Education Life reports that a sex survey of 1,000 Northern Illinois University students asked them to rate 11 sex acts as either "abstinent" or "not abstinent." Ten percent of them rated anal intercourse as abstinent behavior. More than 25 percent put oral-anal contact in the abstinent category. A third of the respondents classified oral-genital sex as abstinent. Six percent said that vaginal intercourse was also abstinent.

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