Applying Modern Survival Analysis Methods to Longitudinal Dental Caries Studies

2002 ◽  
Vol 81 (2) ◽  
pp. 144-148 ◽  
Author(s):  
T. Härkänen ◽  
M.A. Larmas ◽  
J.I. Virtanen ◽  
E. Arjas
Keyword(s):  
Survival Analysis ◽  
Dental Caries ◽  
Analysis Methods

Applying Modern Survival Analysis Methods to Longitudinal Dental Caries Studies

2002 ◽  
Vol 81 (2) ◽  
pp. 144-148 ◽  
Author(s):  
T. Harkanen ◽  
M.A. Larmas ◽  
J.I. Virtanen ◽  
E. Arjas
Keyword(s):  
Survival Analysis ◽  
Dental Caries ◽  
Analysis Methods

scholarly journals Evaluation of Changes on World Stock Exchanges in Connection with the SARS-CoV-2 Pandemic. Survival Analysis Methods

Risks ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 121
Author(s):  
Beata Bieszk-Stolorz ◽  
Krzysztof Dmytrów
Keyword(s):  
Survival Analysis ◽  
Proportional Hazards ◽  
Proportional Hazards Model ◽  
Stock Exchange ◽  
Cox Proportional Hazards ◽  
Cox Proportional Hazards Model ◽  
Stock Exchanges ◽  
Analysis Methods ◽  
Hazards Model ◽  
Kaplan Meier

The aim of our research was to compare the intensity of decline and then increase in the value of basic stock indices during the SARS-CoV-2 coronavirus pandemic in 2020. The survival analysis methods used to assess the risk of decline and chance of rise of the indices were: Kaplan–Meier estimator, logit model, and the Cox proportional hazards model. We observed the highest intensity of decline in the European stock exchanges, followed by the American and Asian plus Australian ones (after the fourth and eighth week since the peak). The highest risk of decline was in America, then in Europe, followed by Asia and Australia. The lowest risk was in Africa. The intensity of increase was the highest in the fourth and eleventh week since the minimal value had been reached. The highest odds of increase were in the American stock exchanges, followed by the European and Asian (including Australia and Oceania), and the lowest in the African ones. The odds and intensity of increase in the stock exchange indices varied from continent to continent. The increase was faster than the initial decline.

A study on first citations of patents through a combination of Bradford’s distribution, Cox regression and life tables method

2019 ◽  
Vol 46 (4) ◽  
pp. 496-507
Author(s):  
Mohammad Tavakolizadeh-Ravari ◽  
Faramarz Soheili ◽  
Fatemeh Makkizadeh ◽  
Fatemeh Akrami
Keyword(s):  
Survival Analysis ◽  
Cox Regression ◽  
Time Lag ◽  
The United States ◽  
Life Tables ◽  
Analysis Methods ◽  
Life Table Data ◽  
Table Data ◽  
States Patent

The current research employs two survival analysis methods: Cox regression and life tables. The first determines the effect of inventor, assignee and country for receiving the first citation by patents. Life tables concern the time-lag between the dates of granting and receiving the first citation by patents. Bradford’s method is also established as a technique for categorization of patents, inventors, assignees and countries as a prerequisite for survival analysis. The research materials consist of 2837 patents in the area of ‘purification, separation, or recovery of hydrocarbon components’ which were classified under the classes 585/800 and 585/868 by the United States Patent and Trademark Office (USPTO). The findings showed that Bradford’s method complies with the distribution of citations of patents, first inventors and assignees. It means that Bradford’s distribution is well suited for determination of key patents, inventors and assignees in an area too. Cox regression revealed that only the inventors’ variable decides for receiving the first citation in terms of frequency, degrees of their inventions and citations. Life table data revealed that one half of the first citations were received in the first 10 years. As a conclusion, survival analysis methods provide the possibility for deciding technology lifetime and for predicting the determinants for the flow of knowledge through citation analysis.

Risk factors for dental caries in childhood: a five-year survival analysis

2014 ◽  
Vol 43 (2) ◽  
pp. 163-171 ◽  
Author(s):  
Hyo-Jin Lee ◽  
Jin-Bom Kim ◽  
Bo-Hyoung Jin ◽  
Dai-Il Paik ◽  
Kwang-Hak Bae
Keyword(s):  
Risk Factors ◽  
Survival Analysis ◽  
Dental Caries

scholarly journals Economic and Mathematical Modelling of the Effectiveness of the National System for Combatting Cyber Fraud and Legalisation of Criminal Proceeds Based on Survival Analysis Methods

2021 ◽  
Vol 8 (1) ◽  
pp. 144-153
Author(s):  
Olha V. Kuzmenko ◽  
Tetiana V. Dotsenko ◽  
Liliia O. Skrynka
Keyword(s):  
Survival Analysis ◽  
Mathematical Modelling ◽  
Money Laundering ◽  
Large Scale ◽  
Modern World ◽  
Time Interval ◽  
Negative Consequences ◽  
National System ◽  
Analysis Methods ◽  
Temporal Measurement

In modern world, the digitalisation of financial relations, the development of innovative technologies, and the emergence and use of cryptocurrencies for payments lead to an increase in the number of cyber frauds in the financial sector and their intellectualisation, increasing the illegal outflow of funds abroad. Ineffective decisions and inaction in counteracting these threats lead to large-scale negative consequences of both financial and social nature. The purpose of this study is to implement economic and mathematical modelling of the effectiveness of the national system for combatting cyber fraud and legalisation of criminal proceeds, which is based on the use of survival analysis methods. The study provides a bibliometric analysis of publications on the effectiveness of cyber fraud and combatting the legalisation of illegal funds, by building a bibliometric map of keywords, using VOSviewer software. This allowed identifying 7 clusters of basic categories of cyber fraud analysis, and changes in the vectors of research scientists showed a visual map of the contextual-temporal measurement of research into the effectiveness of cyber fraud in the publications of the Scopus database. The paper examines the effectiveness of the national system for combatting cyber fraud and money laundering based on survival tables. As a result of the study, the effectiveness of the national system for combatting cyber fraud and money laundering was analysed based on the Kaplan-Meier method. The study identified the dependences of the effectiveness of the national system for combatting cyber fraud and legalisation of criminal proceeds on the time interval after the discovery of violations. The practical value of applying the developed model is to form an analytical basis for further management decisions by the National Bank of Ukraine, the State Financial Monitoring Service, and the Security Service of Ukraine in terms of the effectiveness of the national system to combat cyber fraud and legalisation of criminal proceeds and the need to adjust it

The assessment of disease symptom dynamics using survival analysis methods

2019 ◽  
Vol 18 (4) ◽  
pp. 8-14
Author(s):  
A. A. Korneenkov ◽  
◽  
I. V. Fanta ◽  
Е. E. Vyazemskaya ◽  
◽  
...  
Keyword(s):  
Survival Analysis ◽  
Disease Symptom ◽  
Analysis Methods

Survival Analysis Methods for Personal Loan Data

2002 ◽  
Vol 50 (2) ◽  
pp. 277-289 ◽  
Author(s):  
Maria Stepanova ◽  
Lyn Thomas
Keyword(s):  
Survival Analysis ◽  
Analysis Methods
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