Table 4.
Percentage of homes with detectable levels of cotinine in nonsmoker’s urine, nicotine on nonsmoker’s finger, and nicotine in house household dust, air, and surfaces.
| Cut-offA | Part 1: Original Occupants | Part 2: New Nonsmoker Occupants | |
|---|---|---|---|
| % ≥ Cut-Off | % ≥ Cut-Off | ||
| Urine Cotinine | 0.30 ng/ml | ||
| Nonsmoker Homes | 10 | 8 | |
| Smoker Homes | 97 | 40 | |
| Finger Nicotine | 50.0 ng/wipeB | ||
| Nonsmoker Homes | 2 | 0 | |
| Smoker Homes | 93 | 35 | |
| Air Nicotine Living Room | 0.10 μg/m3 | ||
| Nonsmoker Homes | 6 | 25 | |
| Smoker Homes | 90 | 44 | |
| Air Nicotine Bedroom | 0.10 μg/m3 | ||
| Nonsmoker Homes | NA | NA | |
| Smoker Homes | 78 | 39 | |
| Surface Nicotine Living Room | 5.0 μg/m2 | ||
| Nonsmoker Homes | 16 | 19 | |
| Smoker Homes | 86 | 54 | |
| Surface Nicotine Bedroom | 5.0 μg/m2 | ||
| Nonsmoker Homes | NA | NA | |
| Smoker Homes | 75 | 44 | |
| Dust Nicotine Living Room | 5.0 μg/g | ||
| Nonsmoker Homes | 28 | 19 | |
| Smoker Homes | 90 | 84 | |
| Dust Nicotine Bedroom | 5.0 μg/g | ||
| Nonsmoker Homes | NA | NA | |
| Smoker Homes | 84 | 70 | |
| Dust Nicotine Living Room | 5.0 μg/m2 | ||
| Nonsmoker Homes | 31 | 25 | |
| Smoker Homes | 91 | 60 | |
| Dust Nicotine Bedroom | 5.0 μg/m2 | ||
| Nonsmoker Homes | NA | NA | |
| Smoker Homes | 64 | 52 |
Note
A
Cut-offs were established to discriminate between smoker and nonsmoker homes.
B
Wipes were 0.1 m × 0.1 m; 50 ng/wipe is equivalent to 5.0 μg/m2.