Table 4.

Bivariate analyses of index patient and HH characteristics by HH transmission of the clinical isolate among pooled data

	HH transmission N = 67		No HH transmission N = 229
	N	%	N	%	POR	(95% CI)	P
Index patient sociodemographic characteristics
Male	27	40	104	45	0.9	0.6 – 1.4	0.65
≤18 years	20	30	50	22	1.2	0.8 – 1.9	0.46
Born in country	32	48	112	49	1.5	0.9 – 2.5	0.15
Graduated high school	38	57	129	56	1.2	0.8 – 1.8	0.44
Index patient acquisition risk factors
In day care	5	7	9	4	1.4	0.7 – 2.8	0.28
In school	12	18	45	20	0.8	0.4 – 1.3	0.33
Working	23	34	93	41	0.8	0.5 – 1.2	0.30
Plays sports	27	40	89	39	1.2	0.7 – 1.8	0.50
Recent international travel	19	28	90	39	0.7	0.5 – 1.2	0.24
Recent surgery	13	19	53	23	0.9	0.5 – 1.6	0.75
Recent hospital admission	18	27	84	37	0.8	0.5 – 1.3	0.28
Index patient transmission risk factors
Recent skin condition	14	21	66	29	0.7	0.4 – 1.3	0.28
Recent abscess	47	70	148	65	0.9	0.5 – 1.7	0.84
Index patient colonized with the clinical isolate	26	39	55	24	2.2	1.4 – 3.5	<.001
Other HH member acquisition risk factors
Recent surgery	9	13	28	12	1.1	0.6 – 2.0	0.82
HH transmission risk factors
Pet presence (dog/cat)	27	40	85	37	1.1	0.7 – 1.7	0.63
Towel sharing	32	48	108	47	1.2	0.8 – 1.9	0.34
Razor sharing	9	13	27	12	1.0	0.5 – 1.9	0.98
Recent skin condition	26	39	102	45	0.8	0.5 – 1.3	0.43
Recent abscess	54	82	165	72	1.2	0.7 – 2.3	0.51
	Mean	SD	Mean	SD	POR	(95% CI)	P
HH sociodemographic characteristics
Household size	4.1	1.9	3.6	1.6	1.1	1.0 – 1.3	0.05
Percent of males (× 10)	0.5	0.2	0.5	0.2	1.0	0.9 – 1.1	0.98
Percent of children <18 years (×10)	33.5	24.0	22.5	24.1	1.1	1.0 – 1.2	0.01
Time to Interview
Days from clinical culture to interview (×10)	49	42	65	63	1.0	0.9 – 1.0	0.07

POR = Prevalence odds ratio

HH = household