Data sources
The majority of the indicators in this publication come from OECD data collections, for example the joint UNESCO-OECD-Eurostat (UOE) data collection, the OECD Indicators of Education Systems (INES) data collection, the Survey of Adult Skills, or the OECD Career of Doctorate Holders Survey. When possible, OECD data have been extracted from the OECD Education Statistics (OECD, 2018[5]) or from the OECD Science, Technology and R&D Statistics (OECD, 2018[6]) databases. In the other cases, the data collection is indicated as the data source.
Other data sources, from outside the OECD, have been used for selected indicators within the publication. For example, some indicators on financial and human resources are based on the European Register for Tertiary Education (ETER) dataset; and data from the World Economic Forum and the European Community Innovation Survey have been used to present indicators on higher education engagement.
In addition, a survey was issued to the four participating jurisdictions to collect data on a variety of topics, including a number of statistics broken down by subsector (universities and professional higher education institutions). The survey results are published in a number of tables within the publication. In these cases the source is stated as “adapted from data/information provided by the participating jurisdictions”.
Data updates
This publication makes use of the most recent available data at the time of its preparation. Data released after 31 December 2018 have not been included in the analysis, except for the data on human resources in Chapter 6, which were released in early 2019, in order to standardise as much as possible the reference years used in Chapter 6.
A note on the statistical collaboration with LinkedIn
Box 5.10 was produced in collaboration with LinkedIn, a platform for professional networking. These data cover self-reported information on professional and educational experiences; and information on individual skills, either self-reported or reported by other individuals on the professional platform.
LinkedIn staff extracted the data on request of the OECD. The data provided by LinkedIn cover around 2 710 000 members who indicated that they earned their first master’s degree between 2010 and 2013 in eight jurisdictions (Australia, Canada, Estonia, the Flemish Community, France, the Netherlands, Norway and the United States). By comparison, the OECD estimated the number of first-time master’s graduates covering the same period and jurisdictions to be around 5 000 000 (based on data returned by jurisdictions in UNESCO-OECD-Eurostat (UOE) data collection). Graduates who reported over seven educational and professional experiences in the five years after graduating (1.5% of the total) were excluded from the analysis.
To check the robustness of the results, the same data extraction and calculations have been performed for both first-time bachelor’s and master’s graduates. In addition, the extraction of data on interpersonal skills has been performed based on two different skill lists: LinkedIn’s own list; and a list of skills closely matching (as agreed by the OECD and LinkedIn) the list of keywords on intrapersonal, interpersonal and problem-solving skills provided by (Binkley et al., 2005[7]). The conclusions discussed in Box 5.10 hold for all variations of the analysis carried out.
Sources of qualitative information
A substantial amount of qualitative information has been collected to prepare this publication. The main sources of this information are:
documents sent by the participating jurisdictions (one per jurisdiction) describing their higher education systems and policies
discussions between the OECD and the participating jurisdictions’ project coordinators held during six workshops between February 2017 and November 2018
other meetings and webinars with the participating jurisdictions’ project coordinators and national experts on higher education policies or statistics.
Throughout the publication, the information gathered from these sources is referred to as “adapted from information provided by the participating jurisdictions”.
The publication also makes use of structured qualitative data on university autonomy in Europe from the European University Association (EUA) (Bennetot Pruvot and Estermann, 2017[8]); and on higher education academic staff categories from Eurydice (European Commission, EACEA and Eurydice, 2017[9]). Both organisations (EUA and Eurydice) gave permission to the OECD to use their qualitative data collection for additional data collection or validation. For example, qualitative data on the autonomy of professional HEIs and independent private institutions were collected by the OECD through interviews of representatives of these institutions or government officials, based on the EUA tool.
Symbols for missing data and abbreviations
The following symbols and abbreviations are used to convey statistical information in the linked files to the figures presented (statlinks) throughout this publication:
b There is a break in the time series, implying that comparisons across time should be made with caution
c There are too few observations to provide reliable estimates
d Difference in methodology
e Estimated value
m Data are not available (missing)
p Provisional value
q Data have been withdrawn at the request of the country concerned.
r Values are below a certain reliability threshold and should be interpreted with caution
w The indicator is overestimated because it includes data from another category
x Data are included in another category or column within the table
z Data are not applicable because the category does not apply