From:  Genome-wide association study of phenotypes measuring progression from first cocaine or opioid use to dependence reveals novel risk genes

Demographic information on cocaine exposed individuals contributing the time to cocaine use disorder analysis

CohortAAEA
Age μ (SD)Sex N (%) maleCD cases (N, mean years to dependence)CD controls (N, mean years to censoring)Age μ (SD)Sex N (%)maleCD (N, mean years to dependence)CD controls (N, mean years to censoring)
Yale-Penn42.5 (8.3)2,419 (60)3,554 (5.5)478 (17.8)38.0 (11.1)2,237 (62)2,712 (4.9)915 (16.3)
COGA56.9 (10.1)568 (57)572 (4.6)416 (13.8)52.1 (13.1)1380 (58)759 (3.9)1,620 (13.3)