score ◽  
Propensity Score Matching ◽  
Selection Bias ◽  
Unobserved Heterogeneity ◽  
Poverty Rate ◽  
Fixed Effect ◽  
Omitted Variable Bias ◽  
Variable Bias ◽  
The Impact

Reducing subnational imbalances of development progress is unquestionable policy for heterogeneous Indonesia. This paper examines the impact of policy that assigns a lagging-region status namely status daerah tertinggal (DT) on poverty rate and poverty gap among districts in Indonesia in the two period of SBY presidency. The panel data fixed effect combined with propensity score matching is used to tackle the selection bias due to the nature of the policy, unobserved heterogeneity and omitted variable bias. The results show that the lagging-region status that was aimed to mainstream central and district’s budget toward lagging regions statistically significant reduces poverty rate and poverty gap in the period. The DT status, on average is associated with 0.75 percentage point of reduction in the poverty rate and 7% reduction in the poverty gap index. AbstrakMenurunkan ketimpangan antar-daerah adalah sebuah agenda kebijakan yang niscaya untuk Indonesia yang majemuk dalam kemajuan ekonomi. Artikel ini berusaha mengukur dampak dari sebuah kebijakan penetapan daerah tertinggal terhadap dua ukuran kemiskinan, yaitu tingkat kemiskinan dan kedalaman kemiskinan pada dua periode masa jabatan Presiden SBY. Metode yang dipergunakan adalah panel data fixed-effect dikombinasikan dengan propensity score matching untuk mengatasi permasalah endogen pada variabel utama yaitu bias dalam seleksi terhadap kebijakan, keragaman daerah yang tidak dapat diukur, dan potensi bias karena ketiadaan variabel-variabel yang berpengaruh terhadap dua ukuran kemiskinan. Hasil pendugaan regresi tersebut menunjukkan bahwa penetapan daerah tertinggal yang ditujukan untuk mengarusutamakan dana pembangunan secara statistik signifikan dan menyebabkan penurunan tingkat kemiskinan dan kedalaman kemiskinan di masa tersebut. Daerah tertinggal secara rata-rata memiliki tingkat kemiskinan lebih rendah sebesar 0.75 (persentase) dan memiliki indeks kedalaman kemiskinan 7% lebih rendah.Kata kunci: Daerah Tertinggal; Kemiskinan; IndonesiaJEL classifications: I32, P48

scholarly journals Effects of Recent Use of Renin-Angiotensin System Inhibitors on Mortality of Patients With Coronavirus Disease 2019

2020 ◽  
Vol 7 (11) ◽  
Author(s):  
Seongman Bae ◽  
Ju Hyeon Kim ◽  
Ye-Jee Kim ◽  
Joon Seo Lim ◽  
Sung-Cheol Yun ◽  
...  
Keyword(s):  
Propensity Score ◽  
South Korea ◽  
Hospital Mortality ◽  
Propensity Score Matching ◽  
Renin Angiotensin System ◽  
Angiotensin Converting Enzyme Inhibitors ◽  
Diagnostic Code ◽  
Angiotensin Ii Receptor ◽  
Converting Enzyme Inhibitors ◽  
Risk Of Death

