TABLE 1—
Low Income | Middle Income | |||
Environmental Risk | Mean (SD) | Percent at Risk | Mean (SD) | Percent at Risk |
Crowding (people/room) | .69 (.21) | 18 | .50 (.12) | 8 |
Housing problems (0–2) | .71 (.30) | 21 | .42 (.20) | 1 |
Noise (Leq dBA) | 64.97 (7.18) | 25 | 61.45 (7.41) | 9 |
Cumulative environmental risks | ||||
0 | 53 | 86 | ||
1 | 31 | 11 | ||
≥ 2 | 16 | 3 | ||
Level of cumulative risk exposure (SD) | .66 (.75) | .18 (.45) |
Note. Environmental risk is defined categorically (0, 1) as exposure to > 1 SD above the mean for the entire sample for each respective risk factor (crowding, noise, housing quality). Cumulative environmental risk is the sum (0–3) of these 3 environmental risk factors. Because of the small number of children exposed to 2 environmental risk factors, exposure to 2 and 3 environmental risks is collapsed into 1 group (≥ 2).