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Contemporaneous environmental and standing stocks data were not always available; therefore, mean and standard deviation (S.D). of the predictors were calculated for the longest time periods possible.
Odds ratios (ORs) and 95% confidence intervals (CIs) for the predictors were calculated.
Mortality and its predictors were calculated for the whole series, to achieve maximal statistical power.
Likelihood Ratios (LR) of significant predictors were calculated based on univariate data (4 × 4 tables).
The sensitivity, specificity and predictive power of these candidate predictors were calculated in association with adverse outcome.
Similarly, country-specific predictors were calculated as the mean of sex-specific and year-specific data because the correlations were also high (r > 0.96).
Similar(51)
The relationship between the cumulative probability of OS and DFS, as well as analyzed predictors, was calculated with the Kaplan-Meier method [25], while significant differences between curves were evaluated with Mantel's log-rank test [26].
Finally, the performance of multivariate PLS regression coefficients, in selecting relevant predictors, was calculated by means of a ROC analysis.
Taking into account the way regression coefficients in a multiple regression model with two predictors are calculated, it is easy to show that the parameters in the means models should generally also differ across zygosity.
The magnitude of the statistically significant dichotomous predictors was calculated as an average marginal effect, indicating the change in probability of receiving a colonoscopy if every study participant first had the reference value of an independent variable and then changed to the indicator value.
The weights of evidence (w+ i ) for each predictor were calculated by summing the model AIC c weights (w i ) over all models in which each term appeared.
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CEO of Professional Science Editing for Scientists @ prosciediting.com