Table 4

WTP to move between options. The WTP figures indicate the cash amount (in Singapore dollars, at 2013 prices S$1≈US$0.80) required to make respondents indifferent between two neighbouring attribute levels, with arrows representing the direction in which the individual would be willing to pay to move. For instance, participants would pay S$15 (as revealed by their choices) to move from a voluntary to a mandatory quarantine policy

AttributeLevelWTP (95% CrI)Level
Quarantine of potential casesVoluntaryS$15 (S$8, S$24)Mandatory
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Isolation of actual casesVoluntaryS$8 (S$1, $16)Mandatory
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Cancellation of mass gatheringsNoneS$27 (S$14, S$48)School closure
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NoneS$30 (S$17, S$51)School closure and other mass gatherings
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Temperature screeningNoneS$12 (S$2, S$26)At border
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NoneS$21 (S$11, S$36)At border and other sites
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Number of infections200N.S.500
200S$15 (S$4, S$29)1000
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200N.S.10 000
200N.S.1 000 000
Number of deaths0S$34 (S$19, S$58)30
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0S$70 (S$45, S$112)80
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0S$71 (S$49, S$109)120
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0S$98 (S$69, S$148)180
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  • N.S. as S$0 included in the 95% CrI.

  • CrI, credible interval; N.S., not significant; WTP, willingness to pay.