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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Ann Emerg Med. 2015 Nov 14;67(2):263–275. doi: 10.1016/j.annemergmed.2015.09.021

Table 2.

Mean alcohol use variables over time


Outcome		 Baseline
Mean* (95% CI)
(n1=279)
(n2=270)		 4-months
Mean* (95% CI)
(n1=247)
(n2 = 238)		 8-months
Mean* (95% CI)
(n1=236)
(n2 = 220)		 12-months
Mean* (95% CI)
(n1=230)
(n2= 211)
Alcohol
Most number of
drinks in past 30
days		 HS: 8.03
(95%CI:7.29,8.77)
TBMI: 8.30
(95%CI:7.49,9.11)
Difference: −0.27
(95%CI:−1.38,0.83)		 HS: 5.63
(95%CI:4.88,6.38)
TBMI: 6.61
(95%CI:5.99,7.23)
Difference: −0.98
(95%CI:−1.95, −0.01)		 HS: 5.37
(95%CI:4.72,6.02)
TBMI: 6.04
(95%CI:5.38,6.70)
Difference: −0.67
(95%CI: −1.60,0.26)		 HS: 5.94
(95%CI:5.20–6.68)
TBMI: 7.05
(95%CI:6.18–7.92)
Difference: −1.11
(95%CI:−2.25,0.03)
Typical number of
drinks in past 30
days		 HS: 5.04
(95%CI:4.54,5.54)
TBMI: 5.48
(95%CI:4.86, 6.09)
Difference: −0.44
(95%CI: −1.22,0.35)		 HS: 3.37
(95%CI:3.91,3.83)
TBMI: 3.34
(95%CI:2.92, 3.76)
Difference: 0.03
(95%CI: −0.59,0.66)		 HS: 3.05
(95%CI:2.60,3.49,)
TBMI: 3.79
(95%CI:3.09,4.78)
Difference: −0.74
(95%CI:−1.54,0.07)		 HS: 3.20
(95%CI:2.82,3.58)
TBMI: 3.62
(95%CI:3.10,4.1312.58)
Difference: −0.42
(95%CI:−1.05,0.22)
How many days
drink 4 or more
(female) or 5 or
more (male), in past
30 days		 HS: 7.09
(95%CI:6.13–8.05)
TBMI: 6.40
(95%CI:5.53–7.27)
Difference: 0.69
(95%CI:−0.62,1.99)		 HS: 3.77
(95%CI:3.06–4.48)
TBMI: 3.89
(95%CI:3.15–4.63)
Difference: −0.12
(95%CI: −1.15,0.91)		 HS: 3.86
(95%CI:3.15–4.57)
TBMI: 3.59
(95%CI:2.86−4.32)
Difference: 0.27
(95%CI: −0.75,1.30)		 HS: 4.35
(95%CI:3.48–5.22)
TBMI: 4.76
(95%CI:3.81–5.71) Difference: −0.41
(95%CI:−1.70,0.88)

Unadjusted mean scores n1 = home safety group (HS); n2 = telephone brief motivational interview group (TBMI)