Table 1

Attributes and levels included in the study

AttributeLabelCodings
Extent to which the doctor gives sufficient time to listen ....TIMEDIFF• Always=2
• Sometimes=1
• Rarely=0
Extent to which treatment seems to relieve symptomsRELIEVEDIFF• Completely=3
• Mostly=2
• Partially=1
• Rarely=0
Chance of experiencing side effects from treatmentEFFECTSDIFF• 1 in 5=20%
• 1 in 10=10%
• 1 in 25=4%
Extent to which the patient sees the same doctor for every visit ....TREATDIFF• Always=2
• Sometimes=1
• Never=0
Extent to which the doctor treats the patient as a whole person ....WHOLEDIFF• Does=1
• Does not=0
Travel costs of attending asthma consultationTRAVELDIFF• £0=0
• £10=10
• £25=25
• £40=40