Table 2.

Multivariate analysis of significant risk factors for SARS-CoV-2 in univariate analysis (Table 1). Controlling for ethnicity and having a household member who works in a care home, travel to work by bus is not a significant predictor of seropositivity.

Risk factor	OR	95% CI – lower OR	95% CI – higher OR	p-value	Concordance
(Intercept)	0.364	0.163	0.792	0.012	0.694
Age category
40–59	1.784	0.998	3.215	0.052
60+	1.105	0.435	2.741	0.831
Ethnic group
Asian	2.034	1.038	4.049	0.040
Black	1.788	0.941	3.425	0.077
Mixed	0.807	0.101	4.781	0.820
Other	0.917	0.150	5.211	0.921
Care home of employment
Home B	1.164	0.513	2.640	0.716
Home C	1.186	0.581	2.428	0.639
Home C	2.166	0.984	4.875	0.057
Travel by car	0.797	0.375	1.679	0.552
Travel by bus	1.154	0.615	2.163	0.654
Travel by ‘other’	0.890	0.376	2.089	0.790
Resides at place of work	2.802	0.848	10.336	0.100
Household member works in care home	2.973	1.326	7.041	0.010
Household member works in hospital/GP surgery	0.356	0.125	0.915	0.039