Lifetime Data Analysis

, Volume 9, Issue 4, pp 311-330

First online:

The Perpetual Student: Modeling Duration of Undergraduate Studies Based on Lifetime-Type Educational Data

  • Aglaia G. KalamatianouAffiliated withDepartment of Sociology, Panteion University of Athens
  • , Sally McCleanAffiliated withSchool of Information and Software Engineering, University of Ulster

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


It is important to educational planners to estimate the likelihood and time-scale of graduation of students enrolled on a curriculum. The particular case we are concerned with, emerges when studies are not completed in the prescribed interval of time. Under these circumstances we use a framework of survival analysis applied to lifetime-type educational data to examine the distribution of duration of undergraduate studies for 10,313 students, enrolled in a Greek university during ten consecutive academic years. Non-parametric and parametric survival models have been developed for handling this distribution as well as a modified procedure for testing goodness-of fit of the models. Data censoring was taken into account in the statistical analysis and the problems of thresholding of graduation and of perpetual students are also addressed. We found that the proposed parametric model adequately describes the empirical distribution provided by non-parametric estimation. We also found significant difference between duration of studies of men and women students. The proposed methodology could be useful to analyse data from any other type and level of education or general lifetime data with similar characteristics.

duration of studies lifetime-type educational data survival analysis non-parametric and parametric estimation modified goodness-of-fit procedure