Examinando por Autor "Cardona Jiménez, Johnatan"

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    Ítem
    The Impact Of Subsidized Health Insurance On The Poor In Colombia: Evaluating The Case Of Medellín
    (Scielo, 2013) Ramírez Hassan, Andrés; Cardona Jiménez, Johnatan; Cadavid Montoya, Ramiro; Universidad EAFIT; Universidad Nacional de Colombia; Universidad EAFIT.; Escuela de Economía y Finanzas; Economía; Estudios en Economía y Empresa
    This paper uses count and binary data models with an endogenous dummy variable to evaluate the effect of the subsidized health care program in Medellin (Colombia). The subsidized program, which primarily covers poor people, is found to have a significant impact on the use of preventive medical care and hospitalization that might have a negative impact on the financial statements of the program. Specifically, econometric estimations of health care utilization indicate that there is both selectionand moral hazard. These facts imply that the program can improve its coverage if mechanisms are created to lower the individual moral hazardeffect.
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    Ítem
    Which team will win the 2014 FIFA World Cup? A Bayesian approach for dummies
    (Universidad EAFIT, 2014-02-14) Ramírez Hassan, Andrés; Cardona Jiménez, Johnatan
    This paper presents several "ex ante" simulation exercises of the 2014 FIFA World Cup. Specifically, we estimate the probabilities of each national team advancing to different stages, using a basic Bayesian approach based on conjugate families. In particular, we use the Categorical-Dirichlet model in the first round and the Bernoulli-Beta model in the following stages. The novelty of our framework is given by the use of betting odds to elicit the hyperparameters of prior distributions. Additionally, we obtain the posterior distributions with the Highest Density Intervals of the probability to being champion for each team. We find that Brazil (19.95%), Germany (14.68%), Argentina (12.05%), and Spain (6.2%) have the highest probabilities of being champion. Finally, we identify some betting opportunities with our simulation exercises. In particular, Bosnia & Herzegovina is a promising, whereas Australia shows the lowest betting opportunities return.