Documentation of scales implemented from panel wave 1 onwards

Sacchi, Stefan; Krebs-Oesch, Dominique (2021). Documentation of scales implemented from panel wave 1 onwards (TREE). Bern: TREE, University of Bern

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This paper documents the questionnaire-based scales and item composites administered in the first two waves of the second TREE cohort (TREE2) in 2017 and 2018. At the centre of this working paper is a technical appendix, which provides, for each scale, a detailed tabular report of selected statistics and quality measures. The focus is on the scales’ reliability, dimensionality and measurement invariance.
The scaling and calculation of factor scores rely essentially on the same factor-analytical models and methods as in the TREE2 baseline survey. These are described in detail in sec-tion 3 of the respective documentation of the scales used in that survey (see Sacchi & Krebs-Oesch, 2021). The documentation also describes the selection, calculation and interpretation of the figures and quality measures reported in the tabular appendix (ibid., section 4). Against this backdrop, the explanatory notes in the introduction of the present documenta-tion are restricted to a description of the database for both waves and of some modifications in the applied methods. In addition, we also describe a series of newly introduced statistics of longitudinal measurement invariance for scales with repeated measures.

Item Type:

Report (Report)


03 Faculty of Business, Economics and Social Sciences > Social Sciences > Institute of Sociology

UniBE Contributor:

Sacchi, Stefan (A), Krebs-Oesch, Dominique Fabienne


300 Social sciences, sociology & anthropology
300 Social sciences, sociology & anthropology > 310 Statistics
300 Social sciences, sociology & anthropology > 370 Education




TREE, University of Bern


[4] Swiss National Science Foundation




Stefan Sacchi

Date Deposited:

09 May 2022 13:56

Last Modified:

10 Jul 2023 14:29

Related URLs:

Additional Information:

Note that the TREE2 data release 2023 includes an updated version of this document covering an additional panel wave (wave 3, 2019):

TREE (2023), Transitions from Education to Employment, Cohort 2 (TREE2), panel waves 0-3 (2016-2019) (2.0.0) [Dataset].
University of Bern. Distributed by FORS data service.




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