Table 2.
Subject demographics and tobacco use history items (N=349–359)
| Characteristics | Number of subjects (%) | |
|---|---|---|
| Site N=359 | ||
| Oregon | 208 (57.9) | |
| Minnesota | 112 (31.2) | |
| West Virginia | 39 (10.9) | |
| Gender N=357 | ||
| Male | 345 (96.6) | |
| Race N=357 | ||
| White, non-Hispanic | 331 (92.7) | |
| Other | 26 (7.3) | |
| Annual personal income N=356 | ||
| <$15K | 130 (36.5) | |
| 15K–30K | 54 (15.2) | |
| > 30K | 172 (48.3) | |
| Smoked at least 100 cigarettes N=350 | ||
| Yes | 181 (51.7) | |
| No | 169 (48.3) | |
| Mean (SD) | Median(Min/Max) | |
| Age (years) | 37.1 (12.6) | 37(18/89) |
| Age when 1st used snuff | 17.7 (8.5) | 16(4/55) |
| Number of years using snuff daily | 13.9 (11.9) | 10.5(0/69) |
| Dependence score | 8.1 (3.7) | 8.0(0/17) |
| Median dip weight (grams) | 2.3 (1.5) | 1.9 (0.3/8.8) |
| Tins per week | 3.6 (2.2) | 3 (0.5/14) |
| Mean dips per day | 7.0 (3.5) | 6(1/25) |
| Mean Duration per dip (min) | 69.3 (42.0) | 56.9 (4.2/229.2) |
| Mean daily dip duration (hr) | 6.8 (3.9) | 6.5 (0.4/17.4) |
| TNE nmol/mg creatinine | 72.8 (70.9) | 54.6 (0.1/510.9) |
| Total NNAL pmol/mg creatinine | 3.29 (3.77) | 2.23 (0.04/29.91) |
| Total NNN pmol/mg creatinine | 0.284 (3.374) | 0.059 (0.003/63.068) |