Table 5

Association of former smoking with baseline and progression of overall IMT and IMT components compared to never smokers*

Baseline

Progression

Former smoker

Never smoker

Difference

p value

Former smoker

Never smoker

Difference

P value

Women (N = 143)

Intima-medial thickness(μm)

678.4 ± 13.4

672.9 ± 10.8

5.5 ± 16.2

0.74

10.0 ± 2.8

10.2 ± 2.1

-0.2 ± 3.3

0.94

Echogenic layer (μm)

314.6 ± 8.3

317.6 ± 6.8

-3.0 ± 10.1

0.76

13.6 ± 3.3

7.0 ± 2.6

6.5 ± 4.0

0.10

Echolucent layer (μm)

367.4 ± 14.6

361.3 ± 11.8

6.1 ± 17.7

0.73

-3.5 ± 3.8

1.7 ± 2.9

-5.2 ± 4.5

0.24

Men (N = 155)

Intima-medial thickness(μm)

707.9 ± 9.7

677.2 ± 9.2

30.7 ± 13.3

0.02

11.6 ± 2.2

12.0 ± 2.0

0.4 ± 3.0

0.89

Echogenic layer (μm)

341.8 ± 9.0

341.7 ± 8.6

0.08 ± 12.4

0.99

7.9 ± 3.5

6.8 ± 3.3

1.1 ± 4.8

0.82

Echolucent layer (μm)

372.5 ± 10.6

344.8 ± 10.2

27.7 ± 14.7

0.06

1.1 ± 3.7

1.7 ± 3.5

0.60 ± 5.1

0.90

* Data are presented as least-square mean ± standard error. The parameter estimates were obtained from individual growth models, adjusted for age, body height, and race/ethnicity.

Fan et al. BMC Cardiovascular Disorders 2006 6:42   doi:10.1186/1471-2261-6-42