Table 1.

Questionnaire items.

Domain and question No.		Question
HMDa headset
	1	How is the physical comfort of the device?
	2	How heavy is the device?
	3	Does the visualization (café) match well with the audio?
	4	How is the sound quality?
VSHMDb condition
	5	Without hearing aids: How immersive was the virtual space? Did you feel like you were in a real café?
	5-1	With hearing aids: How immersive was the virtual space? Did you feel like you were in a real café?
	6	Without hearing aids: How much effort did you have to spend to understand speech?
	6-1	With hearing aids: How much effort did you have to spend to understand speech?
	7	How much did the virtual space (café) reflect reality?
	8	Does the virtual reality technology need to be used for clinical testing?
	9	Was the café an appropriate place to use as the virtual space?
	10	Was the test structured to be easily understood?
	11	Was the test interesting?
Tests
	12	Which test do you prefer the most?
	13	Which test required the most amount of effort for listening?
	14	Which test would encourage hearing aid use?
	15	Which test would assess communication difficulties better?
cK-HINTc versus VSHMD condition
	16	Describe any differences between conventional testing (without visual cues) and the VSHMD (visualization through the headset).
	17	Describe strengths and weaknesses of conventional testing (without visual cues) and the VSHMD (visualization through the headset).

^aHMD: head-mounted display.

^bVSHMD: virtual space head-mounted display.

^ccK-HINT: conventional Korean version of the Hearing in Noise Test.