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The Cox Model

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Willett and Singer(1991, 1993) have advocated the use of survival analysis for studying student dropout and teacher attrition. One of the common survival analysis model used in field of education is the cox model. Though, traditionally this model is used mainly in the medical sciences, however, over the last decade the Cox model has been utilized with greater frequency for the study of educational data in a variety of contexts.

Prediction of time required to graduate for engineering undergraduates using the Cox proportional hazard models on a dataset of 429 full time students at University of Oklahoma with independent variables as gender, college entrance examination scores, other measures of academic achievement(Chimka, Reed-Rhoads, & Barker, 2007). The impact of standardized math test scores, gender, and Science ACT scores in explaining variation in student graduation was found significant, with the finding that females and students with higher SAT math scores graduated the most quickly.

Another study by Ronco (1994) used survival analysis to investigate when the students were at the greatest risk of withdrawing and subsequently when are they more likely to return and on their return were their risk of withdrawing again was altered. Due …show more content…

It used Cox proportional hazard method using the National Longitudinal Survey of Youth 1997. The resulting hazards models indicated that only for students who were younger for their class average entry age there existed a curvilinear relationship, between the CTE-to-academic course-taking ratio and the risk of dropping. This implies that a mix of both CTE and academic courses increased the motivation of the students to study and reduce dropout

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