Overview

In this section, we present an overview of the number of participants and their composition across all waves of CILS4EU and CILS4EU-DE. For waves 1-3, the information is presented for each of the three participating countries separately. Since harmonized data collection ended after three waves, information from wave 4 onwards refers to the German continuation of the CILS4EU study, CILS4EU-DE.

CILS4EU (2010-2013)

Wave 1

The table below contains information on the wave 1 participants of the CILS4EU study in absolute numbers on the school, classroom, and student level respectively. It also includes information on the number of parental and teacher interviews that were conducted during the first wave of the study.

 

schools

classrooms

students

parents

teachers

England

107

214

4,315

1,588

182

Germany

144

271

5,013

3,909

248

The Netherlands

100

222

4,363

3,248

190

Sweden

129

251

5,025

2,955

216

Total

480

958

18,716

11,700

836

 


 Wave 2

This table gives an overview of the absolute number of student panelists who participated in the second wave. If it was possible, we interviewed the students in the school context again. This was the case for all respondents in the Swedish case and for most respondents from England and the Netherlands.

 

in-school

outside

overall

England

3,114

275

3,389

Germany

3,032

1,224

4,256

The Netherlands

3,322

292

3,614

Sweden

4,531

n/a

4,531

Total

13,999

1,791

15,790

 

Students that could not be interviewed in school were followed-up with individually and interviewed via phone, post, or web. The number of these "outside" of school interviews can be found in column 2.

This group is very large in the German context due to some specificities of the German educational system: schools of the lower secondary track usually do not offer a 10th grade.

 


Wave 3

The table below contains the number of children who participated in wave 3 by country and mode of participation. In Sweden, participation was only possible via a web questionnaire. In the other three countries, postal questionnaires were sent out and telephone interviews were conducted in addition to the web survey.

 

online

post*

telephone

overall

England

1,003

554

727

2,284

Germany

156

522

2,749

3,427

The Netherlands

1,456

780

431

2,667

Sweden

2,768

n/a

n/a

2,768

Total

5,383

1,856

3,907

11,146

 

*In the Netherlands, 531 of the postal respondents completed the questionnaire at school, and 249 completed it at home. In England and Germany, all questionnaires were completed at home.

 

CILS4EU-DE (2014-ongoing)

Waves 4-8 and Covid-19 Supplementary Survey

This table gives an overview of the number of participants for waves 4 to 8 and the Covid-19 supplementary survey of the German follow-up study CILS4EU-DE. Within this project, we continued the survey of original participants of the German CILS4EU subsample at regular intervals. In wave 6 of the CILS4EU-DE data collection, we additionally drew a refreshment sample in order to increase the remaining sample size. More information about the design of the follow-up study can be found here.

 

face-to-face

online

post

telephone

overall

Wave 4

n/a

753

1,628

653

3,034

Wave 5

n/a

1,636

715

466

2,817

Wave 6 (overall)

5,074

127

129

490

5,820

    Wave 6 (panel)

1,561

127

129

490

2,307

    Wave 6 (refreshment)

3,513

n/a

n/a

n/a

3,513

Wave 7

n/a

1,955

1,651

661

4,267

Wave 8

n/a

2,674

1,196

326

4,196

CILS4COVID

n/a

2,890

627

n/a

3,517

 

In this second table, we list the number of participants in each wave by separately by generational status. The 2nd and 3rd generation include the interethnic 2nd and 3rd generation. For more information about how the generational status variable is constructed in the CILS4EU data, see this working paper by Dollmann, Jacob & Kalter (2014).

For the overview table below, information about the generational status was taken from Wave 6 for the refreshment sample. For the panel sample, information about generational status was taken from Wave 1. If that was missing, information from Wave 2 or 3 was used instead.

 

no migration
background*

1st
generation

2nd
generation

3rd
generation

overall

Wave 4

1,598

280

1,044

112

3,034

Wave 5

1,495

252

964

106

2,817

Wave 6

3,129

688

1,813

190

5,820

Wave 7

2,523

376

1,226

142

4,267

Wave 8

2,500

351

1,203

142

4,196

CILS4COVID

2,179

273

947

118

3,517

 

*This category includes the 3.75th generation (i.e. those with one foreign-born grandparent).