Table 2: Univariate and multivariate analysis of the relative risk of astrovirus during a school outbreak.
|
Risk factors |
Exposed |
Unexposed |
Univariate analysis RR (95% CI) |
Multivariate analysis RR (95% CI) |
||||
|
total |
cases |
AR (%) |
total |
cases |
AR (%) |
|||
|
Contacting with school cases |
32 |
9 |
28.1 |
237 |
14 |
5.9 |
6.23 (2.43-15.97) |
3.95 (2.18-5.58) |
|
Touching direct drinking water faucet |
21 |
5 |
23.8 |
248 |
18 |
7.3 |
3.99 (1.31-12.15) |
4.18 (1.50-8.37) |
|
Having Breakfast from vendors |
128 |
16 |
12.5 |
141 |
7 |
5.0 |
2.74 (1.09-6.89) |
2.03 (0.81-4.58) |
|
Water from home |
189 |
12 |
6.3 |
80 |
11 |
13.8 |
0.43 (0.18-1.01) |
0.43 (0.16-1.11) |
|
Seeing vomits |
36 |
5 |
13.9 |
233 |
18 |
7.7 |
1.92 (0.67-5.56) |
|
|
Cleaning vomits |
4 |
1 |
25.0 |
264 |
21 |
8.0 |
3.86 (0.38-38.73) |
|
|
Went to toilet ≥ 3 |
74 |
10 |
13.5 |
192 |
13 |
6.8 |
2.15 (0.89-5.15) |
|
|
Washing hand thoroughly |
116 |
9 |
7.8 |
150 |
14 |
9.3 |
0.82 (0.34-1.96) |
|
|
Catching school bus |
47 |
3 |
6.4 |
221 |
20 |
9.0 |
0.69 (0.20-2.41) |
|