Table S1.

Example of contingent valuation questions

Next question is hypothetical and there is no correct or wrong answer.

Before answering, please take the time to consider that to pay for a drug treatment for ovulation induction leads to a reduction in the amount of money available to pay for other goods and services (e.g. hobbies, clothes, travelling, etc.).

Assuming that you cannot have any more ovulations and you have to pay from your own pocket the cost of drug treatment for ovulation again, would you be willing to pay 1,000 Canadian dollars?

□ Yes □ No □ I do not know

Are you sure of your answer?

□ Not very sure □ Not sure □ More or less sure □ Sure □ Very sure