I would need help in order to perform a proportion comparison between 4 different modalities of one factor.
Here is an example.
I would like to compare the proportion of mother-to-child smoking between individuals from 4 different countries.
Contry USA INDIA CHINA ITALIA Mother 100 2000 1600 200 Child 25 860 64 10 % 25% 43% 4% 5%
So what I would like to compare is then the percentage of smoking child between countries I firts tought to chi2 test of fit to a uniform distribution law such as:
USA INDIA CHINA ITALIA observed 25% 43% 4% 5% expected 25% 25% 25% 25%
But I know chi2 does work only on numbers and not on proportions, right ?
Does someone have an idea of a test to support that
INDIA have a significantly higher level of smoking childs regarding their mothers compared to
ITALIA compared to what is expected if it were homogeneous ?
Thanks a lot for you help and time
Note: keep in mind that it is just a toy data, meaningless without any biological sens, I just want to put a sample example where I would like to compare proportions.