hi Josep,

these two might help with the interpretation

http://www.sthda.com/english/wiki/multiple-correspondence-analysis-essentials-interpretation-and-application-to-investigate-the-associations-between-categories-of-multiple-qualitative-variables-r-software-and-data-mining

https://groups.google.com/forum/#!topic/factominer-users/55w8gvADWJo

cheers, Kostas

Hi Josep, 

I use SPAD to perform the MCA and i only look to the contributions that have more than value-test higher than 2.0.

Best regards

I found this which explains everything .. in French: http://www.deenov.com/Data/Sites/1/docs/Valeur-Test-critere-de-caracterisation-statistique.pdf

BTW you're supposed to look at c.test only for supplementary variables.