Table 1

Discrete choice attributes and levels

	Attribute	GP levels	HIV clinic levels
1.	The person you see is skilled at managing many general medical problems	Yes*	No*
2.	The person you see has the ability to refer you on to another healthcare professional if required	Yes*	Yes No†
3.	How quickly you will be seen	The same day
		The next day
		In 7 days
		In 14 days†
4.	An appointment outside of usual opening hours if you would like it	Unavailable†	Unavailable*
		Saturday 8:00–midday
		Monday–Friday 17:00–20:00
		8:00–20:00 7 days a week
5.	How many times the healthcare professional has previously been seen	Never†	Never†
		Once in the last year	Once in the last year
		Twice in the last year	Twice in the last year
		More than twice in the last year	More than twice in the last year
6.	The type of person who is seen	A GP without specialist HIV training†	A consultant HIV doctor
		A GP with specialist HIV training	A doctor training to specialise in HIV
			An HIV specialist nurse
			An HIV specialist pharmacist†
7.	The level of information the healthcare professional has access to	All medical records, except HIV details†	Just the HIV medical records†
		All medical records, including HIV details	All medical records, including HIV details

*Indicates the levels on this attribute do not vary, meanings its impact in terms of choice is included in the relevant alternative specific constant term.
†Indicates base level for each attribute.
GP, general practitioner.