Abstract
Educational attainment is an attribute that leads to a great distinction between the members of a population, including when considering their health and well-being, which are features to pursue within an aging society. The aim of this work was to produce demographic projections for the Portuguese population by sex, age group and level of educational attainment, for the period 2011–2031. Considering fertility, mortality and migration differentials by level of education, the population was projected using the multistate cohort-component method with a block Leslie matrix. Two scenarios were considered, one where educational attainment before 2011 remains constant and another in which educational attainment will follow the trend observed over the last decade, being the trend in the state proportion modelled using continuation ratio models. The results show an increase in the proportion of individuals who complete higher educational levels in almost all age groups of both sexes. Among women, only 13.6 % had completed some level of higher education in 2011, a figure that will rise to approximately 23.4 % in 2031, whereas among men this value was only 9.7 % and will also rise by 2031, reaching 15.5 %. We can expect the proportion of people with higher educational levels to continue to rise as the education of younger cohorts seems to evolve positively. This work will be particularly useful to study how the aging population and the rising levels of education can contribute to the planning and monitoring of public policies, although these findings can also be used in other research contexts.
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Notes
Dustmann and Glitz (2011) classify as deliberate migrations those due to individual decisions, based on seeking better economic conditions in other regions.
There are no published results from the projections produced by Statistics Portugal, concerning either age-specific fertility rates or infant mortality rates, which led to the need for using the results from the United Nations projections.
In the two first age groups (0–4 and 5–9 years), this state includes only individuals who have no education or, for a reduced proportion of children between 5 and 9 years, those who completed the first 4 years of schooling: according to the structure of the Portuguese education system, it is not possible to complete the second cycle (6 years) before age 10.
Considering the limitations associated with the use of more common model life tables systems, which were created several decades ago; for instance, the Coale–Demeny system (Coale 1966) does not allow us to consider extremely low infant mortality levels, since this kind of mortality pattern did not exist at that time, we chose to use a system based on contemporary data.
It was assumed that no transitions occurred between education levels; it is also admitted that the deaths within a given time range occurred in the mid-interval.
The estimated number of births was divided by the two sexes according to the sex ratio at birth: 0.512 male births and 0.488 female.
The trend modelling for state proportions is based on data from Labour Surveys (Statistics Portugal), regarding individuals aged above 15 years, by sex, age group and educational attainment level, for years 1998–2010. Since we intend to project this trend to 2031, we can expect the prediction error to be high, given the small number of observations used for modelling, in relation to the number of periods ahead for prediction.
The remaining proportions are not comparable, since KC et al. (2010) presented a different state structure: 1. No education; 2. Primary; 3. Secondary and 4. Tertiary and only the last class of education is defined as our higher education state.
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Acknowledgments
This work was co-funded by FEDER funds through the Operational Programme for Competitiveness Factors (COMPETE) and by National funds through Fundação para a Ciência e a Tecnologia (FCT) as part of the project Aging and Health in Portugal: Policies and Practices, FCOMP-01-0124-FEDER-PTDC/CS-DEM/109967/2009.
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Martins, M.O., Rodrigues, I. & Rodrigues, T. Multistate projections by level of education for Portugal, 2011–2031. J Pop Research 31, 317–343 (2014). https://doi.org/10.1007/s12546-014-9136-2
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DOI: https://doi.org/10.1007/s12546-014-9136-2