[R] Dependent Variable in Logistic Regression

Paul Bernal
2020-08-01T18:04:17Z

Hi Bert,

Thank you for the kind reply.

But what if I don't turn the variable into a factor. Let's say that in
excel I just coded the variable as 1s and 0s and just imported the dataset
into R and fitted the logistic regression without turning any categorical
variable or dummy variable into a factor?

Does R requires every dummy variable to be treated as a factor?

Best regards,

Paul

El s?b., 1 de agosto de 2020 12:59 p. m., Bert Gunter <
bgunter.4567 at gmail.com> escribi?:

> x <- factor(0:1)
> x <- factor("yes","no")
>
> will produce identical results up to labeling.
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip
)
>
>
> On Sat, Aug 1, 2020 at 10:40 AM Paul Bernal <paulbernal07 at
gmail.com>
> wrote:
>
>> Dear friends,
>>
>> Hope you are doing great. I want to fit a logistic regression in R,
where
>> the dependent variable is the covid status (I used 1 for covid
positives,
>> and 0 for covid negatives), but when I ran the glm, R complains that I
>> should make the dependent variable a factor.
>>
>> What would be more advisable, to keep the dependent variable with 1s
and
>> 0s, or code it as yes/no and then make it a factor?
>>
>> Any guidance will be greatly appreciated,
>>
>> Best regards,
>>
>> Paul
>>
>>         [[alternative HTML version deleted]]
>>
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