Smoking intensity/smoking history | n | SpO2 | Hb (g/dl) | PAPm (mm Hg) |
Mild | 33 | 84.8±1.7 | 16.3±1.6 | 22.5±3.6 |
Moderate | 82 | 84.2±2.2 | 16.5±1.7 | 22.8±4.4 |
Heavy | 67 | 83.1±2.5* | 17.2±2.1‡ | 24.2±5.2¶ |
Short term | 41 | 85.2±2.4 | 16.6±1.6 | 22.1±3.5 |
Medium term | 65 | 84.7±1.6 | 17.2±1.8 | 22.5±4.5 |
Long term | 76 | 84.2±2.1† | 18.1±2.3§ | 24.0±5.7** |
Data are presented as mean±SD.
↵* Heavy levels of smoking versus moderate (p=0.002) and mild levels of smoking (p<0.001).
↵† Long-term smoking versus medium-term (p=0.009) and short-term smoking (p<0.001).
↵‡ Heavy levels of smoking versus moderate (p=0.036) and mild levels of smoking (p<0.001).
↵§ Long-term smoking versus medium-term (p=0.008) and short-term smoking (p<0.001).
↵¶ Heavy levels of smoking versus moderate (p=0.048) and mild levels of smoking (p=0.040).
↵** Long-term smoking versus medium-term (p=0.057) and short-term smoking (p=0.044).
Hb, haemoglobin concentration; PAPm, mean pulmonary artery pressure; SpO2, arterial oxygen saturation.