Table 1.
Baseline characteristics of the study population
| non-ECRS | ECRS | P value | |
|---|---|---|---|
| Number of patients | 20 | 36 | - |
| Age(years old; range) | 64.7 (39–76) | 56.1 (23–74) | 0.009 |
| Female/male | 5/15 | 11/25 | N.S. |
| Atopic status(over class 2) | 9/20 | 20/36 | N.S. |
| Serum IgE(IU/ml) | 424.5 (13–3767) | 441.4 (8.6–3700) | N.S. |
| Peripheral blood eosinophil count(%) | 3.0 (0.6–8.5) | 8.5 (1.8–21.7) | <0.001 |
| Bilateral lesion | 10/20 | 35/36 | <0.001 |
| Nasal polyps | 11/20 | 34/36 | <0.001 |
| Predoninant opacification of the ethmoid sinus | 1/20 | 27/36 | <0.001 |
| Mean ethmoid score | 1.23 (0–4) | 3.02 (1–4) | <0.001 |
| Mean frontal score | 1.20 (0–3) | 2.28 (0–4) | 0.012 |
| Comorbidity of Asthma | 1/20 | 13/36 | 0.010 |
| Comorbidity of otitis media | 0/20 | 5/36 | N.S. |
Data are shown as the mean with ranges in parentheses. The level of significance was obtained by the Mann-Whitney U test