In Simbiology, should the categorical variables be assigned as group variable or covariate in the dataset?

Question

Praveen Kumar M 2019-6-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/467496-in-simbiology-should-the-categorical-variables-be-assigned-as-group-variable-or-covariate-in-the-da

评论： Praveen Kumar M 2019-6-17

I am using Simbiology for population pharmacokinetic model development. I use non-linear mixed effect modelling approach. I have a doubt in the intial assignment of data type in the dataset.

Suppose I have age and gender in the dataset. Clearly, I will assign age as covariate. Now gender is also a covariate. But there is a option in the dataset type which is group variable.

Now I am confused on whether I should assign gender as covariate or group variable.?

I am attaching a screenshot for the reference.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Jeremy Huard 2019-6-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/467496-in-simbiology-should-the-categorical-variables-be-assigned-as-group-variable-or-covariate-in-the-da#answer_379538

Group variable defines an index for a subject/experiment. In your dataset, ID is a group variable. Gender and age can be both covariates.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Praveen Kumar M 2019-6-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/467496-in-simbiology-should-the-categorical-variables-be-assigned-as-group-variable-or-covariate-in-the-da#answer_379541

Oh. That's a clear answer. I have a logical query. Among the covariate, one is a categorical variable (gender) and another is a continuous variable (age). How do I incorporate this information in the dataset / modelling?

2 个评论
显示无隐藏无

Jeremy Huard 2019-6-17

It is not necessary to define it as categorical. But covariates require numerical data in SimBiology. In your case, since you have a binary covariate, you could set gender to 1 for female, 0 for male.

Praveen Kumar M 2019-6-17