Design and Fielding of the pairfam panel Josef Brüderl, Laura Castiglioni, Ulrich Krieger, Volker Ludwig, Klaus Pforr MZES, University of Mannheim

Contents Design Guiding Principles Field Report Time Schedule for Data Release

Design of the pairfam study Sampling frame oGerman resident population oN=12,000 anchors oMulticohort sequence design (birth cohorts , , and )‏ oInterviewed alteri: partners, parents, children Wavelength: One Year (surveys conducted Oct. – March)‏ Questionnaire development by pairfam group Fieldwork by TNS Infratest (Munich)‏

The pairfam Multi-Actor Design wave 1 wave 2 and following Anchor CAPI Partner Anchor CAPI Partner Children living with anchor years Up to 3 Parents wave 1 wave 2 and following Anchor CAPI Partner Anchor CAPI Partner Children living with anchor 8-15 years Up to 3 Parents

Anchor Interview (I)‏ Target population: German residents with sufficient language proficiency, birth cohorts , , Wave 1 Sample oPopulation register sample o343 randomly selected German municipalities provided a total of 60,000 addresses with aim of 12,000 interviews Wave 2 and following oW2: only W1 participants oStarting W3: W1 participants that did not miss more than one consecutive wave. Child survey participants older than 15 become anchor respondents

Anchor Interview (II)‏ Survey Mode: CAPI including CASI segments Duration: Wave 1 60 minutes, Waves 2ff 70 minutes Incentives: 10€ cash upon completion of the interview

Partner Survey Target: current partner of anchor If the anchor is in a relationship, he / she is asked if the partner could be contacted as well. Survey Mode: 24p PAPI-questionnaire Incentive: 5€ ticket to charity lottery Field procedures oQuestionnaire handed out by Interviewer, left behind with anchor or sent to partner oQuestionnaire can be collected by the interviewer or sent back with provided return envelope

Child Survey (I)‏ - as of wave 2 Target: youngest child, 8 to 15 yrs. living with Anchor oBiological, step, foster or adopted children oAnchor has to give consent to the interview Wave 3 (and following): oW2 target children if younger than 16 oPlus additional new children that now meet W2 criteria (now 8 years old, now living with Anchor‏ oTarget children older than 15 enter Anchor survey

Child Survey (II)‏ Survey mode: CAPI Duration: 15 minutes Incentive: small gift (worth 5€)‏

Parenting survey – as of wave 2 Target: parents of child survey target children (defined as anchor and cohabiting partner)‏ One questionnaire for anchor and partner for each of the child survey respondents Survey Mode: 6p PAPI questionnaire Incentive: None Field Procedure: oAnchor: handed out during CAPI Interview. Questionnaire can be collected by interviewer after the interview or sent back with return envelope oPartner: given to partner and back to Infratest together with partner questionnaire

Parents Survey (I)‏ - as of wave 2 Target: biological (or adoptive) parents of anchor and their partners (step-parents)‏ oIf Anchor lived with adoptive parents before age 6, adoptive parents are interviewed (instead of biological)‏ oIf more than three parents (contact to both biological and step- parents), stepmother will not be considered Consent of Anchor required Anchor has contact to parents‏

Parents Survey (II)‏ Survey Mode: PAPI-questionnaire Duration: 26 pages (approx minutes)‏ Incentives: 5€ ticket to charity lottery Field Procedures: oQuestionnaires sent to parents (in separate envelopes)‏ oQuestionnaire to be returned with prepaid envelope

Guiding Principles of pairfam Design (I)‏ Main Design Directive: Keep Respondents in the panel Reducing burden oUse of CASI oNo repetitive questions oTailoring questionnaire to individual respondent oiLHC Increasing benefits from survey oIncentives oInteresting topics oConventional methods of panel care

Guiding Principles of pairfam Design (II)‏ Reducing the burden Mode switch to CASI for delicate questions Dependent Interviewing (DI): known facts are fed forward Tailoring questionnaire to individual respondent oAvoiding unnecessary questions with extensive routing in CAPI questionnaire IC-LHC (interactive continuous life history calendar)‏ oEase recall of life history with graphical calendar (and DI)‏

Guiding Principles of pairfam Design (III)‏ Increasing benefits from survey Incentives as a signal of appreciation Interesting topics Conventional Methods oletters (side-effect: panel-tracking)‏ orespondent homepage ointerviewer continuity

Preliminary Field Results - Wave 1 Anchor (Final Response Rate currently unknown)‏ 12,408Total 4,055Cohort ,017Cohort ,336Cohort Completed Interviews Partner 68% 73% 58% 3,600Received Questionnaires 5,276Consent of Anchor 7,237Partners available

Release of pairfam data – Wave 1 Dec 08 – May 09 Stata routines for data cleaning, preparation, anonymization, checks with preliminary data June 9, 2009 Anchor data received from TNS Infratest (N=12,408)‏ (Partner data expected by Aug. 15)‏ July 15, 2009 Release of version 0 to pairfam team Oct 8/9, pairfam user conference; release of version 1 to all users Jan 31, 2010 Release of version 2 to all users