Table 2.
Geometrical mean (ppb) and geometrical SD of FENO measurement on six occasions in smokers and non-smokers stratified by gender.
| Subjects | Visit 1 | Visit 2 | Visit 3 | Visit 4 | Visit 5a | Visit 5b | Total | |
| Smokers | Men (n = 9) | 17.8 (1.82) | 15.8 (1.78) | 15.1 (1.58) | 15.8 (1.66) | 14.8 (1.62) | 16.2 (1.74) | 15.8 (1.66) |
| Women (n = 9) | 12.6 (2.00) | 13.2 (2.09) | 11.7 (1.78) | 11.0 (1.82) | 10.5 (1.86) | 10.0 (1.62) | 11.5 (1.82) | |
| Non-smokers | Men (n = 10) | 33.9 (2.57) | 36.3 (2.45) | 30.9 (2.57) | 32.4 (2.51) | 32.4 (2.51) | 32.4 (2.51) | 33.1 (2.40) |
| Women (n = 10) | 17.4 (1.78) | 16.2 (1.51) | 14.4 (1.51) | 17.4 (1.41) | 16.6 (1.51) | 15.8 (1.48) | 16.2 (1.51) | |
Visit 5a: 9:00 – 10:00 h
Visit 5b: 14:00 – 15:00 h.