I know how to use the online tools that will show me the codon usage for my particular organism overall, and for any particular gene. I'd like to determine, in some meaningful & convincing way, whether the usage is different in my gene (or a part of my gene encoding some domain) than from the genome in general. Is there a statistical way to analyze the codon usage tables one can generate? How do people demonstrate, or test whether, their gene's codon usage is different from the rest of the genome? I'm working with bacteria.