|
Baseline characteristics of the study subjects (N = 413) |
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| Variables |
Men (n = 231) |
Women (n = 182) |
p for differencea |
|
|
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| No. (%) of subjects |
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| Ethnicity |
.12 |
||
| Hispanic |
65 (38.1) |
48 (26.4) |
|
| Non-Hispanic white |
135 (58.5) |
99 (54.4) |
|
| Black |
11 (4.8) |
15 (8.2) |
|
| Asian |
10 (4.3) |
18 (9.9) |
|
| Other |
10 (4.3) |
2 (1.1) |
|
| Smoking status |
.005 |
||
| Current smokers |
76 (32.9) |
39 (21.4) |
|
| Former smokers |
67 (29.0) |
50 (27.4) |
|
| Never smokers |
88 (38.1) |
93 (51.2) |
|
|
|
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| Mean ± SD |
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| Age (yr) |
49.3 ± 4.5 |
51.9 ± 4.5 |
<.0001 |
| Body height (m) |
1.76 ± .07 |
1.61 ± .07 |
<.0001 |
| Body mass index (kg/m2) |
29.0 ± 4.9 |
28.0 ± 6.3 |
.002 |
| Mean IMTb(μm) |
708.8 ± 96.3 |
682.1 ± 88.0 |
<.0001 |
| Echogenic layer |
364.4 ± 98.1 |
331.0 ± 67.8 |
<0.0001 |
| Echogenic layer (% IMT) |
44.5 ± 7.4 |
42.6 ± 7.1 |
0.0093 |
| Echolucent layer |
362.9 ± 83.9 |
367.9 ± 91.5 |
0.78 |
| Echolucent layer (% IMT) |
50.0 ± 9.3 |
52.3 ± 9.4 |
0.01 |
|
a p values for categorical variables were based on x2 analysis; p values for continuous variables were based on ANOVA. b IMT, carotid artery intima-media thickness | |||
Fan et al. BMC Cardiovascular Disorders 2006 6:42 doi:10.1186/1471-2261-6-42 |
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