Firearms
A study of the Danger Assessment tool revealed that women who were threatened or assaulted with a gun or other weapon were twenty (20) times more likely than other women to be murdered (Campbell et al., 2003b). In an earlier study, Saltzman et al. (1992) found that "Family and intimate assaults involving firearms are twelve (12) times more likely to result in death than non-firearm-related assaults."
Strangulation
The Family Justice Center Alliance provides training on the handling of strangulation cases for domestic violence and sexual assault professionals, and offer a training DVD entitled Strangulation: What We Have Learned that features national experts on the subject of strangulation from detection through prosecution of strangulation cases.