Using the Last Two Numbers of an Address for Objective Respondent Selection within a Household
The Personal Information Protection Act (PIP Act) became effective in Taiwan in October 2012. To comply with the stipulations of the PIP Act, the Ministry of the Interior started restricting the use of any personal information from the population register, even for academic research. Unsurprisingly, the large-scale face-to-face surveys with the newly designed address-based sampling (ABS) strategies, after 30 years of reliance on governmental register-based sampling, became less feasible and reliable. ABS often requires selection, in each household, of a single person or one respondent only as the designated (or target) respondent for the interview. Leslie Kish pioneered the random selection of members within a household. Since then, several approaches of selecting household members have been adopted in survey practices. A technique in which the interviewer used the last two digits of the address number to randomly select the designated respondent was designed in this study. To investigate the performance of the proposed method, we conducted a simulation to generate samples by using various sample selection methods. In addition, we used a pilot survey of ABS to explore the effectiveness of the proposed method.