Table 2.
Changes in O2 saturation, FeNO and CO levels and in exhaled air temperature after exposure to t-cigarette, e-cigarette or simulated exposure.
| Baseline mean ± SD (min-max) | Minute 1 mean ± SD (min-max) | Minute 30 mean ± SD (min-max) | pI-II-III* | pI-II** | pII-III** | pI-III** | |
|---|---|---|---|---|---|---|---|
| O 2 Saturation [%] | |||||||
| C-Group n = 30 | 98.23 ± 0.97 (97–100) | 98.00 ± 1.08 (96–100) | — | — | 0.1*** | — | — |
| T-Group n = 30 | 97.97 ± 1.07 (96–100) | 97.40 ± 1.13 (95–99) | 98.00 ± 1.14 (95–100) | 0.009 | 0.01 | 0.01 | 0.9 |
| E-Group n = 30 | 97.63 ± 1.09 (96–100) | 97.70 ± 1.26 (95–100) | 97.70 ± 1.06 (95–100) | 0.8 | 0.8 | 0.9 | 0.7 |
| T/E-Group n = 30 | 97.73 ± 0.94 (96–100) | 97.53 ± 1.01 (96–100) | 97.60 ± 0.93 (96–100) | 0.5 | 0.2 | 0.8 | 0.4 |
| FeNO [ppb] | |||||||
| C-Group n = 30 | 19.63 ± 6.17 (11–33) | 19.46 ± 5.85 (7–30) | — | — | 0.7*** | — | — |
| T-Group n = 30 | 15.43 ± 5.57 (6–28) | 13.30 ± 4.91 (6–25) | 15.90 ± 5.83 (8–30) | 0.0001 | 0.0001 | 0.0001 | 0.2 |
| E-Group n = 30 | 17.43 ± 8.93 (5–39) | 15.93 ± 8.24 (5–35) | 18.4 ± 9.07 (6–39) | 0.0001 | 0.0001 | 0.0001 | 0.02 |
| T/E-Group n = 30 | 15.06 ± 8.44 (5–37) | 12.86 ± 7.22 (5–31) | 15.46 ± 8.19 (6–36) | 0.0001 | 0.0001 | 0.0001 | 0.5 |
| Exhaled CO level [ppm] | |||||||
| C-Group n = 30 | 1.90 ± 0.66 (1–3) | 2.03 ± 0.67 (1–3) | — | — | 0.2*** | — | — |
| T-Group n = 30 | 4.10 ± 4.28 (1–22) | 7.77 ± 4.26 (3–24) | 6.77 ± 3.90 (2–22) | 0.0001 | 0.0001 | 0.0002 | 0.0001 |
| E-Group n = 30 | 2.43 ± 0.82 (1–4) | 2.63 ± 0.81 (1–4) | 2.60 ± 0.90 (1–4) | 0.1 | 0.09 | 0.8 | 0.2 |
| T/E-Group n = 30 | 5.77 ± 4.15 (2–17) | 5.63 ± 3.79 (2–16) | 4.80 ± 3.09 (1–13) | 0.0001 | 0.4 | 0.0005 | 0.001 |
| Exhaled air temperature [°C] | |||||||
| C-Group n = 30 | 34.28 ± 0.47 (33.41–35.29) | 34.34 ± 0.50 (33.04–35.57) | — | — | 0.4*** | — | — |
| T-Group n = 30 | 34.28 ± 0.43 (33.65–35.09) | 34.27 ± 0.55 (33.03–35.43) | 34.58 ± 0.39 (33.76–35.40) | 0.0001 | 0.7 | 0.0003 | 0.0001 |
| E-Group n = 30 | 34.33 ± 0.61 (32.73–35.19) | 34.48 ± 0.48 (33.00–35.19) | 34.55 ± 0.40 (33.62–35.23) | 0.03 | 0.04 | 0.4 | 0.03 |
| T/E-Group n = 30 | 34.39 ± 0.4 (33.62–35.02) | 34.56 ± 0.35 (33.38–35.09) | 34.60 ± 0.29 (33.89–35.12) | 0.02 | 0.004 | 0.4 | 0.003 |
Legend: SD - standard deviation; min-max - minimum and maximum value range; I, II, III - order of measurements; *result of Friedman ANOVA; **Post-hoc Dunn’s test; ***Wilcoxon signed-ranked test.