Difference in Relative Risk

[Huberth]

Hi
I have a doubt with de Relative Risk, using Independent Samples (contingency tables). I was doing a homework and a I found that if a do it manually y got a different result from jamovi. I did a screenshot trying to be explanatory. Can someone tell me why this happed or I'm doing something wrong.

Thanks for any help

[jonathon]

hey,

so these are the calcs we use here:

https://github.com/jamovi/jmv/blob/mast ... #L536-L549

let us know if you still think there's an issue.

kind regards

jonathon

[MAgojam]

Can someone tell me why this happed or I'm doing something wrong.

HI, @Huberth.

The manual calculation of your RR is correct, but jamovi also correctly calculates RR.
Because RR in jamovi, corresponds to yours, it is necessary that in the first cell (A) the combination of the cases encoded with 1 for rows (fum_cod) is shown with the cases coded with 1 for columns (BP_cod).

screenshot.png (133.1 KiB) Viewed 3302 times

From the ribbon Data-> Setup-> Data Variable:
Retrieve your fum_cod variable, in the Levels list select encoding 1 (second line) and with the up arrow move it over (do the same thing with BP_cod).
It's about your output ...

Cheers,
Maurizio

[Huberth]

[quote="jonathon"]hey,

so these are the calcs we use here:

https://github.com/jamovi/jmv/blob/mast ... #L536-L549



Thank you very much, the formula is ok, its interesting to see the program part of the software

regards

Huberth

[Huberth]

Can someone tell me why this happed or I'm doing something wrong.

HI, @Huberth.

The manual calculation of your RR is correct, but jamovi also correctly calculates RR.
Because RR in jamovi, corresponds to yours, it is necessary that in the first cell (A) the combination of the cases encoded with 1 for rows (fum_cod) is shown with the cases coded with 1 for columns (BP_cod).

Cheers,
Maurizio

Thanks Maurizio it was very helpful

regards

Huberth