Table 4.

Household Contact Characteristics by Household Contact Colonization Status

Characteristic	CPE-Negative Household Contacts (n = 161)	CPE-Colonized Household Contacts (n = 16)	P Value
Female sex, n (%)	98 (61)	12 (75)	.4
Age, median (IQR), years	41 (23–61)	68 (40–78)	.001
Charlson score of 1 or greater, n (%)	12 (7)	4 (25)	.04
Relationship to index case, n (%)
Spouse	42 (26)	14 (88)	<.0001
Child	44 (27)	2 (13)
Other	75 (47)	0 (0)
Receipt of antibiotics in prior 6 months, n (%)a	27 (19)	3 (19)	1.0
Travel in prior year (with/without hospitalization), n (%)
Indian subcontinent	68 (42)	12 (75)	.04
Other countries except United States/northern Europe)	14 (9)	1 (6)
None or United States/northern Europe	79 (49)	3 (19)
Hospitalization in prior year, n (%)
Outside Canada	3 (2)	0 (0)	.8
In Canada	12 (7)	1 (6)
None	146 (91)	15 (94)
Contact with index case, n (%)
Skin-to-skin contact almost daily	61 (38)	6 (38)	1.0
Always share primary bathroom	75 (47)	14 (88)	.002
Always share hand/body towels	39 (24)	7 (44)	.09
All home visits prior to introduction of direct polymerase chain reaction, n (%)	111 (69)	3 (19)	.0001

Abbreviations: CPE, carbapenemase-producing Enterobacterales; IQR, interquartile range.

^aData missing for 22 household contacts, as this question was not added to the data collection form until December 2015.