Table 4.
Social contact in people testing positive for SARS-CoV-2 (cases) and controls, with odds ratios
| Cases | Controls | Univariate analysis | Multivariable analysis | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Exposed | % | Exposed | % | Odds ratio | (95% CI) | P value | Odds ratio | (95% CI) | P value | ||
| n = 199 | n = 2610 | ||||||||||
| Caring responsibilities | Yes | 39 | 19.6 | 649 | 24.9 | 0.74 | 0.51–1.06 | 0.097 | 0.66 | 0.42–1.05 | 0.080 |
| n = 198 | n = 2598 | ||||||||||
| Attended an event of gathering | Yes | 10 | 5.1 | 224 | 8.6 | 0.56 | 0.29–1.08 | 0.084 | 0.61 | 0.30–1.23 | 0.166 |
| n = 199 | n = 2628 | ||||||||||
| Household visitors in last 10 days | Yes | 29 | 14.6 | 221 | 8.4 | 0.30 | 0.20–0.45 | 0.000 | 0.48 | 0.35–0.66 | 0.000 |
| n = 198 | n = 2611 | ||||||||||
| Household overnight visitors in last 10 days | Yes | 11 | 5.6 | 176 | 6.7 | 0.81 | 0.43–1.52 | 0.520 | 2.09 | 0.95–4.59 | 0.067 |
| n = 199 | n = 2618 | ||||||||||
| Attended face-to-face healthcare appointment | Yes | 13 | 6.5 | 355 | 13.6 | 0.45 | 0.25–0.79 | 0.006 | 0.48 | 0.25–0.91 | 0.026 |
| n = 199 | n = 2622 | ||||||||||
| Visited a shop | Yes | 158 | 79.4 | 2409 | 91.9 | 0.34 | 0.23–0.49 | 0.000 | 0.46 | 0.28–0.76 | 0.003 |
| n = 199 | n = 2628 | ||||||||||
| Visited a supermarket | Yes | 99 | 49.7 | 1830 | 69.6 | 0.43 | 0.32–0.57 | 0.000 | 0.52 | 0.36–0.76 | 0.001 |
| n = 199 | n = 2628 | ||||||||||
| Visited a pub | Yes | 8 | 4.0 | 38 | 1.4 | 2.85 | 1.31–6.21 | 0.008 | 4.54 | 1.82–11.32 | 0.001 |
| n = 199 | n = 2628 | ||||||||||
| Visited a restaurant or pub serving food | Yes | 16 | 8.0 | 222 | 8.4 | 0.95 | 0.56–1.61 | 0.842 | 1.06 | 0.58–1.96 | 0.841 |
| n = 199 | n = 2628 | ||||||||||
| Visited a gym/leisure centre | Yes | 9 | 4.5 | 108 | 4.1 | 1.11 | 0.55–2.22 | 0.778 | 0.84 | 0.35–1.97 | 0.681 |
| n = 198 | n = 2604 | ||||||||||
| Face to face conversation <2 m, >15 min with people outside household | No-one | 85 | 42.9 | 1094 | 42.0 | Ref. | – | – | Ref. | – | – |
| 1–9 people | 88 | 44.4 | 1289 | 49.5 | 0.88 | 065–1.20 | 0.412 | 1.07 | 0.74–1.56 | 0.717 | |
| 10 or more people | 25 | 12.6 | 221 | 8.5 | 1.46 | 0.91–2.33 | 0.116 | 1.81 | 1.03–3.17 | 0.039 | |
| n = 198 | n = 2615 | ||||||||||
| Wearing a mask when leaving home | None of the time | 5 | 2.5 | 43 | 1.6 | Ref. | – | – | Ref. | – | – |
| Some of the time | 48 | 24.2 | 702 | 26.8 | 0.59 | 0.22–1.55 | 0.284 | 0.94 | 0.25–3.55 | 0.923 | |
| Most of the time | 145 | 73.2 | 1870 | 71.5 | 0.67 | 0.26–1.71 | 0.399 | 0.84 | 0.22–3.18 | 0.803 | |
| n = 172 | n = 2228 | ||||||||||
| Wearing a mask when meeting others outside | Never | 16 | 9.3 | 181 | 8.1 | Ref. | – | – | Ref. | – | – |
| Rarely or sometimes | 30 | 17.4 | 515 | 23.1 | 0.66 | 0.35–1.24 | 0.194 | 0.44 | 0.22–0.91 | 0.027 | |
| Usually or always | 126 | 73.3 | 1532 | 68.8 | 0.93 | 0.54–1.60 | 0.794 | 0.68 | 0.34–1.35 | 0.268 | |
| n = 176 | n = 2175 | ||||||||||
| Wearing a mask when meeting others inside | Never | 3 | 1.7 | 130 | 6.0 | Ref. | – | – | Ref. | – | – |
| Rarely or sometimes | 28 | 15.9 | 325 | 14.9 | 3.73 | 1.12–12.49 | 0.033 | 6.22 | 1.33–29.21 | 0.021 | |
| Usually or always | 145 | 82.4 | 1720 | 79.1 | 3.65 | 1.15–11.62 | 0.028 | 5.30 | 1.17–23.91 | 0.030 | |
Factors significantly associated with being a case in bold. Multivariable analysis carried out by adjusting for all other variables in the table.