Table 1 Predictors of transmission (participant primay case, 177 household ILI events)
Explanatory variable | Transmission % for group | Univariate logistic regression | Multivariate logistic regression | |||
|---|---|---|---|---|---|---|
OR (95% CI) | p | OR (95% CI) | P | |||
Virus Group (cf none detected) | None | 20 of 95 (21.1%) | 1.00 (def) | - | 1.00 (def) | - |
Picornavirus | 10 of 40 (25.0%) | 1.25 (0.524, 2.98) | 0.615 | 0.996 (0.398, 2.49) | 0.994 | |
Influenza | 5 of 17 (29.4%) | 1.56 (0.493, 4.95) | 0.448 | 1.87 (0.552, 6.36) | 0.314 | |
Coronavirus | 3 of 6 (50.0%) | 3.75 (0.703, 20.0) | 0.122 | 2.43 (0.409, 14.4) | 0.330 | |
Other | 0 of 8 (0.00%) | - | - | - | - | |
Sex (cf male) | Male | 9 of 69 (13.0%) | 1.00 (def) | - | 1.00 (def) | - |
Female | 30 of 108 (27.8%) | 2.56 (1.13, 5.81) | 0.024 | 2.45 (1.01, 5.93) | 0.047 | |
Smoking (cf not current smoker) | Not current smoker | 36 of 161 (22.4%) | 1.00 (def) | - | 1.00 (def) | - |
Current smoker | 3 of 12 (25.0%) | 1.16 (0.298, 4.50) | 0.833 | 1.40 (0.319, 6.12) | 0.658 | |
Age (cf 18–24 years) | 18-24 years | 9 of 47 (19.2%) | 1.00 (def) | - | Not included | - |
25-34 years | 5 of 28 (17.9%) | 0.918 (0.274, 3.08) | 0.890 | Not included | - | |
35-44 years | 15 of 37 (40.5%) | 2.88 (1.08, 7.66) | 0.034 | Not included | - | |
45-54 years | 6 of 36 (16.7%) | 0.844 (0.270, 2.64) | 0.771 | Not included | - | |
55-64 years | 4 of 29 (13.8%) | 0.676 (0.188, 2.43) | 0.549 | Not included | - | |
Household size (cf size 2) | 2 | 14 of 64 (21.9%) | 1.00 (def) | - | Not included | - |
3 | 4 of 44 (9.09%) | 0.357 (0.109, 1.17) | 0.089 | Not included | - | |
4 | 11 of 46 (23.9%) | 1.22 (0.456, 2.76) | 0.801 | Not included | - | |
5 | 8 of 17 (47.1%) | 3.17 (1.03, 9.75) | 0.044 | Not included | - | |
6 | 2 of 3 (66.7%) | 7.14 (0.602, 84.7) | 0.119 | Not included | - | |
7 | 0 of 3 (0.00%) | - | - | Not included | - | |
Presence of child (cf no children in house) | No child in house | 22 of 123 (17.9%) | 1.00 (def) | - | 1.00 (def) | - |
At least one child in house | 17 of 54 (31.5%) | 2.11 (1.01, 4.41) | 0.047 | 2.63 (1.18, 5.88) | 0.018 | |