Table 1 The percentile distributions of cotinine levels in NLF
From: Assessment of smoking status based on cotinine levels in nasal lavage fluid
Self-reported smoking habit | N | Min | 10th | 25th | 50th | 75th | 90th | Max |
|---|---|---|---|---|---|---|---|---|
Nonsmokers | 60 | 0.00 | 0.56 | 0.59 | 0.65 | 0.71 | 0.76 | 0.90 |
Nonsmokers ETS | 10 | 0.54 | 0.59 | 0.60 | 0.64 | 0.86 | 0.98 | 1.02 |
Smokers | 23 | 0.9 | 1.11 | 1.70 | 4.27 | 7.51 | 10.41 | 11.73 |