Abstract Background There is growing concern about the potential harmful effects of angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin II receptor blockers (ARBs) in patients with coronavirus disease 2019 (COVID-19) and cardiovascular diseases (CVDs). The aim of this study was to evaluate the association between recent exposure to ACEIs/ARBs and in-hospital mortality in patients with COVID-19. Methods We used data from a nationwide cohort of patients with COVID-19 from the health insurance claims data of South Korea, which were released for research purposes for public health by the Ministry of Health and Welfare of South Korea. Patients with COVID-19 were identified using the relevant diagnostic code. Propensity score matching (1:1) was carried out among patients with CVD according to the type of medication (ACEIs/ARBs vs other), and the risk of death was assessed. Results A total of 4936 patients with COVID-19 were analyzed, of whom 1048 (21.2%) had CVD. Of the 1048 patients with CVD, 864 (82.4%) received at least 1 antihypertensive medication before the diagnosis of COVID-19, including 359 (41.6%) who received ACEIs/ARBs and 505 (58.4%) who received drugs other than ACEIs/ARBs. Using the propensity scores for ACEI/ARB use, we matched 305 pairs of patients receiving ACEIs/ARBs and patients receiving other drugs. Recent use of ACEIs/ARBs was not significantly associated with in-hospital mortality in unadjusted analysis (odds ratio [OR], 0.62; 95% CI, 0.33–1.14) or propensity score matching analysis (OR, 1.00; 95% CI, 0.46–2.16). Conclusions In patients with COVID-19 and underlying CVDs, the recent use of ACEIs/ARBs was not significantly associated with in-hospital mortality. These findings do not support stopping or modifying ACEIs/ARBs in patients during the current COVID-19 pandemic.

scholarly journals 773. Statins Decrease the Risk of Active Tuberculosis: A Propensity Score-Matched Analysis

2018 ◽  
Vol 5 (suppl_1) ◽  
pp. S277-S277
Author(s):  
Min-Chul Kim ◽  
Sung-Cheol Yun ◽  
Sung-Han Kim
Keyword(s):  
Propensity Score ◽  
South Korea ◽  
Propensity Score Matching ◽  
Health Technology ◽  
Active Tuberculosis ◽  
Lipid Lowering ◽  
Matched Pairs ◽  
Lipid Lowering Agents ◽  
Insurance Database ◽  
Statin Use

Abstract Background Statins, which are lipid-lowering agents, have anti-inflammatory and immunomodulatory properties that may affect the development of tuberculosis (TB). We assessed the association between statins and the risk of active TB with propensity score-matching. Methods The study was based on the National Health Insurance database and its subset database of the “medical check-up” population of South Korea. These cohorts consist of about one million and 570,000 people, respectively, representative of the entire population of South Korea. We identified 107,689 statin users and 433,067 nonstatin users. After propensity score matching, 26,036 statin users and the same number of nonstatin users were finally analyzed. The development of active TB was monitored in these matched pairs over the 11 years from 2003 to 2013. Results The number of active TB cases was 150 in 31,645 person-years (4.74 per 1,000 person-years; 95% CI, 3.98 to 5.50) in the statin users, and 902 in 153,401 person-years (5.88 per 1,000 person-years; 95% CI, 5.50 to 6.26) in the nonstatin users. Statin users had a significantly lower risk of TB than nonstatin users: hazard ratio (HR) 0.78 (95% CI, 0.65 to 0.93) (P = 0.006). A subgroup analysis showed that statin use reduced the risk of TB significantly in subjects without diabetes but not in subjects with diabetes: HRs were, respectively, 0.73 (95% CI, 0.56 to 0.95) (P = 0.018) and 0.83 (95% CI, 0.54 to 1.28) (P = 0.40). Conclusion These epidemiologic findings provide strong evidence that statin use decreases the risk of active TB. The protective effect of statins against TB was attenuated by diabetes. Further studies about the effect of statins on TB incorporating experimental and clinical researches are required. Disclosures S. H. Kim, the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI): Investigator, Grant recipient.

Besondere Förderung von Kern- kompetenzen an Spezialgymnasien?

2010 ◽  
Vol 24 (1) ◽  
pp. 5-22 ◽  
Author(s):  
Jürgen Baumert ◽  
Michael Becker ◽  
Marko Neumann ◽  
Roumiana Nikolova
Keyword(s):  
Propensity Score ◽  
Propensity Score Matching

