Table 1.

Demographic Characteristics and Study Attendance Among Adult Participants Enrolled During 2010 or 2011

Participant	Demographic Characteristic				Enrollment Visit, Year		Follow-up Visit, Year
	Sex	Age, y	Ethnicity	Race	2010	2011	2nd, 2012	3rd, 2013	4th, 2014
1	Male	20	Non-Hispanic	Asian	…	Yes	Yes	No	No
2	Female	22	Non-Hispanic	“Asian, Other (Vietnamese)”a	…	Yes	Yes	Yes	No
3	Female	23	Non-Hispanic	Asian	…	Yes	Yes	Yes	No
4	Female	22	Non-Hispanic	Asian	…	Yes	Yes	Yes	No
5	Female	23	Non-Hispanic	Asian	…	Yes	Yes	No	No
6	Female	23	Non-Hispanic	Caucasian or White	…	Yes	Yes	No	No
7	Female	19	Non-Hispanic	Asian	…	Yes	Yes	Yes	No
8	Male	30	Non-Hispanic	“Caucasian or White, Asian”a	…	Yes	Yes	Yes	Yes
9	Female	23	Hispanic	Caucasian or White	…	Yes	Yes	Yes	No
10	Male	21	Non-Hispanic	Caucasian or White	…	Yes	Yes	Yes	No
11	Male	20	Non-Hispanic	Caucasian or White	…	Yes	Yes	No	No
12	Female	18	Non-Hispanic	Caucasian or White	…	Yes	Yes	Yes	Yes
13	Male	20	Non-Hispanic	Caucasian or White	…	Yes	Yes	Yes	Yes
14	Female	24	Non-Hispanic	Caucasian or White	…	Yes	Yes	No	No
15	Female	22	Non-Hispanic	Asian	…	Yes	Yes	No	No
16	Female	25	Hispanic	Caucasian or White	…	Yes	Yes	No	No
17	Male	18	Non-Hispanic	Caucasian or White	…	Yes	Yes	No	No
18	Male	24	Non-Hispanic	Asian	…	Yes	Yes	No	No
19	Male	20	Non-Hispanic	Caucasian or White	…	Yes	Yes	Yes	Yes
20	Female	23	Non-Hispanic	Caucasian or White	Yes	…	Yes	Yes	Yes
21	Female	25	Non-Hispanic	Caucasian or White	Yes	…	Yes	Yes	Yes
22	Female	19	Hispanic	Decline to answer	Yes	…	Yes	Yes	No
23	Female	20	Non-Hispanic	Asian	Yes	…	Yes	No	No

^aQuoted from the participant.