New life sciences research from University of California described.

According to a study from the United States, "We sought to determine whether groups traditionally most vulnerable to disasters would be more likely than would be others to perceive population level risk as high (as measured by the estimated color-coded alert level) would worry more about terrorism, and would avoid activities because of terrorism concerns. We conducted a random digit dial survey of the Los Angeles County population October 2004 through January 2005 in 6 languages."

"We asked respondents what color alert level the country was under, how often they worry about terrorist attacks, and how often they avoid activities because of terrorism. Multivariate regression …