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.
Pearson correlation matrix for plasma nicotine and metabolite concentrations during ad libitum cigarette smoking (62 subjects)
| Nicotine | Cotinine | 3′-Hydroxycotinine | 3′-Hydroxycotinine/cotinine ratio | |
|---|---|---|---|---|
| Nicotine | 1.00 | |||
| Cotinine | 0.45** | 1.00 | ||
| 3′-hydroxycotinine | 0.14 | 0.62** | 1.00 | |
| 3′-hydroxycotinine/cotinine ratio | −0.38* | −0.12 | 0.52** | 1.00 |
P < 0.005
P < 0.001
