The logistic regressions showed that, of the environmental predictors included in the model, only tidal conditions showed a statistically significant influence on the presence or absence of an exceedance (Table 1). Enterococci exceedance was 2.475 times more likely to occur at high tide versus low tide, and 1.252 times more likely at high tide versus slack tide.
Odds ratio estimates between tidal conditions as computed from logistic regression
Odds ratio estimates . | |||
---|---|---|---|
Effect . | Point estimate . | 95% Wald confidence limits . | |
Tidal Conditions 1 vs 3 | 2.475 | 1.661 | 3.687 |
Tidal Conditions 2 vs 3 | 1.252 | 0.866 | 1.811 |
Odds ratio estimates . | |||
---|---|---|---|
Effect . | Point estimate . | 95% Wald confidence limits . | |
Tidal Conditions 1 vs 3 | 2.475 | 1.661 | 3.687 |
Tidal Conditions 2 vs 3 | 1.252 | 0.866 | 1.811 |
Tidal conditions as reported by the Florida Department of Health are coded as 1 = High Tide, 2 = Slack Tide, and 3 = Low Tide.