Sentence examples for category of the third variable from inspiring English sources
However coplots represent a qualitative way to visualize statistically significant interactions; divisions of the data into different categories are performed mathematically so that there is the same number of data points in each category of the third variable.
Most studies to date have concentrated on evaluating whether the relative risk associated with the main exposure of interest is constant across categories of the third variable, that is, under the assumption of multiplicative interaction (Rothman and Greenland 1998).
We tested linear trends by modeling ordinal versions of the three dose response variables coded as the number of inversion days for the first variable and by using category medians for the day of inversion and inversion length variables.
Hence, the first (0 %) category of the dependent variable comprises the complete group of CONV investors, the second category the group of current SR investors with an amount of 1 20 % of their investment portfolio devoted to SR funds, and the third (21 80 %) and fourth (81 100 %) category comprise current SR investors with accordingly stronger SR fund involvements.
In calculating the odds ratio for each category of the independent variables, the first group was always taken as the reference category.
The unexposed category consisted of the intersection of the unexposed categories of the three variables; the high-exposure category in the intersection of the high-exposure categories of the first two variables and the high- or intermediate-exposure category of the last variable.
Each category of the predictor variable was then compared with the reference category for categorical variables.
Ref refers to the reference category of the predictor variable.
The MOR was calculated for each category of the outcome variable compared with the reference category.
The mutually exclusive patterns of non- and partial response identified in the first step were the other categories of the nominal variable.
The first category of each independent variable is taken as the reference category (and given an OR of 1.00) and the effect of the other categories on extramarital sex is compared with this reference category.
