Summary of contact characteristics per shift among patients and staff in an Emergency Department, over 81 shifts1.

1There were a total of 185 individuals in 81 shifts that did not make a contact while under surveillance. They are not included in these calculations.2The median and quartiles of each shift were calculated and the median of these values are reported. The median of all types will not be the sum of the 3 subtype medians.3All comparisons across groups types were significant by Friedman's test at p4A contact event is defined as any two people being within 1 meter of each other; multiple discontinuous instances between the same two individuals are here counted as multiple contacts.5One contact pair is defined as any two people who have at least one instance of being within 1 meter of each other ( = an edge or link); multiple discontinuous instances are here counted as a single contact.6Total hours/shift is the sum of all instances of contact. NB: shift duration ranged from 5 to 12 hours.