Table 1

Baseline characteristics of participants enrolled in the PK study (n = 48)

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


1Wilcoxon rank sum test; 2Fisher's exact test; all other p-values calculated with t -tests;

*Body Mass Index. **Fagerström Test of Nicotine Dependence.

Faseru et al. BMC Medical Research Methodology 2010 10:6   doi:10.1186/1471-2288-10-6

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