Table 4.

Speech Intelligibility Index (SII) and Articulation Index (AI) measures made in three patient rooms on the standard unit in three acoustic conditions: No curtain, standard curtain, and Hush Curtain^®

Refurbished unit two -bed-occupied room “F”	No curtain		Standard curtain		Hush Curtain®
	SII	AI	SII	AI	SII	AI
Doorway	0.581	0.487	0.553	0.454
2nd patient bed	0.536	0.428	0.503	0.389
Hallway	0.357	0.241	0.442	0.333
Patient to nurse station	0.009	0.000	0.010	0.000
Nurse station to patient	0.146	0.039	0.131	0.034
Two-bed-unoccupied
Room “G”
Doorway	0.706	0.639	0.674	0.597	0.511	0.404
2nd patient bed	0.592	0.492	0.570	0.470	0.375	0.264
Hallway	0.501	0.408	0.468	0.366	0.378	0.263
Patient to nurse station	0.020	0.003	0.019	0.001	0.010	0.000
Nurse station to patient	0.193	0.075	0.172	0.061	0.115	0.033
One-bed-unoccupied
Room “H”
Doorway	0.644	0.559	0.614	0.523	0.612	0.521
Hallway	0.449	0.328	0.403	0.278	0.394	0.266
Patient to nurse station	0.262	0.149	0.249	0.136	0.203	0.092
Nurse station to patient	0.274	0.150	0.261	0.135	0.215	0.096