Der vorliegende Beitrag geht der Frage nach, ob Schülerinnen und Schüler, die nach der vierten Klasse in Berlin in ein grundständiges Gymnasium wechseln, in Abhängigkeit vom Profil des besuchten Gymnasiums im Vergleich zu Grundschülern mit vergleichbaren Lernvoraussetzungen unterschiedliche Lernzuwächse im Leseverständnis, in Mathematik und Englisch erreichen. Auf der Datengrundlage der ELEMENT-Studie wurde die Leistungsentwicklung von Schülerinnen und Schülern an grundständigen Gymnasien (N = 1758) und Grundschulen (N = 3169) während der 5. und 6. Jahrgangsstufe mithilfe von Propensity Score Matching-Analysen (PSM) modelliert. Nach Kontrolle von leistungsrelevanten Unterschieden zwischen den Schülergruppen am Ende der 4. Jahrgangsstufe zeigten sich für das Leseverständnis am Ende der 6. Klasse keine statistisch signifikanten Unterschiede. Für die Mathematikleistung ließen sich Unterschiede lediglich zugunsten eines grundständigen Gymnasiums, das zum Untersuchungszeitpunkt noch kein spezifisches Profil entwickelt hatte, nachweisen. In der Domäne Englisch, in der die curricularen Unterschiede zwischen den Schulzweigen stärker akzentuiert sind, wurden positive Ergebnisse im Vergleich zu den Grundschulen für die so genannten Schnellläuferzüge, die englisch-bilingualen Klassen und das grundständige Gymnasium ohne spezifisches Profil ermittelt. Die Lernstände am Ende der 6. Klasse in den altsprachlichen Gymnasien fielen dagegen im Vergleich zu den Grundschulen geringer aus. Die Befunde widersprechen der Annahme, dass mit dem frühen Übergang auf ein grundständiges Gymnasium automatisch eine besondere Förderung der Lesefähigkeit und des mathematischen Verständnisses besonders leistungsfähiger Schülerinnen und Schüler erreicht werde. Die Ergebnisse zu den Englischleistungen weisen hingegen darauf hin, dass Unterschiede in der Leistungsentwicklung auftreten können, sofern die Aufteilung auf Schulen mit unterschiedlichen Bildungsprogrammen mit curricularen Unterschieden im Unterricht einhergeht. Methodische und inhaltliche Implikationen der Befunde und Grenzen ihrer Generalisierbarkeit werden diskutiert.

Validating Four Standard Scales in Spiritually Practicing and Nonpracticing Samples Using Propensity Score Matching

2008 ◽  
Vol 24 (3) ◽  
pp. 165-173 ◽  
Author(s):  
Niko Kohls ◽  
Harald Walach
Keyword(s):  
Propensity Score ◽  
Propensity Score Matching ◽  
Repeated Measures ◽  
Propensity Scores ◽  
Total Sample ◽  
Experimental Manipulation ◽  
Brief Symptom Inventory ◽  
Time Interaction ◽  
Social Support Scale ◽  
Lower Test

Validation studies of standard scales in the particular sample that one is studying are essential for accurate conclusions. We investigated the differences in answering patterns of the Brief-Symptom-Inventory (BSI), Transpersonal Trust Scale (TPV), Sense of Coherence Questionnaire (SOC), and a Social Support Scale (F-SoZu) for a matched sample of spiritually practicing (SP) and nonpracticing (NSP) individuals at two measurement points (t1, t2). Applying a sample matching procedure based on propensity scores, we selected two sociodemographically balanced subsamples of N = 120 out of a total sample of N = 431. Employing repeated measures ANOVAs, we found an intersample difference in means only for TPV and an intrasample difference for F-SoZu. Additionally, a group × time interaction effect was found for TPV. While Cronbach’s α was acceptable and comparable for both samples, a significantly lower test-rest-reliability for the BSI was found in the SP sample (rSP = .62; rNSP = .78). Thus, when researching the effects of spiritual practice, one should not only look at differences in means but also consider time stability. We recommend propensity score matching as an alternative for randomization in variables that defy experimental manipulation such as spirituality.

Propensity Score Matching in Cross-Lingual Test Equating

2012 ◽  
Author(s):  
Xin Liu ◽  
Xiaobin Zhou ◽  
Jianjun Zhu ◽  
Jing-Jen Wang
Keyword(s):  
Propensity Score ◽  
Propensity Score Matching ◽  
Test Equating ◽  
Cross Lingual
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