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Table 1 Sample time-tradeoff and willingness to pay questions

From: Values for preventing influenza-related morbidity and vaccine adverse events in children

Introduction:
When thinking about the following questions:
   Do not include the costs of medical services or prescription medications. Assume these would already be covered by full insurance even if you don't have this now.
   Do include the value of preventing the following for you or your child: pain and suffering, inconvenience, and lost time for productive activities (paid work or work in the home) or leisure time.
Time-tradeoff Question: Think about what portion of your remaining life, if any, you would be willing to trade off from the end of your life to prevent the flu in your 1-year-old child. You can choose any amount of time in days, weeks, months or years.
Would you be willing to trade off a portion of your remaining life in order to prevent the flu in your 1-year old child? Remember that we are asking you to imagine what portion of YOUR OWN life you would be willing to trade off to prevent influenza in YOUR CHILD.
Willingness to Pay Question: Would you be willing to pay some amount of money to prevent an episode of the flu in your one-year-old child?
   [If Yes] Would you be willing to pay $200?
[If yes] Would you be willing to pay $400?
[If no] Would you be willing to pay $100?
What is the most you would be willing to pay?