These variables are equivalent to an interaction between 'month' and each tax indicator variable.
The model included education of each of the spouses, interaction between them, the indicator variable coding the difference between both surveys and the interaction between education and the indicator variable.
Additionally, the models include an interaction term between the indicator variable and the number of stars received, if any, and include an indicator variable that equals one if the wine received the Coup de Coeur.
The interaction term between the indicator variable denoting the center of enrollment and eGFR was not significant at any percentile of the outcome variable.
Model II was used for the comparison of the differences in valuation scores of non-severe health states and severe health states by including an interaction term between the indicator variable for severe health state (versus non-severe health state) and the indicator variable for the specific CDP group (versus the NCDP group).
The immediate effect of smoke-free legislation was modelled as a step function (step change), including a binary indicator variable which takes a value of 1 when the ban is present and 0 otherwise, while the gradual effects were studied with an interaction term between the indicator variable and time (trend or slope change).
Pearson correlations between each gene and an indicator variable for each cluster were computed to find those genes with significantly higher or lower expression within one group as compared to all other tumors, and the Bonferonni method was used to conservatively adjust the p-values for multiple comparisons.
To identify non-adjacent dependencies between the consensus indicator variable, C i, and the nucleotides in position X j, the χ2 value was calculated for C i vs. X j, for all pairs of i, j such that i ≠ j.
Because our design is a partial factorial design we are not able to run the full model including an interaction between cumulative dose and an indicator variable for each number of doses given.
Surrogacy is a relation between a "surrogate" or "indicator" variable and a "target" or "objective" variable.[39] The surrogate variable represents the objective variable in the sense that it stands in for the latter in the analyses that form part of conservation planning (that is, the former replaces the latter in these analyses).
