Main Study 2011/12, Study Number B68
1 Master sample: Adults (panel entry in 2007/08, ALWA)
1.1 Target persons: Adults of birth cohorts 1956 to 1986
- Sample: Panel sample. Follow-up survey with interviewees willing to participate in the panel of the birth cohorts 1956 to 1986 of the forerunner study 2007/08 (ALWA).
2 Complementary sample: Adults (panel entry in 2009/10)
2.1 Target persons: Adults of birth cohorts 1944 to 1986
- Sample: Panel sample. Follow-up survey with interviewees willing to participate in the panel.
3 Complementary sample: Adults (panel entry in 2011/12)
2.1 Target persons: Adults of birth cohorts 1944 to 1986
- Sample: Sample drawn from the register of residents (with the selection stages communities and individuals). The sample contains individuals from the birth cohorts 1944 to 1986.
Number of cases:
n (approx.)
|
explanation |
14,112 |
Interviewees, of these:
|
5,380 |
1.1 interviewees from the master sample
|
3,524 |
2.1 interviewees from the complementary sample
|
5,208 |
3.1 first-time interviewees
|
Field time: October 10, 2011, to May 20, 2012
Data collection: Infas – Institute for Applied Social Sciences, Bonn
Mode of survey: Computer-assisted personal interview (CAPI) or computer-assisted telephone interview (CATI)