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Therefore, where possible, our sample's data will be compared to the two major studies mentioned earlier, the NHSLS and the NCHRBS. The advantage of this is that they have fairly large samples; however, the disadvantage is that both of these are over a decade old.
The NCHRBS reports that 86.1% of college students had sexual intercourse in their lifetime (females 87.8% and males 84.0%).
This is considerably higher than found in the NCHRBS (22%) (Douglas et al., 1997).
This is considerably higher than the 35% reported by the NCHRBS (Douglas et al., 1997) and the heavy frequent drinking (16%) and heavy infrequent drinking (12%) reported by the Canadian Campus Survey 2004 (Adlaf et al., 2005).
Data from the NCHRBS supported this assumption and revealed that 35.1% of the respondents reported they had been pregnant or gotten someone pregnant (CDC, 1997).
Upon the approval of the Virginia Tech and James Madison University Institutional Review Board, the National College Health Risk Behavior Survey (NCHRBS) (Douglas et al., 1997), was administered once at the beginning of the Fall 2003 semester to acquire baseline data and a second time at the end of the Fall 2003 semester to acquire health behavior data once the students were about to complete the personal health course.
Overall, 891 students voluntarily completed the pre NCHRBS and the self-efficacy surveys (VT: n = 622; JMU: n = 269) and 829 students completed the post NCHRBS (VT: n = 593; JMU: n = 236).
While underage participants in this study account for only 17% of the total population, 28% of them reported heavy episodic drinking, in comparison to 45.6% of underage students who participated in the CORE study (Presley, Meilman, & Leichliter, 2002), 40% of the underage students enrolled in the MFT study, and 42% of underage students who participated in the NCHRBS (Centers for Disease Control and Prevention, 1997).
The instrument, an adaptation of the Centers for Disease Control and Prevention National College Health Risk Behavior Survey (NCHRBS) (CDC, 1997), was comprised of 83 items requesting information about a variety of health behaviors including self-reported weekly physical activities, dietary habits, and demographic information.
Vigorous activity was defined as activity engaged in for 20 minutes or more that "made you sweat or breathe hard." Moderate activity was defined as "walking or bicycling for at least 30 minutes at a time." These items were the exact questions as they appeared on the NCHRBS.
Drug and alcohol items of the NCHRBS were utilized for this study.
For data collection, the NCHRBS used a questionnaire mailed to each of the selected students.
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