Table 1.

Baseline characteristics of participants in the Berkeley COVID-19 Safe Campus Initiative by study cohort, June–August 2020

	All	Students	Essential workers	Faculty/staff
N (row %)	2918 (100)	2180 (74.7)	268 (9.2)	470 (16.1)
Age, mean±SD	29.4±11.6	24.3±5.4	42.5±12.3	45.2±12.3
Gender, n (column %)
Man	1177 (40.3)	911 (41.8)	103 (38.4)	163 (34.7)
Woman	1653 (56.6)	1187 (54.4)	164 (61.2)	302 (64.3)
Non-binary/other	51 (1.7)	46 (2.1)	1 (0.4)	4 (0.9)
Race/ethnicity, n (column %)*
American Indian/Alaska Native	39 (1.3)	29 (1.3)	2 (0.7)	8 (1.7)
Asian/Pacific Islander	833 (28.5)	703 (32.2)	66 (24.6)	64 (13.6)
Black/African American	103 (3.5)	83 (3.8)	16 (6.0)	4 (0.9)
Hispanic/Latine/Spanish origin	402 (13.8)	328 (15.0)	39 (14.6)	35 (7.4)
White	1814 (62.2)	1261 (57.8)	160 (59.7)	393 (83.6)
Other	280 (9.6)	223 (10.2)	31 (11.6)	26 (5.5)
Programme level, n (column %)
Undergraduate	–	1114 (51.1)	–	–
Graduate	–	1039 (47.7)	–	–
Living at fraternity/sorority, n (column %)	–	125 (5.7%)	–	–
Education, n (column %)
High school diploma/GED	–	–	6 (2.2)	0 (0)
Some college or trade school	–	–	59 (22.0)	13 (2.8)
Bachelor’s degree	–	–	78 (29.1)	119 (25.3)
Graduate/professional degree	–	–	121 (45.1)	337 (71.7)
Department, n (column %)
Health services	–	–	129 (48.1)	–
Facilities/building services	–	–	61 (22.8)	–
Student services/other	–	–	77 (28.7)	–
Job title, n (column %)
Faculty	–	–	–	110 (23.4)
Staff	–	–	–	311 (66.2)
Postdoctoral scholar/other	–	–	–	49 (10.4)
Currently working outside the home, n (column %)	748 (25.6)	418 (19.2)	228 (85.1)	102 (21.7)
Pre-enrolment COVID-19 diagnosis, n (column %)	12 (0.4)	8 (0.4)	1 (0.4)	3 (0.6)

Missing responses: n=37 gender, n=126 race/ethnicity (non-Hispanic categories), n=49 race/ethnicity (Hispanic category), n=27 programme level, n=41 fraternity/sorority, n=5 education, n=1 department, n=71 working outside home, n=43 pre-enrolment diagnosis.

*Categories not mutually exclusive.

GED, General Education Development (high school equivalency) test.