Harmonized Variables

SDR v.1.0, v.1.1 and v.1.2



Age (years)

Year of birth

Rural/non-rural place of residence

Metropolitan place of residence

Education (levels)

Years of schooling

Political attitudes and opinions

Trust in the national parliament

Trust in the justice system

Trust in political parties

Trust in the government

Interest in politics

Political behavior

Participation in demonstrations

Signing petitions

Social capital

Trust in people

Technical variables

Date of the Interview

Year of Interview

Survey year

Country (country/territory)


Calibrated Weights

In addition, SDR v.1.0, v.1.1, and v.1.2 contain Survey Quality Control variables and Control indicators for the Harmonization Process.

The SDR Database – Coverage

Slomczynski, Kazimierz M., Craig J. Jenkins, Irina Tomescu-Dubrow, Marta Kołczyńska, Ilona Wysmułek, Olena Oleksiyenko, Przemek Powałko, and Marcin W. Zieliński. 2017. “SDR Master Box.” doi:10.7910/DVN/VWGF5Q, Harvard Dataverse

For more information, see the book:

Słomczyński, Kazimierz M., Irina Tomescu-Dubrow, J. Craig Jenkins, with Marta Kołczyńska, Przemek Powałko, Ilona Wysmułek, Olena Oleksiyenko, Marcin W. Zieliński and Joshua K. Dubrow. 2016. Democratic Values and Protest Behavior. Harmonization of Data from International Survey Projects. Warsaw: IFiS Publishers. (full text)