Table 1.
Basic demographic information of the three smoking phenotypes by study population
African-American | European-American | |
---|---|---|
Number of genotyped subjects | 1790 | 1249 |
Males (%) | 1003 (56.0) | 721 (57.7) |
Age (years±SD) | 41.2±9.7 | 38.6±11.9 |
Household gross income (dollars/year±SD) | 16889±20768 | 30541±34971 |
| ||
Cigarettes smoked per day (CSPD) | 1385 | 915 |
CSPD (Means±SD) | 13.5±9.1 | 18.8±9.6 |
Males (%) | 834 (60.2) | 549 (60.0) |
Age (years±SD) | 42.2±8.8 | 38.4±11.3 |
| ||
DSM-IV diagnosis of ND | ||
Cases | 990 | 716 |
Males (%) | 585 (59.0) | 434 (60.6) |
Age (years±SD) | 41.9±8.5 | 38.1±10.9 |
Controls | 237 | 223 |
Males (%) | 59 (24.9) | 92 (41.3) |
Age (years±SD) | 36.6±12.8 | 38.8±14.7 |
| ||
Dichotomized FTND | ||
FTND (Means±SD) | 3.3±2.7 | 3.7±3.1 |
Cases | 897 | 705 |
Males (%) | 540 (60.2) | 434 (61.6) |
Age (years±SD) | 42.1±8.6 | 38.8±10.8 |
Controls | 229 | 214 |
Males (%) | 53 (23.6) | 86 (41.3) |
Age (years±SD) | 36.2±12.9 | 38.5±14.9 |