Table 2.

Results of augmentative and alternative communication intervention

Patient	Training time (min)	Click Test at t0 (s)	Hours of use per day	Purpose	QUEST 2.0-Dev	GRC
1	60	23	8	Scanning+bell	4.88	6
2	45	25	8	Scanning+bell	4.75	5
3	45	26	8	Scanning+bell	4.63	6
4	60	24	2	Scanning	4.38	–
5	30	20	8	Scanning+bell	4.63	6
6	30	18	1	Scanning	4.50	–
7	60	19	4	Scanning+bell	4.63	7
8	45	23	6	Scanning+bell	4.75	6
9	30	21	7	Scanning+bell	4.88	7
10	45	32	7	Scanning+bell	5.00	6
11	60	11	7	Bell	4.25	6
12	45	13	7	Bell	4.88	6
13	60	18	1	Scanning+bell	4.00	5
14	30	25	8	Scanning+bell	4.75	5
15	30	27	8	Scanning+bell	4.25	5
16	45	18	1	Scanning+bell	4.63	6
17	60	19	2	Scanning	4.63	–
18	60	25	6	Scanning	4.75	–
19	30	65	8	Scanning	5.00	–
20	45	47	2	Scanning	4.50	–
Mean	45.75	24.95	5.45	Median	4.63	6
SD	12.38	12.02	2.84	IQR	4.50–4.82	5–6

IQR Interquartile range. GRC was administered to detect the self-perceived improvement in use of the emergency bell only