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TABLE 1
BASELINE CHARACTERISTICS OF SUBJECTS WITH DIFFERENT CATEGORIES OF
SELF-REPORTED ENVIRONMENTAL TOBACCO SMOKE EXPOSURE
|
|
|
|
No Exposure
at Either Time
(n = 322) |
|
Exposure at Baseline,
None at Follow-up
(n = 43) |
|
None at Baseline,
Exposure at Follow-up
(n = 56) |
|
Exposure at Baseline
and Follow-up
(n = 30) |
|
p Value |
|
| Age, mean ± SD* |
|
39.9 ± 7.8 |
|
40.1 ± 8.9 |
|
38.8 ± 9.3 |
|
39.4 ± 7.8 |
|
0.8 |
Female sex, n (%) |
|
231 (72%) |
|
27 (63%) |
|
39 (70%) |
|
20 (67%) |
|
0.6 |
| White race, non-Hispanic, n (%) |
|
227 (71%) |
|
32 (74%) |
|
33 (59%) |
|
18 (60%) |
|
0.2 |
Income, U.S. dollars |
|
|
|
|
|
|
|
|
|
|
| Median |
|
31,250 |
|
22,500 |
|
22,500 |
|
28,125 |
|
|
| Interquartile range |
|
17,500-43,750 |
|
15,000-35,000 |
|
12,500-35,000 |
|
17,500-31,250 |
|
0.085 |
| Education, mean yr ± SD |
|
14.7 ± 2.6 |
|
14.4 ± 2.2 |
|
14.1 ± 2.1 |
|
14.0 ± 2.3 |
|
0.2 |
| Atopic history, n (%) |
|
254 (79%) |
|
38 (88%) |
|
43 (77%) |
|
24 (80%) |
|
0.5 |
| Married or cohabitating, n (%) |
|
220 (68%) |
|
28 (65%) |
|
36 (64%) |
|
20 (67%) |
|
0.9 |
| Asthma onset before age 18 yr, n (%) |
|
155 (48%) |
|
20 (47%) |
|
26 (46%) |
|
9 (30%) |
|
0.3 |
|
|
*
Age and education were examined using ANOVA.
|
Sex, race, marital status, age of onset, and atopic status were compared using the chi-square test.
|
Income was examined using the Kruskal-Wallis test.
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