Household Transmission of SARS-CoV-2 in Bhutan

Table 3

Unadjusted prevalence ratio of risk factors for infectivity of SARS-CoV-2.

Risk factors		uPR (95% CI)	value
Factors of household contacts
Age
<18 years	123	1
≥18 years	183	0.88 (0.73,1.06)	0.174
Sex
Male	131	1
Female	175	0.98 (0.81, 1.18)	0.825
Relationship
Spouse	47	1
Relatives	83	0.81 (0.57, 1.15)	0.229
Child	99	1.31 (0.99, 1.75)	0.059
Parents/grandparents	31	0.93 (0.61, 1.43)	0.75
Others (neighbors/friends/employers)	46	1.14 (0.81, 1.6)	0.45
Comorbidity
Yes	17	1
No	289	1 (0.66, 1.51)	1
Vaccination
Yes	179	1
No	127	1.15 (0.96, 1.39)	0.133
Household size (categorical)
≤3 members	64	1
4-6 members	155	1.07 (0.83, 1.39)	0.591
≥7 members	87	1.13 (0.86, 1.5)	0.37
Household size	306	(0.95, 1.02)	0.426
Age	306	1 (0.99, 1)	0.396
Factors of index case
Age of index case
<18 years	39	1
≥18 years	267	1.88 (1.19, 2.95)	0.007
Index case sex
Male	156	1
Female	150	1.02 (0.84, 1.22)	0.859
Symptom status of index case
Symptomatic index	233	1
Asymptomatic index	73	0.85 (0.67, 1.09)	0.203
Vaccination status of index case
Yes	257	1
No	49	0.408 (0.25, 0.66)	<0.001

uPR: unadjusted prevalence ratio. 1: reference value. values were calculated using the generalized linear models for binomial family.