Question regarding data type of BMI

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kinmin
Posts: 2
Joined: Tue Dec 29, 2015 4:55 pm

Question regarding data type of BMI

Postby kinmin » Tue Dec 29, 2015 5:04 pm

Hi all,

Perhaps a quick and simple question.

If you have BMI scores in a data set, are they considered continuous/scale?

I have seen BMI given as an example of categorical/ordinal data in textbooks, but it would seem to me that it can only be considered categorical/ordinal once a new variable has been computed from this with values for the categories (i.e. 0: </= 18.4, 1: 18.5-24.9, 2: 25.0-29.9 ...) - is this correct? Should I therefore be treating BMI as continuous data unless it has been transformed into a new categorical variable as described above?

Any help would be great.
kea1011
Posts: 12
Joined: Sun Nov 03, 2013 5:11 pm

Re: Question regarding data type of BMI

Postby kea1011 » Tue Jan 05, 2016 4:03 am

hello, i wonder if you ever received your answer?
trust me, im no stats-wiz. but it appears to me you have it correct. BMI is continuous. sounds like a researcher created those categories. sort of like creating age groups. some people prefer to work with the continuous, others not. sometimes it's more easily interpreted/presented.
-kea
kinmin
Posts: 2
Joined: Tue Dec 29, 2015 4:55 pm

Re: Question regarding data type of BMI

Postby kinmin » Tue Jan 05, 2016 9:59 am

Hello - that seems to make sense, thanks for the second opinion!

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