Table 5.
Summary statistics for CEMA and selected markers of tobacco smoke exposure in the urine of smokers and non-smokers (NS).
| Variable | Group | n | Mean | StDev | Median | Tukey group |
|---|---|---|---|---|---|---|
| cig/day | NS | 50 | 0 | 0 | 0 | - |
| 1mg | 48 | 16.8 | 6.6 | 15.0 | a | |
| 4mg | 45 | 19.2 | 6.5 | 18.0 | ab | |
| 10mg | 47 | 20.1 | 5.1 | 20.0 | b | |
| 3-HPMA (μg/24h) | NS | 50 | 228.4 | 70.4 | 231.6 | a |
| 1mg | 48 | 810.7 | 559.7 | 680.4 | b | |
| 4mg | 45 | 1231.0 | 687.0 | 1129.0 | c | |
| 10mg | 47 | 1945.0 | 968.0 | 1806.0 | d | |
| Total NNAL (ng/24h) | NS | 50 | 12.7 | 7.5 | 11.1 | a |
| 1mg | 48 | 173.0 | 125.5 | 136.7 | b | |
| 4mg | 45 | 274.1 | 144.2 | 276.0 | c | |
| 10mg | 47 | 486.0 | 235.5 | 426.6 | d | |
| nicotine MLE (mg/day) | NS | 50 | -a | - | - | - |
| 1mg | 48 | 14.0 | 8.7 | 11.5 | a | |
| 4mg | 45 | 18.4 | 7.6 | 19.9 | ab | |
| 10mg | 47 | 29.9 | 11.9 | 28.5 | c | |
| Tneq (mg/24h) | NS | 50 | 0.0 | 0.0 | 0.0 | a |
| 1mg | 48 | 7.1 | 4.8 | 5.6 | b | |
| 4mg | 45 | 12.5 | 6.2 | 12.1 | c | |
| 10mg | 47 | 18.8 | 8.2 | 17.1 | d | |
| CEMA (μg/24h) | NS | 50 | 1.3 | 0.7 | 1.1 | a |
| 1mg | 48 | 96.9 | 81.8 | 75.4 | b | |
| 4mg | 45 | 139.3 | 72.1 | 140.2 | c | |
| 10mg | 47 | 214.8 | 113.8 | 186.6 | d |
a
MLE not relevant for non-smokers