Table 2

Number of questionnaires returned, total costs, and costs per respondent

ParticipantsQuestionnaires returnedTotal costs (AUD)Costs per respondent (AUD)
Sample ASample BSample ASample B
*At this stage there were also 19 other responses, including refusals and wrong addresses; †at this stage there were also 18 other responses, including refusals, wrong addresses and deceased; ‡average cost; §marginal cost.
1 Those who responded before randomisation2009296*16†156014‡
2 Those telephoned4329201185127§
3 Those not telephoned42299338632§