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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Addict Behav. 2015 Jun 25;50:192–198. doi: 10.1016/j.addbeh.2015.06.041

Table 3.

Mean measures related to alcohol use behaviors and alcohol use disorders, prevalence (%) of treatment at Wave 1, and recovery status at Wave 2 by pattern of polysubstance use among NESARC respondents with alcohol dependence at Wave 1

Wave 1 alcohol use and alcohol use
disorders		 Alcohol Use Only



(n = 351)		 Alcohol and Tobacco
Use


(n = 402)		 Alcohol, Tobacco, and
Cannabis Use


(n = 171)		 Alcohol, Tobacco,
Cannabis, Cocaine
and other Illicit
Drug Use illicit
drug(s)
(n = 248)		 P-value
Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI
Age when started drinking, not counting small tastes or sips 18.02,3,4 [17.6, 18.4] 16.71 [16.3, 17.2] 16.41 [15.9, 16.9] 16.31 [15.6, 17.1] <.0001
Age at onset of alcohol dependence 28.63,4 [27.0, 30.1] 27.43,4 [26.1, 28.6] 23.21,2 [21.7, 24.7] 22.41,2 [21.4, 23.4] <.0001
Duration (months) of longest/only episode of alcohol dependence 18.5 [12.3, 24.6] 20.2 [16.1, 24.4] 21.5 [13.6, 29.4] 24.0 [16.6, 31.4] 0.7020
# DSM-IV past-year alcohol dependence criteria 3.83,4 [3.7, 3.9] 3.94 [3.8, 4.1] 4.21 [4.0, 4.4] 4.51,2 [4.3, 4.7] <.0001
# DSM-IV past-year alcohol abuse criteria 0.73,4 [0.6, 0.8] 1.04 [0.8, 1.1] 1.31 [1.1, 1.6] 1.51,2 [1.3, 1.6] <.0001
# Days drank any alcohol in last 12 months 1412,3,4 [126, 157] 1871 [172, 201] 1831 [159, 206] 1801 [162, 198] 0.0005
# Days exceeding daily drinking limits in last 12 months 1002,3,4 [87, 113] 1481 [132, 165] 1471 [126, 168] 1421 [124, 160] <.0001
Usual number of drinks on days when drank alcohol 5.33,4 [4.7, 5.8] 6.3 [5.7, 6.9] 7.11 [6.1, 8.0] 7.61 [6.6, 8.5] 0.0004
Largest number of drinks on days when drank alcohol 10.42,3,4 [9.3, 11.4] 13.21 [12.0, 14.4] 14.01 [12.0, 16.1] 15.71 [14.1, 17.3] <.0001
Average daily volume of ethanol (fluid ounces) 1.92,3,4 [1.6, 2.2] 3.21 [2.8, 3.7] 3.41 [2.6, 4.2] 4.21 [3.0, 5.3] <.0001
Wave 1 past-year alcohol treatment and Wave 2 recovery status % 95% CI % 95% CI % 95% CI % 95% CI
Wave 1-Past-year treatment for alcohol problems 5.42,4 [3.1, 9.1] 13.01 [9.6, 17.4] 9.3 [5.4, 15.7] 17.71 [12.8, 23.9] 0.0038
Wave 2- Still alcohol dependent 27.84 [22.5, 33.8] 36.4 [31.0, 42.1] 39.9 [31.1, 49.5] 43.51 [35.9, 51.5] 0.0278
Wave 2- Partial remission 42.4 [36.4, 48.7] 40.6 [34.9, 46.6] 41.7 [32.6, 51.4] 34.8 [28.4, 41.7] 0.3855
Wave 2- Asymptomatic risk drinker 13.7 [9.6, 19.2] 11.5 [8.2, 15.8] 10.3 [6.1, 17.0] 14.4 [9.2, 21.6] 0.6810
Wave 2- Low-risk drinker 9.04 [6.1, 13.0] 6.0 [3.8, 9.5] 5.0 [2.6, 9.5] 2.51 [1.2, 5.4] 0.0292
Wave 2- Abstainer 7.1 [4.4, 11.4] 5.5 [3.5, 8.6] 3.1 [1.3, 6.9] 4.8 [2.5, 9.0] 0.3779

Note: The superscript i (i = 1, 2, 3, 4) indicates a significant pairwise comparison with the pattern i (Bonferroni adjusted p < 0.05).