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Table 2 Coefficients and goodness of fit of a logistic binary model predicting presence and absence of urinary schistosomiasis in different schools of Ogun State, on the basis of observed data of disease and environmental variables: Percentages of correct predictions.

From: Geographical information system and predictive risk maps of urinary schistosomiasis in Ogun State, Nigeria

Observed Urinary Schistosomiasis Predicted Urinary Schistosomiasis Correct prediction (%)
  Absent Present  
Infection Absent 0 136 0.0
Infection Present 0 553 100.0
Overall    79.7