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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Drug Alcohol Depend. 2018 Jan 12;184:48–56. doi: 10.1016/j.drugalcdep.2017.11.020

Table 1.

Demographic and Substance Use Measures

EOS (n=10) LOS (n=10) HNS (n=10) p
Age 33.9 ± 3.3 31.2 ± 4.8 31.1 ± 3.9 ns
% female 50% 50% 50% -
Education 11.5 ± 4.2 16.2 ± 2.5 11.4 ± 8.0 ns
FTND scores 6.1 ± 1.0 5.4 ± 1.0 - ns
Age at 1st cigarette 12.2 ± 1.6 15.8 ± 3.7 - 0.02
Age began daily/near daily smoking 13.2 ± 1.3 17.7 ± 1.2 - 0.000
Daily cigarettes smoked 18.5 ± 5.7 17.1 ± 5.5 - ns
Smoking exposure (years) 20.8 ± 3.7 13.0 ± 4.6 - 0.000
Expired CO levels at study visit 8.7 ± 2.6 8.1 ± 3.3 2.3 ± 0.7 0.000
(EOS>HNS)
(LOS>HNS)
Alcohol drinks/week 0.8 ± 0.9 6.7 ± 5.7 1.7 ± 1.7 0.01
(LOS>EOS)
(LOS>HNS)
MJ use/week 0.3 ± 0.7 - - -