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Record Linkage : a key and challenging process for CATI surveys. ESSnet on Data Integration, Neuchâtel Christian Panchard and Claude Joye , SFSO February 11, 2011. Outline 1. Telephone sampling frame CASTEM (up to now); 2. Persons register-based frame : SRPH (new);
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Record Linkage :a key and challenging process for CATI surveys.ESSnet on Data Integration, NeuchâtelChristian Panchard and Claude Joye , SFSO February 11, 2011
Outline • 1. Telephone sampling frame CASTEM (up to now); • 2. Persons register-based frame : SRPH (new); • Link between the two frames : • - Objectives; • - Problems; • - Solutions. • 4. First conclusions / Discussion.
Eidgenössisches Departement des Innern EDIBundesamt für Statistik BFS 1. CASTEM : fixed telephone numbers and households overcoverage undercoverage undercoverage
SRPH Persons 1 Household forming 2 2. Register-based sampling frame SRPH (persons)
3. Link between the two frames SRPH CASTEM AIM : Draw samples in SRPH and get telephone numbers in CASTEM for CATI surveys. → Link through name, first name and address (IIR).
SRPH Sample of persons 1 Household forming 2 Matching with CASTEM 3 ? Accessible through a fixed telephone Not accessible through a fixed telephone
PROBLEMS : • Standardisation before applying the matching program; • Misspeling in the name, first name or/and address; • Household forming (building and dwelling link in person data); • Matching pair wrong! • Undercoverage (CASTEM);
SOLUTIONS : • Fine tuning of the program IIR (cascade strategy); • Further develop the quality of household forming; • Use of alternative modes for conducting the surveys; • Compute (estimate) the false matching pairs.