Table 3.
Comparison of EBC pH in healthy subjects, asthma, allergic rhinitis, atopic dermatitis and COPD. Data are presented as mean ± standard deviation unless otherwise written. Adapted from [6, 16, 17, 23]
| Disease condition | pH |
|---|---|
| Healthy adults [25] | 7.50 ± 0.20 |
| [165] | 7.61 (CI 7.52–7.70) |
| In children [16] | 7.78 (range 7.06–8.10) |
| Asthma exacerbation [25] | 5.23 ± 0.21 |
| Stable asthma [25] | 7.8 ± 0.1 |
| In children [16] | 7.32 (range 6.2–8.02) |
| In children [166] | 6.46 (IQR 5.86–6.72) |
| Mild asthma [25] | 7.6 (CI 7.55–7.65) |
| Moderate asthma without GERD [25] | 7.3 ± 0.60 |
| Moderate asthma with GERD [25] | 7.2 ± 0.1 |
| Smoking asthmatics [17] | 6.3 ± 0.8 |
| Allergic rhinitis in children [16] | 7.48 (range 6.90–7.98) |
| Atopic dermatitis in children [16] | 7.40 (range 7.00–7.97) |
| COPD [165] | 6.97 (CI 6.65–7.29) |
Abbreviations: 95% confidence interval (CI); interquartile range (IQR); gastroesophageal reflux disease (GERD); chronic obstructive pulmonary disease (COPD).