Table 3 Average increase in cotinine concentration (ng/ml) in adult daily smokers per one cigarette smoked in the previous 24 hours, according to individual characteristics, type of tobacco, and smoking characteristics. Barcelona (Spain), 2004-2005.
From: Salivary cotinine concentrations in daily smokers in Barcelona, Spain: a cross-sectional study
n | β* | 95% CI† | R 2 | |
|---|---|---|---|---|
Total | 211 | 6.4 | 5.2, 7.7 | 0.338 |
Individual characteristics | ||||
Sex | ||||
men | 104 | 5.3 | 3.5, 7.2 | 0.244 |
women | 107 | 7.7 | 5.9, 9.5 | 0.412 |
Age (years) | ||||
17-44 | 120 | 7.0 | 5.2, 8.8 | 0.329 |
45-64 | 79 | 5.8 | 3.9, 7.8 | 0.329 |
≥ 65 | 12 | 6.1 | -0.2, 12.5 | 0.316 |
Educational level | ||||
less than primary and primary | 68 | 5.4 | 2.9, 7.8 | 0.226 |
secondary | 74 | 6.5 | 4.6, 8.4 | 0.392 |
university | 68 | 7.5 | 5.4, 9.6 | 0.435 |
Body mass index (kg/m 2)‡ | ||||
underweight | 4 | --§ | --§ | --§ |
normal | 116 | 8.2 | 6.5, 9.9 | 0.439 |
overweight | 66 | 6.5 | 4.3, 8.7 | 0.350 |
obese | 21 | 1.9 | -0.8, 4.8 | 0.102 |
Type of tobacco | ||||
Type of cigarettes | ||||
regular | 148 | 5.8 | 4.4, 7.2 | 0.321 |
non-regular (light, ultralight, etc.) | 63 | 8.4 | 5.7, 11.1 | 0.395 |
Type of tobacco | ||||
blond | 171 | 6.9 | 5.5, 8.3 | 0.356 |
black | 40 | 5.1 | 2.1, 8.0 | 0.244 |
Use of filter tip | ||||
with filter | 209 | 6.3 | 5.1, 7.6 | 0.333 |
without filter | 2 | --§ | --§ | --§ |
Smoking characteristics | ||||
Frequency of inhalation | ||||
all the time | 21 | 5.9 | 2.3, 9.5 | 0.384 |
half the time | 150 | 8.4 | 6.8, 9.9 | 0.439 |
seldom | 39 | 3.3 | 0.6, 6.0 | 0.147 |
Depth of inhalation | ||||
light | 22 | 7.9 | 2.8, 13.0 | 0.348 |
moderate | 78 | 4.9 | 2.7, 7.0 | 0.217 |
deep | 108 | 6.8 | 5.2, 8.3 | 0.416 |