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. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: Drug Alcohol Rev. 2020 Nov 13;40(4):647–657. doi: 10.1111/dar.13213

Table 1.

Frequency of Physical Context, Risky Activity Engagement, and Social Context for SAM Days and Alcohol Days by <21 and 21+ Years

Total Sample < 21 Years Old 21 Years and Older
SAM Days
(n = 217)
Alcohol Days
(n = 377)
SAM Days
(n = 118)
Alcohol Days
(n = 184)
SAM Days
(n = 99)
Alcohol Days
(n = 193)

Physical Context
 Home 76.5% 54.4% 75.4% 53.8% 77.8% 54.9%
 Work 0.9% 3.2% 1.7% 3.8% 0.0% 2.6%
 Friend’s house 56.2% 39.5% 58.5% 57.6% 53.5% 22.3%
 Restaurant 2.8% 6.4% 1.7% 1.6% 4.0% 10.9%
 Bar/club 24.4% 37.7% 14.4% 13.0% 36.4% 61.1%
 Car 4.2% 4.0% 1.7% 0.5% 7.1% 7.3%
 Outdoors 20.7% 13.8% 11.9% 14.7% 31.3% 13.0%
Risky Activity Engagement
 Pre-game 41.0% 37.7% 44.1% 38.6% 37.4% 36.8%
 Drinking games 20.3% 20.7% 21.2% 28.3% 19.2% 13.5%
Social Context
 Alone 13.4% 26.8% 14.4% 26.6% 12.1% 26.9%

Among Days Using with 1+ Other Person
SAM Days
(n = 188)
Alcohol Days
(n = 275)
SAM Days
(n = 101)
Alcohol Days
(n = 134)
SAM Days
(n = 87)
Alcohol Days
(n = 141)

M (SD)

 Number of people 6.16 (3.31) 6.47 (3.55) 7.07 (3.28) 6.74 (3.48) 5.11 (3.04) 6.21 (3.61)
 Others’ level of intoxication (0-100)a 54.06 (23.08) 48.74 (27.32) 58.77 (22.12) 51.32 (25.72) 48.60 (23.10) 46.27 (28.64)

Note.

a

Number of people and others’ level of intoxication were only assessed on days when individuals reported using substances with at least one other person.