Economic Insecurity and Husband-to-Wife Physical Assault in Hong Kong: The Role of Husband’s Power Motive

Intimate partner violence, which describes physical or sexual assault, or both, of a spouse or sexual intimate, is a common health-care issue. In this article, I have reviewed research on the mental and physical health sequelae of such violence. Increased health problems such as injury, chronic pain, gastrointestinal, and gynaecological signs including sexually-transmitted diseases, depression, and post-traumatic stress disorder are well documented by controlled research in abused women in various settings. Intimate partner violence has been noted in 3-13% of pregnancies in many studies from around the world, and is associated with detrimental outcomes to mothers and infants. I recommend increased assessment and interventions for intimate partner violence in health-care settings.

A Monte Carlo study compared 14 methods to test the statistical significance of the intervening variable effect. An intervening variable (mediator) transmits the effect of an independent variable to a dependent variable. The commonly used R. M. Baron and D. A. Kenny (1986) approach has low statistical power. Two methods based on the distribution of the product and 2 difference-in-coefficients methods have the most accurate Type I error rates and greatest statistical power except in 1 important case in which Type I error rates are too high. The best balance of Type I error and statistical power across all cases is the test of the joint significance of the two effects comprising the intervening variable effect.