Table 4

Risk factors for SARS-CoV-2 household transmission: multivariable analysis

Risk factorAdjusted OR95% CIP value
Primary case has diarrhoea
 Yes4.10(1.08 to 15.60)0.04
Close contact at home with primary cases (within 1 m or 3 feet) (times)
 1–33.30(1.05 to 10.40)0.04
 ≥418.26(3.93 to 84.79) 0.001
No of family members (including primary case) wearing a mask at home before the primary case’s illness onset date
 1 or more0.21(0.06 to 0.79)0.02
Frequency of chlorine or ethanol based disinfectant use for house cleaning
 Once in 2 or more daysRef
 Once a day or more0.23(0.07 to 0.84)0.03