. Author manuscript; available in PMC: 2013 Mar 1.

Published in final edited form as: Psychol Addict Behav. 2011 May 23;26(1):51–58. doi: 10.1037/a0023942

Table 1.

Drinking Characteristics by BAC Group

Characteristic	BAC Group
Characteristic	1	2	3
N (%)	70 (31.1%)	95 (42.2%)	60 (26.7%)
BrAC
Mean (SD)	0.05 (0.03)^b,^c	0.12 (0.02)^c	0.21 (0.05)^b,^c
Range	0.00 - 0.08	0.081 - 0.16	0.161+
eBAC
Mean (SD)	0.08 (0.06)^a	0.13 (0.07)^c	0.17 (0.11)^a,^c
Range	0.00 - 0.26	0.01 - 0.33	0.03 - 0.55
gBAC
Mean (SD)	0.07 (0.04)^a	0.10 (0.04)^a,^b	0.12 (0.06)^a,^b
Range	0.01 - 0.20	0.01 - 0.30	0.01 - 0.25
Mean BAC Misperception Score (SD)	-0.026 (0.05)^***	0.024 (0.05)^***	0.088 (0.08)^***
Pearson Correlation (r) of BAC Misperception with BrAC	0.38^**	0.40^**	0.59^**
Average Reported Standard Drinks at Baseline (SD)	4.12 (2.79)	6.77 (3.30)	8.62 (4.12)
Average Drinks per Month (SD)	46.12 (30.17)	66.78 (43.32)	88.59 (50.61)
Binge Episodes in Last Month (SD)	4.22 (3.87)	5.12 (4.32)	7.78 (4.82)

Note: BAC = blood alcohol concentration. BrAC = breath alcohol concentration. eBAC = estimated blood alcohol concentration. gBAC = guesstimated blood alcohol concentration.

BAC groups are defined by BrAC range: Group 1 = 0.00 – 0.08, Group 2 = 0.081 – 0.16, and Group 3 = 0.161 and above.

= significantly different from BrAC at p < 0.05 at least.

= significantly different from eBAC at p < 0.05 at least.

= significantly different from gBAC at p < 0.05 at least.

^**

= significant at the p < 0.01 level.

^***

= significant at the p < 0.001 level.