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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†Comments to Author , Juliana Azevedo-Silva*, Cristiane C.F. Alves*, Fernando Oréfice‡, and David G. Addiss†
Author affiliations: *Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro, Brazil; †Centers for Disease Control and Prevention, Atlanta , Georgia, USA; ‡Escola de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil

Main Article

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).

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