Survey Periods
The SOEP-IS survey period has changed repeatedly over the years. This can have various reasons, such as planned changes as part of the general survey design, necessary delays to be able to complete preparations for the survey, or additional survey time to improve the response rate. Below is a table with an overview of the different survey periods over the years. The planned survey periods for the coming years are included as well. These may of course still change and only represent the approximate plans.
The table only refers to the time in which interviews were planned or took place and not to times that were used for sampling or suchlike without (planned) interviews. In some years different subsamples had different survey periods. In these cases only the earliest and latest period for the total sample is listed. As a result, some periods appear very long. The exact periods of the respective samples can be found in the wave reports.
This table includes waves from the years before 2011, as the first SOEP-IS samples were originally drawn as part of SOEP-Core.
Year |
Start |
End |
Note |
|---|---|---|---|
1998 |
April 1998 |
September 1998 |
In this year, the first sample was drawn, which later became part of SOEP-IS |
2009 |
September 2009 |
January 2010 |
In this year, another sample was drawn, which later became part of SOEP-IS. This sample had a different survey period than the „normal“ samples. This period is referenced here |
2010 |
September 2010 |
February 2011 |
Last year in which the later SOEP-IS samples were part of SOEP-Core. The sample drawn in 2009 still had a different survey period than the „normal“ samples. This period is referenced here |
2011 |
September 2011 |
March 2012 |
First year of SOEP-IS as separate study |
2012 |
June 2012 |
March 2013 |
|
2013 |
August 2013 |
March 2014 |
|
2014 |
September 2014 |
April 2015 |
In this year, the BIP-Sample was part of SOEP-IS for the first time |
2015 |
August 2015 |
March 2016 |
|
2016 |
September 2016 |
March 2017 |
|
2017 |
September 2017 |
March 2018 |
|
2018 |
September 2018 |
March 2019 |
|
2019 |
September 2019 |
March 2020 |
|
2020 |
September 2020 |
March 2021 |
In this year, the BIP-Sample was part of SOEP-IS for the last time |
2021 |
N/A |
N/A |
No survey was conducted in 2021 |
2022 |
May 2022 |
November 2022 |
This year, infas was the survey institute of SOEP-IS for the first time |
2023 |
May 2023 |
November 2023 |
|
2024e |
November 2024 |
May 2025 |
Survey still running, end date may differ |
2025e |
August 2025 |
March 2026 |
Estimated survey period. The actual dates may may differ |
2026e |
August 2026 |
January 2026 |
Estimated survey period. The actual dates may may differ |