Table 8.

Respondents’ WTP for attributes of a blood donation service.

Variables	Mean WTP estimates (N)	95% C. I.
Waiting time
At most 1 h	477.645	(59.732, 895.558)*
At most 2 h	158.809	(−100.383, 418.001)
Incentives
Meal voucher	−608.186	(−1,210.598, −5.774)*
Free medical check-up	1312.625	(349.178, 2,276.072)*
Access to donated blood
Donor only	−576.769	(−1,016.240, −137.299)*
Anybody in need	−334.378	(−665.232, −3.523)*

C.I.: confidence interval; *Confidence interval does not include zero.