Comorbidity and smokingPts with RS (n=10)Pts without RS (n=36)P-value
Respiratory disease n (%)1 (10)2 (5.6)p>0.05
Respiratory disease n (%)3 (30)10 (27.8)p>0.05
IHD n (%)2 (20)4 (11.1)p>0.05
Anemia n (%)5 (50)8 (22.2)p>0.05