Table 4.

Salivary cotinine and creatinine-adjusted total NNAL levels by site

CountrynSalivary cotinine (ng/mL)Total NNAL—visit 2—creatinine normalized (ng/mg creatinine)
Geometric mean (95% confidence limits)Geometric mean (95% confidence limits)
Canada25268 (208-346)0.072 (0.054-0.097)
United States (New York)24236 (200-279)0.290 (0.203-0.416)
United States (Minnesota)27232 (174-309)0.217 (0.167-0.283)
Australia25337 (289-392)0.109 (0.075-0.158)
United Kingdom23213 (169-268)0.139 (0.096-0.202)