Table 1.
Selected characteristics of the study population from age 1 to 5 years.
| Characteristic | Percenta (Number with characteristic/Total number analyzed)
|
||||
|---|---|---|---|---|---|
| Age 1 year | Age 2 years | Age 3 years | Age 5 years | ||
| Total number of subjects | 559 | 500 | 494 | 341 | |
| Sex | Male | 48% (268/559) | 45% (226/500) | 46% (227/494) | 44% (150/341) |
| Female | 52% (291/559) | 55% (274/500) | 54% (267/494) | 56% (191/341) | |
| Ethnicity | Dominican | 63% (354/559) | 62% (309/500) | 61% (300/494) | 57% (194/341) |
| African American | 37% (205/559) | 38% (191/500) | 39% (194/494) | 43% (147/341) | |
| Mother receiving Medicaid | 75% (415/558) | 77% (380/495) | 72% (352/492) | 72% (243/339) | |
| Annual income | <$10,000 | 39% (210/532) | 35% (166/475) | 34% (165/486) | 27% (92/336) |
| $10,000-19,999 | 34% (179/532) | 31% (149/475) | 33% (158/486) | 35% (116/336) | |
| ≥$20,000 | 27% (143/532) | 34% (160/475) | 34% (163/486) | 38% (128/336) | |
| Smoker in the household | Current | 23% (128/558) | 19% (97/500) | 19% (92/482) | 18% (55/299) |
| Any since birth | 32% (176/558) | 37% (185/500) | 39% (186/482) | 41% (124/299) | |
| Maternal asthma | 22% (83/383) | 22% (74/338) | 22% (73/336) | 21% (53/250) | |
| Doctor says child has asthma | 10% (55/558) | 15% (74/497) | 18% (90/489) | 21% (104/341) | |
| Any wheeze in previous 12 months | 38% (212/559) | 22% (112/500) | 19% (94/494) | 22% (94/341) | |
| Median [range] total IgE [IU/ml] | N/A | 37 [0-684] (n = 380) | 79 [1-2448] (n = 338) | 116 [0-1517] (n = 236) | |
| Positive allergic sensitizationb | Cockroach | N/A | 6.4% (24/373) | 10.4% (37/356) | 22.5% (53/236) |
| Mouse | N/A | 6.9% (26/378) | 7.8% (28/360) | 10.6% (25/235) | |
| Dust mite | N/A | 2.4% (9/376) | 4.4% (16/360) | 9.8% (23/236) | |
| Cat | N.A | 2.9% (9/306) | 5.6% (18/322) | 14.6% (34/232) | |
| Any positive | N/A | 12.7% (53/419) | 16.5% (65/394) | 30.7% (76/248) | |
a
Percentages may not add up to 100% because of rounding.
b
Any of the evaluated indoor allergen-specific IgE > 0.35 IU/ml.