Table 1 Demographics for the whole cohort (n = 45) of smokers and both SUBGROUPs (n = 21 for HTP and n = 24 for LTP based on adjusted accuracy on the high DEMAND condition of the Parametric Flanker Task).
From: Not all smokers are alike: the hidden cost of sustained attention during nicotine abstinence
Variable | Total cohort (n = 45) | Task performance subgroups | Test statistic | |
|---|---|---|---|---|
High task performers (HTP) | Low task performers (LTP) | |||
Gender (M/F) | 27/18 | 13/8 | 14/10 | χ2 = 0.06, p = 0.81 |
Age (years) | 38.9 ± 1.5 | 39.3 ± 2.0 | 38.6 ± 2.2 | t = −1.65, p = 0.11 |
Race (A/AA/C/M) | 1/19/21/4 | 1/12/8/0 | 0/7/13/4 | χ2 = 7.34, p = 0.06 |
Education (years) | 13.44 ± 0.4 | 13.2 ± 0.7 | 13.6 ± 0.5 | t = −0.13, p = 0.90 |
IQ | 105 ± 2.0 | 101.4 ± 2.9 | 108.2 ± 2.8 | t = −2.20, p = 0.10 |
FTNDa | 4.4 ± 0.3 | 5 ± 0.4 | 3.4 ± 0.4 | t = 2.30, p = 0.03 |
Avg cigarettes per day | 14.0 ± 0.8 | 15.0 ± 1.3 | 13.1 ± 1.0 | t = −0.99, p = 0.33 |
Age began smoking | 17.2 ± 0.8 | 18.4 ± 1.4 | 16.1 ± 0.8 | t = 1.06, p = 0.30 |
Years smoked | 18.5 ± 1.6 | 18.8 ± 2.4 | 18.3 ± 2.1 | t = −0.5, p = 0.57 |
Alcohol use (drinks per week, only users) | 6.1 ± 0.2 | 3.33 ± 0.3 | 7.9 ± 0.4 | t = 2.03, p = 0.08 |
