Total area and smooth muscle area of biopsies from nonasthmatic and asthmatic subjects used for cyclin D1 immunohistochemistry
| Nonasthmatic | Mild asthma | Moderate asthma | Severe asthma | |
| Subjects n | 34 | 38 | 5 | 14 |
| Total biopsy area mm2 | 0.22 (0.17–0.34) | 0.28 (0.15–0.36) | 0.33 (0.16–0.33) | 0.26 (0.17–0.50) |
| Smooth muscle area % | 0.7 (0–5.7) | 3.0 (0–7.8) | 1.1 (0–20.5) | 19.9 (3.8–34.9)** |
Data are presented as median (interquartile range), unless otherwise stated. **: p<0.01 compared with nonasthmatic (Kruskal–Wallis test followed by Dunn’s post hoc test).