From: Design, recruitment, and retention of African-American smokers in a pharmacokinetic study
 | All | Menthol (n = 29) | Non-Menthol (n = 19) | P value |
---|---|---|---|---|
Mean age (SD) | 50.9 (9.7) | 47.4 (9.3) | 56.3 (7.9) | <0.0011 |
Gender, n (% female) | 28 (58.3%) | 16 (57.1%) | 12 (42.9%) | 0.772 |
BMI* | 29.9 (7.0) | 30.5 (7.0) | 29.0 (7.1) | 0.48 |
Mean age of smoking initiation | 17.6 (4.4) | 18.0 (5.1) | 16.9 (3.1) | 0.34 |
Mean age of regular smoking | 19.7 (5.0) | 19.9 (5.9) | 20.9 (4.5) | 0.70 |
No. of years smoked | 33.4 (10.1) | 29.4 (9.4) | 39.4 (7.8) | <0.001 |
Mean CPD at baseline | 15.1 (4.6) | 15.3 (5.2) | 16.1 (3.7) | 0.331 |
FTND Score** | 4.8 (1.7) | 4.5 (1.6) | 5.2 (1.8) | 0.18 |