Unlike previous studies, it uses the same sample for two models that are specified to test the relationship separately for weekday and weekend travel.
For each outcome, three models are specified to test the robustness of the results to different functional forms of f (Z i ) : a simple linear specification, a linear interaction specification and a quadratic linear specification.
The models for reproductive success were specified to test the following hypotheses.
Simplex models were specified to test whether the genetic and environmental influences on AAD symptoms showed qualitative or quantitative change.
As a sensitivity analysis, a linear model with interaction variables of key clinical markers was specified to test for statistical prediction power of the utility difference.
Then, 4 separate models were specified to test whether each set of psychological variables (from each theoretical framework) was associated with disability and to identify, within each framework, which variables were independently associated with disability.
For each difference-score outcome, a series of ANOVA models was specified to test for main treatment effects both in the absence of and with covariates, main effects of treatment and predictors, and interactions between intervention group and baseline demographic variables, disease status variables, and baseline value of outcome.
Note too that in the random effects model, where country-level variables are included (model 2), the association remains the same, strengthening the belief that the random effects models are correctly specified to test the potential of interaction effects.
From the 186 tests evaluated, only 60 (32.4%) were specified to be commercially available.
This high level of integration permits data acquisition systems to be specified and tested as a single complex function.
