No, not at this point, and whether it's a lack of statistical power or if it's a true absence of a relationship is unclear at this point. As I said in my opening statement, you have to understand that “deployment” is a broad term.
You can have two individuals with the same military occupation code technically doing the same job in the same location on the same deployment who have entirely different experiences, or when they come back, one is scarred, and one is not. Deployment is an easy way of classifying things to look at relationships, but it's a very, very complicated concept, really, to be able to parse statistically.