. Author manuscript; available in PMC: 2020 Jun 1.

Published in final edited form as: Alcohol Clin Exp Res. 2019 May 21;43(6):1113–1125. doi: 10.1111/acer.14064

Table 1:

Characteristics of 6,731 participants of European descent more than 20 years old in the Collaborative Study of the Genetics of Alcoholism (COGA).

	Overall (n=6,731)
Female (%)
Born before 1930	17.6%
Born 1930–1949	41.7%
Born in 1950 – 1969	36.1%
Born in 1970 – now	4.6%
Age at last interview (mean (SD))	38.697 (14.189)
Family history positive^a (%) (N = 5,075)	71.1%
Number of interviews (mean (SD))	2.246 (1.528)
Alcohol use	89.9%
DSM-IV Alcohol dependence (DSM4AD)	33.8%
Age at onset of alcohol dependence (mean, SD)	33.3 (15.1)
Alcohol dependent with active AUD or high risk drinking	63.9%
Reduction/Cessation^b (N = 6,718)
Active DSM-5 AUD or high risk^c drinkers	33.4%
Nonactive DSM-5 AUD who are currently abstinent or currently low risk drinkers	16.0%
No lifetime DSM-5 AUD diagnosis – and low risk drinkers	50.5%
Maximum drinks in 24hrs (MAXD: mean, SD)	18.9 (16.4)
Self-rating of ethanol (SRE-T) score (N=4,337)	2.21 (0.61)
DSM-5 Alcohol use disorder symptom count (DSM5AUDSX mean, SD)	3.073.47)

^a.

Family history positive: either or both parents have history of lifetime AUD

^b.

Reflects past-12 month report at final interview.

^c.

High risk defined as men: >= 5 drinks/day or >= 15 drinks in one week; women: >= 4 drinks/day or >= 8 in one week