TALIS 2018 Data
Binary logistic regression analysis
Enables estimation of the relationship between one or more independent variables (or predictors) and the categorical dependent (or predicted) variable with two categories. The regression coefficient (ß) of a logistic regression is the estimated increase in the log odds of the outcome per unit increase in the value of the predictor variable. Log odds (ß) are then transformed into odds ratios (exp(ß); OR), which makes the data more interpretable in terms of probability.
Regression analysis was carried out for each country separately, as prior analysis showed noticeable differences in regression coefficients between countries.
Multiple linear regression analyses
Computed using the International Database (IDB) Analyzer version 3.1.8 and the REPEST module in STATA.
Computed for some indices with:
- REPEST module within the software STATA using population weights
- BRR methodology with Fay’s adjustment for variance estimation
General note: Because cross-sectional survey data were used for the analyses, no causal conclusions could be drawn.
Suggestions for doing secondary analyses
All analyses in TALIS 2018 should be computed using the latest version of the International Database (IDB) Analyzer or the STATA REPEST module to account for the complex sample design of TALIS. Population weights and BRR methodology with Fay’s adjustment for variance estimations must be used.
Data archives are created and made available in SAS, SPSS, and STATA format.
Two data files exist, one each for teachers and principals per ISCED level 2 (as well as for ISCED levels 1 and 3 and the TALIS-PISA link for those countries who participated in these options).
Data files are available on the OECD TALIS website for each population (ISCED 1, ISCED 2, ISCED 3, and TALIS-PISA Link) and each participating country or sub-national entity. A combined international public-use teacher file and a combined international public-use principal file are also available.
All public-use data files are available for download at the OECD TALIS website: http://www.oecd.org/education/talis/talis-2018-data.htm
Special permission is needed to obtain data from Iceland.