Disease classification | No asthma | Intermittent | Mild persistent | Moderate/severe persistent | p value |
---|---|---|---|---|---|
Number of subjects | 93 | 31 | 15 | 20 | Â |
Age(years) (±SD) | 7.6 ± 0.8 | 7.6 ± 0.5 | 7.4 ± 0.8 | 7.4 ± 1.0 | 0.54 |
Female | 46 (49%) | 10 (32%) | 6 (40%) | 8 (40%) | 0.38 |
Male | 47 (51%) | 21 (68%) | 9 (60%) | 12 (60%) | Â |
Caucasian | 89 (96%) | 29 (94%) | 11 (73%) | 16 (80) | 0.008 |
African American | 3 (3%) | 3 (10%) | 6 (40%) | 6 (30%) | <0.0001 |
American Indian | 4 (4%) | 0 (0%) | 0 (0%) | 0 (0%) | 0.84 |
Asian | 0 (0%) | 1 (3%) | 0 (0%) | 0 (0%) | 0.42 |
Hispanic or Latino | 4 (4 %) | 1 (3%) | 1 (7%) | 0 (0%) | 0.83 |
Spirometry(median [25th, 75th]) | Â | Â | Â | Â | Â |
FEV1 | 1.50 [1.37, 1.72] | 1.54 [1.27, 1.66] | 1.23 [1.09, 1.63] | 1.46 [1.29, 1.83] | 0.11 |
FEV1% pred | 103 [95, 109] | 103 [89, 113] | 90 [85, 101] | 102 [94, 107] | 0.43 |
FVC | 1.85 [1.64, 2.06] | 1.81 [1.60, 2.05] | 1.62 [1.31, 1.93] | 1.88 [1.51, 2.21] | 0.06 |
FVC% pred | 108 [100, 115] | 110 [98, 118] | 96 [94, 116] | 114 [105, 120] | 0.19 |
FEV0.5 | 1.11 [1.01, 1.30] | 1.14 [0.97, 1.29] | 0.92 [0.78, 1.18] | 1.07 [0.97, 1.21] | 0.07 |
FEF25-75 | 1.63 [1.23, 1.95] | 1.54 [1.03, 1.88] | 1.21 [0.98, 1.51] | 1.48 [1.25, 1.70] | 0.16 |
PEF | 2.98 [2.58, 3.50] | 3.20 [2.59, 3.65] | 2.46 [2.16, 2.99] | 2.66 [2.51, 3.17] | 0.07 |
FEV1/FVC | 0.85 [0.79, 0.88] | 0.82 [0.77, 0.86] | 0.82 [0.81, 0.88] | 0.81 [0.77, 0.86] | 0.43 |
FEV0.5/FVC | 0.63 [0.58, 0.69] | 0.60 [0.55, 0.65] | 0.62 [0.56, 0.65] | 0.57 [0.55, 0.65] | 0.24 |
Total lgE (median [25th, 75th]) | 38 [19, 92] | 49 [15, 103] | 149 [20, 331] | 218 [103, 475] | 0.001 |
Any FEIA | 40/91 (44%) | 16/29 (55%) | 11/15 (73%) | 17/20 (85%) | 0.003 |
Aero FEIA | 38/91 (42%) | 16/29 (55%) | 11/15 (73%) | 17/20 (85%) | 0.002 |
Perennial aero FEIA | 34/91 (37%) | 15/29 (52%) | 11/15 (73%) | 16/20 (80%) | 0.001 |
Seasonal aero FEIA | 23/91 (25%) | 7/29 (24%) | 4/15 (27%) | 9/20 (45%) | 0.33 |