Table 3.

Descriptions of Common Hearing Aid Satisfaction Measures

Measure	No. of Satisfaction Items/Scales	Type of Rating Scale	Comments
MarkeTrak IV or HASS (eg, Kochkin, 2000a, Humes et al., 2001)	40 items in 3 scales on Product Feature, Listening Situations, Service	5-point Likert scale of “very satisfied” to “very dissatisfied”	Scales set a priori, not evaluated for validity
SADL (eg, Cox and Alexander, 1999)	14 items in 4 scales: Positive Effect, Service and Cost, Negative Features, Personal Image and yield global score	7-point continuum of “not at all” to “tremendously”	Items generated by aid users & aggregated using factor analysis. Factor structure confirmed. Validity as correlation with overall satisfaction.
HAUQ (eg, Dillon et al., 1999)	Single item general satisfaction measure	4-point Likert scale of “very satisfied” to “very dissatisfied”	Not evaluated for validity or reliability
GHABP & Aid Benefit Interview (eg, Humes et al., 2001)	The final version contains satisfaction evaluation of 4 standard and 4 self-nominated situations, and one overall measure	4 to 5 alternatives of “not satisfied at all”, “to “delighted with the hearing aid for this situation”, overall satisfaction from 0 to 100	Importance-ranked situations selected to maximize ability to distinguish outcome. Internal consistency & test-retest reliability evaluated