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Alcohol and Drug Use among CU-Boulder Undergraduates
Results of the College Alcohol Study Surveys
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Results
Results are presented below from each of the College Alcohol Study (CAS) surveys conducted on the Boulder campus
by the Harvard School of Public Health;
for comparison,
the averages from the large public universities who participated in the four large-scale CAS national surveys
between 1993 and 2001 are also shown in the far right-hand columns.
The column for which the most recent year of survey data were collected is highlighted.
UCB data have been weighted to account for changing demographics of survey respondents over time. This
allows valid comparisons of data across years, given reasonable response rates for those survey years.
The median response rate for the CAS surveys administered to CU-Boulder students between 1993 and 2005 was 58%. In comparison,
the response rate for 2004 was 33%. Due to the relatively low response rate for 2004, we report these data
in a separate table. It is important to use extreme caution when interpreting the 2004
results and in comparing them to results from previous years.
The Harvard School of Public Health has provided 95% confidence limits for the binge drinking rates.
For a difference in two rates to be statistically significant at the .05 level, the two confidence intervals
must not overlap. Even if the differences are significant, the response rate must be considered in
interpreting the data. Harvard encourages looking carefully at the demographic characteristics
to make sure they are representative of CU-Boulder's students.
Graphs of these results are also available.
For information on national trends, visit the CAS website at
www.hsph.harvard.edu/cas/.
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Alcohol and Drug Use Among CU-Boulder Undergraduates1
Harvard School of Public Health College Alcohol Survey: 1993, 1997-2002, 2005
Weighted Dataa
| |
CU 1993 N=151
RR=75% |
CU 1997 N=433
RR=68% |
CU 1998 N=399
RR=64% |
CU 1999 N=382
RR=63% |
CU 2000 N=383
RR=58% |
CU 2001 N=307
RR=54% |
CU 2002 N=352
RR=47% |
CU 2005 N=269
RR=55% |
Large2 Public Univs 1993 |
Large Public Univs 1997 |
Large Public Univs 1999 |
Large Public Univs 2001 |
| Alcohol and Drug Consumption by Students - % Who: |
|
|
|
|
|
|
|
|
|
|
|
|
| Binge drinking rate -- binged at least once in the
past two weeks |
58%
(50-66%) |
58%*
(53-63%) |
60%
(55-64%) |
63%*
(58-67%) |
57%
(52-62%) |
54%
(49-60%) |
67%
(61-72%) |
71%
(65-76%) |
50%
|
48%
|
50%
|
50%
|
In the past two weeks, binged ...
--1-2 times
--3 or more times |
32%
26% |
26%
33%* |
26%
34% |
28%
34%* |
24%
33% |
20%
34%* |
29%
38%* |
32%
39% |
27%
24% |
23%
25% |
23%
28% |
24%
26% |
| Drank, but did not binge |
34% |
34% |
31% |
29% |
33% |
37% |
26% |
22% |
37% |
37% |
34% |
34% |
| Consumed alcohol in the past year |
92% |
92%* |
90% |
92%* |
89% |
91%* |
92% |
93% |
88% |
85% |
84% |
84% |
| Drank on 10 or more occasions in the past 30 days |
28% |
28% |
33% |
29% |
30% |
33%* |
33%* |
25% |
20% |
24% |
24% |
25% |
| Usually binge when drinking |
37% |
42% |
45% |
45% |
44% |
46% |
48% |
56% |
44% |
45% |
50% |
45% |
| Were drunk 3 or more times in the past month |
26% |
38%* |
40% |
37% |
39% |
37% |
44% |
45% |
26% |
32% |
34% |
32% |
| Drove after drinking in the past 30 days |
30% |
33% |
34% |
35% |
32% |
31% |
37% |
35% |
30% |
34% |
33% |
33% |
| Drove after having 5 or more drinks in the past 30 days |
7% |
11% |
9% |
11% |
12% |
7% |
10% |
11% |
11% |
12% |
15% |
12% |
| Rode with driver who was high/drunk in the past 30 days |
27% |
31% |
32% |
29% |
33% |
27% |
34% |
29% |
22% |
26% |
27% |
26% |
| Drink to get drunk |
48% |
66%* |
71% |
63%* |
63% |
53% |
64% |
NA |
43% |
56% |
52% |
51% |
| Consider themselves problem drinkers |
0% |
0% |
0.5% |
0.3% |
0.3% |
0.7% |
0% |
0% |
0% |
0% |
0% |
0% |
| Ever thought they had a drinking problem |
8% |
12% |
11% |
17% |
14% |
18% |
16% |
16% |
12% |
9% |
13% |
12% |
| Smoked cigarettes in the past 30 days |
24% |
33% |
38% |
34% |
30% |
28% |
32% |
23% |
23% |
31% |
31% |
27% |
| Used marijuana in the past 30 days |
23% |
34%* |
33% |
33%* |
31% |
29%* |
29% |
33% |
14% |
18% |
17% |
18% |
| Used any illicit drug (including MJ) in the past 30 days |
24% |
38%* |
38% |
35%* |
35% |
32%* |
34%* |
39% |
16% |
19% |
18% |
21% |
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| High School and College Binge Drinking
Behavior - % Who: |
|
|
|
|
|
|
|
|
|
|
|
|
| Did not binge in high school or college |
33% |
32%* |
33% |
31%* |
34% |
39% |
28% |
22% |
41% |
44% |
43% |
44% |
| Did not binge in high school, but binged
in college |
24% |
25% |
24% |
26% |
24% |
20%* |
26% |
30% |
24% |
23% |
23% |
26% |
| Binged in high school, but did not binge
in college |
10% |
10% |
7% |
7% |
8% |
9% |
6% |
8% |
9% |
8% |
7% |
6% |
| Binged in high school and college |
34% |
33%* |
36% |
37%* |
33% |
32%* |
40% |
41% |
27% |
25% |
27% |
22% |
* = CU data substantially higher than Large Publics (1997, 1999, and 2001 comparisons)
RR = response rate; adjusted for undeliverable surveys
a Harvard uses two different weighting schemes. One of these is concerned with trends over time and is intended to reduce the likelihood
that year-to-year differences in statistics are a function of the demographic characteristics of the sample, rather than actual differences.
