3.3. Reflex Action Mortality Predictors
Logistic regression model selection and drop-in deviance tests determined that the most parsimonious model for Tanner crab from the Discard-mortality study included only Score as a predictor (Table 2). This indicates a relationship between Score and probability of mortality where each one unit increase in Score is associated with an increase in the odds of mortality (the ratio of the probability of mortality to the probability of survival) by 2.26 (95% Confidence Interval 1.80–2.83, logistic regression; Table 2). There was not convincing evidence that, after accounting for Score, binned or continuous width significantly improved model fit (p-values 0.05 and 0.24, respectively, drop-in deviance tests).