Table 1 Selected Characteristics of CHS participants with and without a lifetime history of physician diagnosed asthma at study entrya
Variable | All participants (N = 4548), Mean (SD) or N (%) | Asthma (N = 1199), Mean (SD) or N (%) | No asthma (N = 3349), Mean or (SD) (SD) or N (%) |
|---|---|---|---|
Sociodemographic | |||
Age (Years) | 6.5 (0.7) | 6.5 (0.7) | 6.5 (0.7) |
Gender | |||
Male | 2324 (51.1%) | 695 (58.0%) | 1629 (48.6%) |
Female | 2224 (48.9%) | 504 (42.0%) | 1720 (51.4%) |
Spanish language questionnaire | 1148 (25.2%) | 207 (17.3%) | 941 (28.1%) |
Race/ethnicity | |||
Hispanic white | 2531 (55.7%) | 610 (50.9%) | 1921 (57.4%) |
Non-Hispanic white | 1453 (32.0%) | 402 (33.5%) | 1051 (31.4%) |
Other | 564 (12.4%) | 187 (15.6%) | 377 (11.3%) |
Insurance status | 3813 (88.2%) | 1057 (92.1%) | 2756 (86.8%) |
BMI percentile | 61.1 (29.8) | 63.6 (29.4) | 60.2 (29.9) |
Education level | |||
Less than 12th grade (did not finish high school) | 942 (21.9%) | 179 (15.6%) | 763 (24.2%) |
Completed grade 12 (high school) | 824 (19.2%) | 216 (18.8%) | 608 (19.3%) |
Some college or technical school | 1628 (37.8%) | 512 (44.6%) | 1116 (35.4%) |
Completed 4 years of college | 501 (11.6%) | 131 (11.4%) | 370 (11.7%) |
Some graduate training after college | 408 (9.5%) | 111 (9.7%) | 297 (9.4%) |
Indoor/home exposures | |||
Any pets at home | 2387 (54.6%) | 680 (58.9%) | 1707 (53.1%) |
Any pests at home | 2811 (68.0%) | 777 (70.4%) | 2034 (67.0%) |
Carpet at home | 4030 (92.6%) | 1079 (93.0%) | 2951 (92.5%) |
Mildew at home | 1018 (24.8%) | 323 (30.0%) | 695 (22.9%) |
Water damage at home | 602 (14.0%) | 185 (16.3%) | 417 (13.2%) |
Gas stove at home | 3701 (85.5%) | 989 (86.3%) | 2712 (85.3%) |
Parental stressb | 4.1 (2.9) | 4.1 (2.9) | 4.0 (2.9) |
Secondhand smoke exposure | 328 (7.5%) | 94 (8.1%) | 234 (7.3%) |
Traffic/air pollution | |||
24-h average: PM10 (μg/m3) | 37.4 (12.3) | 37.6 (11.7) | 37.3 (12.5) |
24-h average: PM2.5 (μg/m3) | 17.6 (6.5) | 18.1 (6.3) | 17.5 (6.5) |
24-h average: NO2 (ppb) | 22.5 (8.2) | 23.3 (8.1) | 22.2 (8.2) |
8-h (10 am-6 pm) average O3 (ppb) | 43.6 (8.7) | 44.2 (8.3) | 43.4 (8.8) |
CALINE4 freeway NOx (ppb) | 15.8 (22.4) | 15.3 (18.7) | 15.9 (23.6) |
CALINE4 non-freeway NOx (ppb) | 5.6 (4.7) | 5.5 (4.4) | 5.6 (4.8) |
Symptoms/medication use | |||
Wheeze symptom | 641 (14.6%) | 500 (43.2%) | 141 (4.4%) |
Rhinitis (i.e. sneeze/runny nose symptoms) | 1458 (33.2%) | 622 (53.9%) | 836 (25.9%) |
Itchy eyes symptoms | 843 (19.3%) | 370 (32.3%) | 473 (14.7%) |
Any asthma/wheeze medication use | 693 (16.2%) | 565 (48.8%) | 128 (4.1%) |
Bronchitis symptoms | 781 (18.1%) | 416 (36.7%) | 365 (11.5%) |
Asthma/eczema | |||
Parent history of asthma | 1067 (24.7%) | 478 (42.2%) | 589 (18.5%) |
Lifetime history of eczema | 618 (14.6%) | 246 (21.9%) | 372 (12.0%) |
Asthma statusc | 599 (13.2%) | 599 (50.0%) | N/A |
Age of asthma onset (years) | 5.8 (4.3) | 5.8 (4.3) | N/A |