Table 2

Multiple logistic regression of factors affecting seropositivity

VariableOR (95% CI)ZP value
Age1.01 (0.99 to 1.02)0.620.53
Sex (female)1.35 (0.93 to 1.98)1.560.12
Ethnicity (BAME)1.90 (1.30 to 2.81)3.260.001
Household co-occupants1.04 (0.91 to 1.20)0.590.55
Index of multiple deprivation score1.04 (0.84 to 1.28)0.330.74
Primary symptoms1.22 (0.87 to 1.72)1.160.25
Public transport0.91 (0.60 to 1.37)0.460.65
  • Seropositivity at the time of study enrolment was used as the dependent variable. Participants’ age, sex, ethnicity (white vs BAME), number of household co-occupants, the index of multiple deprivation score, whether an individual isolated because they directly experienced symptoms or isolated because a family member experienced symptoms and public transport use in the 2 weeks prior to isolation were used as independent variables. ORs and 95% CIs are provided. The area under the receiver operator curve of this model was 0.58, p=0.0007.

  • BAME, black, Asian and minority ethnic.