Variables	Values	Would use VI (%)	n	chi-square	P-value
Use voice input	Never use	40.8	716	96.538	.000
	Use	66.4	747
Gender	Women	53.7	844	1.111	.292
	Men	56.6	541
Age	18-24	54.0	285	4.236	.375
	25-34	51.2	402
	35-44	53.1	426
	45-54	58.5	241
	54+	58.4	113
Education	Secondary or less	58.7	385	4.404	.036
	More than secondary	52.5	1,082
Internet use on Smartphone	Daily	54.8	1,345	4.315	.038
	Less often	45.1	122
Mother tongue Spanish	No	44.7	103	4.033	.045
	Yes	54.9	1361
Answer survey from home	No	52.8	415	0.808	.369
	Yes	55.4	1033
Alone while answering survey	No	56.3	513	1.105	.293
	Yes	53.5	939
Difficulty answering the survey	No	55.0	1396	8.069	.005
	Yes	37.3	67
Completion time	<=15 minutes	53.7	1107	2.590	.107
	>15 minutes	58.8	313