Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Salivary cotinine levels in two studied groups based on gender
| Group | Saliva cotinine (ng/ml) | P | |
|---|---|---|---|
| (mean ± SD) | |||
| Nonsmokers | Boys | 0.014 ± 0.010 | 0.860 |
| Girls | 0.017 ± 0.014 | ||
| Passive smokers | Boys | 0.120 ± 0.340 | 0.800 |
| Girls | 0.150 ± 0.370 |
SD: Standard deviation
