The study, by Baylor University researchers, found that the problem is so pervasive that it almost certainly involves a wide range of denominations, religious traditions and leaders.

“It certainly is prevalent, and clearly the problem is more than simply a few charismatic leaders preying on vulnerable followers,” said Diana Garland, dean of Baylor’s School of Social Work, who co-authored the study.

It found that more than two-thirds of the offenders were married to someone else at the time of the advance.