Race and cheating on spouse

The National Couples Survey asked 593 people if they've slept with someone else since being married. Here are the percentages answering yes by race/ethnicity:

Percent
Whites 6.2
Blacks 17.8*
Hispanics 9.1
Asians 15.4
Amerindians 10.0

* p < .05, two-tail test, compared with whites.


Samples sizes for minority groups are small--only blacks have significantly higher rates. (I know that someone having multiple partners in an open marriage would be included with the cheaters, but this type of arrangement is rare, I think.)