According to the study, which is an analysis of nearly 43,000 interviews conducted in recent years by the Ventura, Calif.-based organization, more than 70 percent of American adults describe themselves as Christians. Only 63 percent of people rank "low" on the Barna Group's post-Christian scale, however, while 28 percent are considered "moderately" post-Christian and nine percent are considered "highly" post-Christian. ...