[R] I need to create new variables based on two numeric variables and one dichotomize conditional category variables.

[Md. Kamruzzaman]

Thanks Everyone,
My variables are in a dataframe with multiple other variables.

Thanks

-------------------------

*Md Kamruzzaman*


On Sat, Nov 4, 2023 at 1:13 AM Bert Gunter <bgunter.4567 using gmail.com> wrote:

> Well, something like:
>
> LAP <- ifelse(gender =='male', (WC-65)*TG, (WC-58)*TG)
>
> The exact code depends on whether your variables are in a data frame or
> list or whatever, which you failed to specify. If so, ?with  may be useful.
>
> Cheers,
> Bert
>
>
>
> On Fri, Nov 3, 2023 at 3:43 AM Md. Kamruzzaman <mkzaman.m using gmail.com>
> wrote:
>
>> Hello Everyone,
>> I have three variables: Waist circumference (WC), serum triglyceride (TG)
>> level and gender. Waist circumference and serum triglyceride is numeric
>> and
>> gender (male and female) is categorical. From these three variables, I
>> want
>> to calculate the "Lipid Accumulation Product (LAP) Index". The equation to
>> calculate LAP is different for male and females. I am giving both
>> equations
>> below.
>>
>> LAP for male = (WC-65)*TG
>> LAP for female = (WC-58)*TG
>>
>> My question is 'how can I calculate the LAP and create a single new
>> column?
>>
>> Your cooperation will be highly appreciated.
>>
>> Thanks in advance.
>>
>> With Regards
>>
>> *--------------------------------*
>>
>> *Md Kamruzzaman*
>>
>> *PhD **Research Fellow (**Medicine**)*
>> Discipline of Medicine and Centre of Research Excellence in Translating
>> Nutritional Science to Good Health
>> Adelaide Medical School | Faculty of Health and Medical Sciences
>> The University of Adelaide
>> Adelaide SA 5005
>>
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>>
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>

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