Maternal age was grouped as <20 years, 20 24 years, 25 29 years, 30 34 years, 35 39 years and 40+ years for descriptive tables and modelled as a continuous variable for regression modelling.
19 The primary method for testing for an independent effect of radiation on the risk of each stroke subtype is based on Cox proportional hazards regression models where radiation dose is modelled as a continuous predictor variable.
The lattice shell is composed of a large number of helical and hoop ribs and modelled as a continuous orthotropic thin cylinder with effective stiffness parameters.
The first approach involves fitting a single statistical model where the apparent resistivity for each frequency/altitude combination is given an overall mean modelled as a continuous time random walk (a Weiner Process, e.g. [14]) in distance, together with a random effect for replicate.
Population immunity was modelled as a continuous variable.
The associations between birth weight, modelled as a continuous variable, and components of physical activity (cpm, time spent in MVPA) and sedentary time were estimated by multiple linear regression analysis separately within each study.
Bed size was modelled as a continuous variable.
IGF-I/IGFBP-3 molar ratio was modelled as a continuous linear variable.
Aurora kinase A was one of the proliferation markers, best modelled as a continuous variable.
In the longitudinal fixed effects regression analysis, this was modelled as a continuous variable (0 to 8).
