Table 1 Descriptive characteristics of the Spanish Caucasian individuals with drug dependence and controls used in the case-control association study.

From: Association of the PLCB1 gene with drug dependence

Gender N (%)

Discovery sample

Replication sample

Drug dependence N = 735

Control N = 739

Drug dependence N = 663

Control N = 667

Male

574 (78.1)

577 (78.1)

507 (76.5)

510 (76.5)

Female

161 (21.9)

162 (21.9)

156 (23.5)

157 (23.5)

Age (mean and SD)

 

37.3 ± 9.6

55.4 ± 15.9

37.3 ± 9.9

55.8 ± 16.3

  1. SD: Standard deviation.
Back to article page