TABLE 1.

Demographic information of participants. F, M, and O indicate the participant IDs.

Group	Age (SD)	Care level (SD)	Sp a	Be b
No-face	$86.3\left(4.21\right)$	$3.36\left(0.81\right)$	M, O	M
Face	$86.9\left(6.62\right)$	$3.4\left(0.97\right)$	F	F

^aParticipants with speech difficulty.

^bBedridden participants.