Volume 10, Number 8—August 2004
Dispatch
Hantavirus Infection in Anajatuba, Maranhão, Brazil
Table 2
Adjusted analysis of risk factors for hantavirus infection in Anajatuba, Maranhão State, Brazil, 2000
Variables | PRR (95% CI)a | p | |
---|---|---|---|
First stepb |
|||
Illiterate |
0.001 |
||
No |
1 |
||
Yes |
2.49 (1.45–4.26) |
||
Farm worker |
0.025 |
||
No |
1 |
||
Yes |
2.44 (1.12–5.32) |
||
Living with a companion |
0.022 |
||
Yes |
1 |
||
No |
2.05 (1.10–3.80) |
||
Second stepc |
|||
Seeing rats in the field |
0.013 |
||
No |
1 |
||
Yes |
4.22 (1.36–13.11) |
||
Third stepd |
|||
Age group |
< 0.001 |
||
<18 y |
1 |
||
18–40 y |
3.65 (1.34–9.94) |
||
41–64 y |
9.56 (3.65–25.04) |
||
>65 y | 13.43 (4.86–37.10) |
aPRR, prevalence rate ratio; CI, confidence interval.
bAdjusted PRR of socioeconomic variables (block 1).
ePRR of behavioral variables (block 2), adjusted for statistically significant variables in the first step.
dPRR of demographic variables (block 3), adjusted for statistically significant variables in the second step.