Table 1 Demographic characteristics of the groups
Parameter | Group-1 | Group-2 | Group-3 | Group-4 |
|---|---|---|---|---|
Patients (n) | 19 | 18 | 19 | 19 |
Gender (male: female) | 15: 4 | 12: 6 | 13: 6 | 14: 5 |
Age in years (mean ± SD) | 52.6 ± 6.1 years | 49.5 ± 2.3 years | 50.7 ± 2.2 years | 48.1 ± 1.3 years |
Duration of smoking (pack-years) | 24.3 ± 0.7 pack years | NA | NA | NA |
Duration of vaping (in years) | NA | 12.5 ± 0.8 years | NA | NA |
Daily frequency of vaping | NA | 25.1 ± 3.5 times daily | NA | NA |
Number of puffs inhaled with each vaping session | NA | 6.6 ± 0.7 puffs per session | NA | NA |
Nicotine concentration (mg/ml) | NA | 14.6 ± 4.05 mg/ml | NA | NA |