Table 3.

Contact Patterns by Job Roles of Healthcare Workers, Hospital Units, and Isolation Types

Characteristic	No. of Observations	Median (Min; 75th Percentile; Max) No. of Contacts
		Fomites			Self-contacts	Patient Contacts
		Near-patient Zone	Far-patient Zone	Total
Hospital unit
ICU	35	2 (0; 4; 16)	4 (0; 6;16)	6 (0; 8.5; 24)	1 (0; 4; 11)	2 (0; 4; 9)
CDU	51	3 (0; 4; 20)	5 (0; 11; 21)	10 (0; 14; 38)	1 (0; 4.5 18)	3 (0; 4; 11)
Non-ICU	48	2 (0; 4; 24)	4 (0; 7; 22)	8.0 (0; 10; 34)	1 (0; 3.3; 13)	2 (0; 3; 10)
Specialty	30	3 (0; 7; 32)	6 (0; 9.8; 25)	8.5 (0; 15.8; 34)	1 (0; 5.8; 11)	2 (0; 6.8; 12)
Test for differences between units		P = .24	P = .20	P < .05	P = .86	P = .44
HCW job role
Provider	41	2 (0; 4; 9)	2 (0; 2; 10)	3 (0; 6; 19)	4 (0; 6; 18)	2 (0; 3; 8)
Nurse	69	3 (0; 5; 24)	5 (0; 9; 25)	9 (0; 15; 34)	1 (0; 2; 11)	2 (0; 4; 12)
Nurse technician	37	2 (0; 4; 32)	7 (0; 10; 21)	10 (0; 14; 34)	1 (0; 2; 10)	3 (0; 4; 7)
Respiratory therapist	9	1 (0; 3; 11)	5 (2; 8; 16)	6 (3; 15; 19)	5 (0; 8; 13)	2 (1; 3; 7)
Others	8	0 (0; 6.3; 20)	8 (0; 12; 18)	8 (0; 15.3; 38)	1 (0; 8; 12)	0 (0; 3.3; 9)
Test for differences between groups		P = .17	P < .05	P < .05	P < .05	P = .23
Isolation type
Contact	4	5 (3; 9.8; 24)	8 (2; 9.3; 10)	13 (5; 19; 34)	2 (1; 2.3; 3)	4 (1; 6; 6)
Droplet	61	2 (0; 5; 16)	5 (0; 8; 25)	7 (0; 12; 34)	1 (0; 3; 12)	2 (0; 4; 11)
Contact and droplet	99	3 (0; 4; 32)	4 (0; 9; 22)	7 (0; 12; 38)	2 (0; 5; 18)	2 (0; 4; 12)
Test for differences between groups		P = .11	P = .44	P = .32	P = .18	P = .77

Abbreviations: CDU, clinical decision unit; HCW, healthcare worker; ICU, intensive care unit.