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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Am J Addict. 2017 Aug 31;26(7):751–759. doi: 10.1111/ajad.12607

Table 1.

Demographic characteristics of the sample. No differences were statistically significant between the two groups (Chi square test).

Opioid
Non-Users
Opioid
Users
N 254 51
Gender (% male) 53 75
Age (years; SD) 31.4; 12.4 28.1; 11.4
MDD Spectrum (%) 64 57
Anxiety Spectrum (%) 56 63
Any PD (%) 34 43
rs16969968 GG (%) 50 51

PD: personality disorders.