The long-term effectiveness of refusal conversion procedures on longitudinal surveys
利用英国家庭面板调查1994-2002年数据，评估拒绝转化程序在样本量、样本构成和数据质量方面的长期效果，对调查设计者和研究者判断是否值得投入资源进行拒绝转化有参考价值。
Survey organisations often attempt to 'convert' sample members who refuse to take part in a survey. Persuasive techniques are used in an effort to get the refusers to change their mind and agree to an interview. This is done in order to improve response rate and, possibly, to reduce non-response bias. However, refusal conversion attempts are expensive and must be justified. Previous studies of the effects of refusal conversion attempts are few and have been restricted to cross-sectional surveys. The criteria for 'success' of a refusal conversion attempt are different in the case of a longitudinal survey, where for many purposes the researcher requires complete data over multiple waves. This paper uses data from the British Household Panel Survey (BHPS) from 1994 to 2002 to assess the long term effectiveness of refusal conversion procedures in terms of sample sizes, sample composition and data quality.