MCA: Stata module to perform multiple correspondence analysis
Philippe Van Kerm
The command mca produces numerical results as well as graphical representations for multiple correspondence analyses (MCA). mca actually conducts an adjusted simple correspondence analysis on the Burt matrix constructed with varlist (i.e. matrix of frequency counts resulting from all two-way cross-tabulations of the variables in varlist including the cross-tabulations of each variable with itself). It can be shown that the total inertia of the Burt matrix is high due to the fitting of the diagonal sub-matrices. Consequently, a simple correspondence analysis applied to this matrix usually results in maps of apparently poor quality. As a remedy, if not otherwise specified (see Options), mca adjusts the obtained principal inertias (eigenvalues) following a method suggested by Benzecri and presented in Greenacre (1984).
In order to set up a list of libraries that you have access to,
you must first login
or sign up.
Then set up a personal list of libraries from your profile page by
clicking on your user name at the top right of any screen.