TABLE 1.
DESCRIPTIVE CHARACTERISTICS ASSOCIATED WITH WOOD SMOKE EXPOSURE IN THE ELIGIBLE COHORT*
| Wood Smoke Exposure Present (N = 515; 27.7%) |
Wood Smoke Exposure Absent (N = 1,346; 72.3%) |
||||
|---|---|---|---|---|---|
| Characteristic | n (%) | Mean (SD) | n (%) | Mean (SD) | P Value |
| Female | 425 (82.5%) | 1,078 (80.1%) | 0.23 | ||
| Age, yr | |||||
| 40–49 | 165 (32.0%) | 360 (26.7%) | 0.02 | ||
| 50–59 | 196 (38.1%) | 456 (33.9%) | 0.09 | ||
| 60–69 | 119 (23.1%) | 373 (27.7%) | 0.04 | ||
| ≥ 70 | 35 (6.8%) | 157 (11.7%) | 0.002 | ||
| Hispanic ethnicity | 115 (22.3%) | 202 (15.0%) | < 0.001 | ||
| Obese (BMI ≥ 30 kg/m2) | 156 (30.3%) | 410 (30.5%) | 0.94 | ||
| ≥ High school education | 349 (67.8%) | 969 (72.0%) | 0.07 | ||
| Current cigarette smoker | 318 (62.7%) | 761 (57.5%) | 0.04 | ||
| Cigarette smoking in pack-yr | 39.0 (18.9) | 39.5 (21.1) | 0.88 | ||
| Cigarette smoking > 40 pack-yr | 181 (35.1%) | 485 (36.0%) | 0.72 | ||
| Chronic bronchitis | 199 (38.6%) | 373 (27.7%) | <0.001 | ||
| Airflow obstruction (NHANES III) | 150 (29.1%) | 277 (20.6%) | <0.001 | ||
| Airflow obstruction (GOLD) | 164 (31.8%) | 323 (24.0%) | 0.001 | ||
| FEV1/FVC, ratio % | 70.6 (10.8) | 71.9 (10.5) | 0.01 | ||
| FVC, % predicted | 100.6 (17.5) | 100.9 (16.3) | 0.92 | ||
| FEV1% predicted | 90.1 (20.8) | 91.9 (18.5) | 0.09 | ||
Definition of abbreviation: BMI = body mass index.
*
Categorical and continuous variables were analyzed using chi-square and Wilcoxon rank sum tests, respectively.