Study Arm Number of Item Non-Responses / Number of Completed Demographic Surveys (Percentage)
Survey Item	Integrated Demographics	Optional Demographics
Income	80/484 (16.5)*	44/420 (10.5)
Education	2/484 (0.41)	4/420 (0.95)
Ethnicity	7/484 (1.4)	7/420 (1.7)
Race	9/484 (1.9)	4/420 (0.95)