The other weighting scheme adjusts for differential sampling fractions across categories of sex, age and race/ethnicity.
1 Unless otherwise noted, these figures reflect students' experiences during the past year.
2 Large publics are public universities with enrollments larger than 10,000 students.
Secondary Effects of Alcohol Use Among CU-Boulder Undergraduate Students1
Harvard School of Public Health College Alcohol Survey: 1993, 1997-2002, 2005
Weighted Dataa
| |
CU 1993 N=151
RR=75% |
CU 1997 N=433
RR=68% |
CU 1998 N=399
RR=64% |
CU 1999 N=382
RR=63% |
CU 2000 N=383
RR=58% |
CU 2001 N=307
RR=54% |
CU 2002 N=352
RR=47% |
CU 2005
N=269
RR=55% |
Large2 Public Univs 1993 |
Large Public Univs 1997 |
Large Public Univs 1999 |
Large Public Univs 2001 |
% of Students Reporting Drinking has Caused
Them to: |
|
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|
|
|
|
|
|
|
|
|
|
| Have a hangover. |
68% |
76%* |
75% |
73%* |
73% |
70% |
74% |
82% |
62% |
65% |
66% |
65% |
| Miss a class. |
32% |
41% |
46% |
43%* |
39% |
36% |
48% |
43% |
31% |
36% |
35% |
34% |
| Get behind in school work. |
30% |
32%* |
37% |
33%* |
31% |
30%* |
38% |
32% |
23% |
26% |
27% |
24% |
| Do something they regret. |
33% |
46%* |
43% |
47%* |
44% |
41% |
45% |
52% |
35% |
39% |
40% |
38% |
| Forget where they were or what they did. |
27% |
30% |
38% |
38%* |
33% |
32% |
37% |
46% |
27% |
30% |
31% |
29% |
| Argue with friends. |
20% |
28% |
28% |
30% |
24% |
23% |
28% |
33% |
21% |
26% |
25% |
24% |
| Engage in unplanned sexual activity. |
19% |
32%* |
32% |
29% |
26% |
20% |
28% |
37% |
20% |
25% |
24% |
22% |
| Engage in unprotected sex. |
5% |
16% |
11% |
12% |
11% |
9% |
15% |
16% |
10% |
13% |
12% |
11% |
| Damage property. |
6% |
15% |
17% |
14% |
14% |
11% |
16% |
14% |
9% |
12% |
11% |
12% |
| Get into trouble with campus or local police. |
10% |
11%* |
8% |
10% |
8% |
9% |
13% |
11% |
4% |
7% |
6% |
8% |
| Get hurt or injured. |
11% |
17%* |
19% |
17% |
14% |
18% |
21% |
18% |
10% |
13% |
14% |
15% |
| Require medical treatment for alcohol overdose. |
0% |
0.5% |
0.7% |
0.6% |
0.5% |
0% |
0.7% |
0.3% |
0% |
1% |
1% |
1% |
| Had 5 or more alcohol-related problems
(excluding a hangover, but including driving after drinking). |
17% |
29% |
31% |
33%* |
25% |
25% |
30% |
34% |
19% |
24% |
23% |
23% |
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% of Students who have Experienced Problems Due to Other Students' Drinking: |
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|
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| Been insulted or humiliated. |
39% |
34% |
37% |
37% |
38% |
32% |
43% |
37% |
32% |
34% |
35% |
31% |
| Had a serious argument or quarrel. |
30% |
28% |
30% |
31% |
29% |
30% |
35% |
35% |
27% |
NA |
30% |
27% |
| Been pushed, hit or assaulted. |
16% |
15% |
18% |
16% |
12% |
15% |
20% |
24% |
14% |
14% |
14% |
13% |
| Had property damaged. |
20% |
23%* |
24% |
23%* |
21% |
25%* |
29% |
23% |
13% |
16% |
16% |
18% |
| Had to "babysit" a drunken student. |
51% |
56% |
63% |
58% |
60% |
57% |
69% |
69% |
50% |
56% |
58% |
57% |
| Had their studying or sleep interrupted. |
66% |
59% |
60% |
62%* |
58% |
62%* |
62% |
56% |
51% |
54% |
53% |
51% |
| Been the victim of an unwanted sexual
advance. |
31% |
28% |
32% |
31% |
31% |
26% |
34% |
28% |
23% |
26% |
27% |
25% |
| Been the victim of sexual assault or
date rape. |
2% |
2% |
3% |
1% |
2% |
3% |
3% |
2% |
2% |
2% |
2% |
2% |
* = CU data different from Large Publics (1997, 1999, and 2001 comparisons)
RR = response rate; adjusted for undeliverable surveys
a Harvard uses two different weighting schemes. One of these is concerned with trends over time and is intended to reduce the likelihood
that year-to-year differences in statistics are a function of the demographic characteristics of the sample, rather than actual differences.
The other weighting scheme adjusts for differential sampling fractions across categories of sex, age and race/ethnicity.
1 Unless otherwise noted, these figures reflect students’ experiences during the past year.
2 Large publics are public universities with enrollments larger than 10,000 students.
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College Alcohol Study Main Page
Updated February, 2006
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