Table 1.

Attributes and Levels for Males and Females in the Stated Preference Survey

Attribute	Levels
Travel time	Your typical travel time
	10 min shorter than your typical travel time
	15 min longer than your typical travel time
	30 min longer than your typical travel time
Availability	Every day: Monday–Sunday
	Every weekday: Monday–Friday
	1 d every 2 mo: Monday–Friday
	1 d every 2 mo: Saturday or Sunday
Opening times	9 am–12 pm and 2 pm–5 pm
	9 am–5 pm
	9 am–8 pm
	2 pm–8 pm
Health report provided	No
	Yes, after each donation
Maximum permitted number of donations per year	Female	Male
	3 donations per year	4 donations per year
	4 donations per year	5 donations per year
		6 donations per year