Volume 9, Number 1—January 2003
Research
Highly Endemic, Waterborne Toxoplasmosis in North Rio de Janeiro State, Brazil
Lílian Maria Garcia Bahia-Oliveira*, Jeffrey L. Jones†
, Juliana Azevedo-Silva*, Cristiane C.F. Alves*, Fernando Oréfice‡, and David G. Addiss†
, Juliana Azevedo-Silva*, Cristiane C.F. Alves*, Fernando Oréfice‡, and David G. Addiss†Table 2
Risk for Toxoplasma gondii seropositivity shown as odds ratios estimated with backward elimination logistic regression for all the three socioeconomic populations combined.a
| Wald confidence limits |
|||||
|---|---|---|---|---|---|
| Variable | Odds ratio | Lower | Upper | p value | |
| Age (yrs) | |||||
| 0–9 | Ref.b | ||||
| 0–14 | 1.75 | 1.15 | 2.68 | 0.001c | |
| 15–19 | 2.84 | 1.75 | 4.63 | <0.001c | |
| 20–29 | 4.36 | 2.52 | 7.55 | <0.001c | |
| 30–39 | 8.84 | 4.30 | 18.20 | <0.001c | |
| 40–49 | 10.81 | 5.18 | 22.56 | <0.001c | |
| 50+ | 8.45 | 3.75 | 19.00 | <0.001cc | |
| Socioeconomic population | |||||
| Lower | Ref. | ||||
| Middle | 0.48 | 0.32 | 0.72 | <0.001c | |
| Upper | 0.14 | 0.08 | 0.24 | <0.001c | |
| Location | |||||
| Urban | Ref | ||||
| Suburban | 1.56 | 1.07 | 2.28 | 0.022 | |
| Other Factors (ref. is absence of factor) | |||||
| Unfiltered water | 1.23 | 0.97 | 1.74 | 0.081 | |
| Lake, river, or stream water | 1.63 | 1.16 | 2.29 | 0.005c | |
| Faucet water | 1.54 | 1.17 | 2.03 | 0.002c | |
| Kibbeh | 0.69 | 0.50 | 0.96 | 0.027 | |
| Ice cream (in plastic pop-up bags) | 1.32 | 1.01 | 1.73 | 0.046 | |
| Attend home shows | 0.75 | 0.57 | 0.99 | 0.039 | |
| Eat in restaurants | 0.69 | 0.52 | 0.92 | 0.011c | |
| Region 1 (compared with other regions) | 0.74 | 0.56 | 0.98 | 0.037 | |
aAll variables remaining in the model are shown.
bRef., referent.
cStatistically significant (p<0.01, rounded).
