In the 1995 Finnish Health Security Survey, the data in the main survey was collected by professional interviewers of Statistics Finland and in a smallerscale comparative survey, by public health nurses of local health centres. The response rate was 88% in the main survey and 74% in the comparative survey. There appeared to be significant differences in attitudes of interviewers towards the role of the interviewer between these two different interviewing schemes. The effect of the segregation of attitudes to nonresponse was, however, not substantial. The results are important for survey design because reluctancy to participate in surveys is increasing.