Characteristics | N | COHb (%) Mean ± SD | Statistics | |
Coefficient | P-Value | |||
Duration of Smoking Habit <5 years ≥5 years |
21 9 |
15.69 ± 8.43 16.16 ± 9.27 | t, 0.136 | 0.893 |
Frequency of Smoking Always Occasionally Rarely |
4 11 15 |
27.10 ± 3.21 15.63 ± 10.55* 12.97 ± 4.88* | F, 5.76 | 0.008 |
Smoking Intensity <5 sticks per day ≥5 sticks per day |
28 2 |
15.35 ± 8.62 22.54 ± 3.03 | t, −1.16 | 0.256 |