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Sample demographics.
| Demographics | |
|---|---|
| Female | 56.2% |
| Age | 38.67 (9.76) |
| Study of Origin (n Participants) | |
| COGA | 927 |
| FSCD | 557 |
| COGEND | 1089 |
COGA, Collaborative Study of the Genetics of Alcoholism; FSCD, Family Study of Cocaine Dependence; COGEND, Collaborative Study of the Genetics of Nicotine Dependence.
