Table 1.
Characteristics of 3,021 study children from the three studies at baseline
| Elementary School |
Middle School |
Pediatric Practice |
|
|---|---|---|---|
| (N = 833) | (N = 1,292) | (N = 896) | |
| Child is in control group | 418 (50) | 408 (32) | 464 (52) |
| Age, mean (SD) | 8.85 (1.29) | 11.61 (0.63) | 7.69 (2.94) |
| Male | 441 (53) | 671 (52) | 584 (65) |
| African American | 810 (97) | 1,197 (93) | 106 (12) |
| Annual household income | |||
| ≤$10,000 | 230 (28) | 147 (11) | 42 (5) |
| $10,001 ∼ $40,000 | 321 (39) | 602 (47) | 218 (24) |
| >$40,000 | 216 (26) | 149 (12) | 577 (64) |
| Asthma severity | |||
| Intermittent | 300 (36) | 613 (47) | 535 (60) |
| Mild persistent | 147 (18) | 324 (25) | 185 (21) |
| Moderate persistent | 159 (19) | 210 (16) | 122 (14) |
| Severe persistent | 227 (27) | 142 (11) | 51 (6) |
| Doctor diagnosed | 486 (58) | 585 (45) | 896 (100) |
| Use of spacer with inhaler* | 90 (11) | 503 (39) | 442 (49) |
| Use of antiinflammatory medications† | 139 (17) | 191 (15)‡ | 641 (72) |
| Use of bronchodilator | 360 (43) | 491 (38)‡ | 268 (30) |
| Use of antihistamine | 160 (19) | 82 (6) | 310 (35) |
Data are presented as n (%) except as otherwise noted. Note that the percentages do not sum to one because of missing observations.
*
Near 49 and 29% of parents did not report whether the child used a spacer in the Elementary School and the Middle School data, respectively.
†
Antiinflammatory medications include any prescribed antiinflammatory medications, including oral steroids and leukotriene modifiers.
‡
The middle school data had 27% missing on antiinflammatory and bronchodilator uses.