Table 2.
The final output of multiple regression analysis with IST as the dependent variable after the stepwise variable selection procedure
| Predictors* | β estimate | Standardized β | Standard error | t-value | p-value |
|---|---|---|---|---|---|
| Age | 1.63 | 0.354 | 0.59 | 2.76 | 0.008 |
| Gender | -33.65 | -0.337 | 14.03 | -2.40 | 0.020 |
| Thiopental dose per weight (mg/kg) | 27.35 | 0.291 | 11.53 | 2.37 | 0.021 |
| Overall F-statistic: 4.81 (3,52) | p=0.005 | R2=0.217 | Adjusted R2=0.172 | ||
*
these predictors were selected as the most parsimonious set of influential predictors for predicting IST. The most optimal model was chosen based on AIC. All predictors contained in the model significantly predicted IST values at p-values <0.05. The model explained 21.7% of the total variance.
IST: initial seizure threshold, AIC: Akaike’s Information Criteria