TABLE 2.
PEDIATRIC STUDY POPULATION IN 1992, CLINICAL TRIAL PARTICIPANTS COMPARED WITH NONPARTICIPANTS
| Pediatric
|
|||
|---|---|---|---|
| Characteristic | Trial Participants | Trial Nonparticipants | p |
| n | 1,587 | 4,221 | |
| Age, mean (± SD) | 10.7 (3.3) | 10.7 (3.3) | 0.66 |
| Sex, n (% female) | 764 (48.1) | 1,974 (46.8) | 0.35 |
| Nonwhite, n (%) | 34 (2.1) | 164 (3.9) | 0.001 |
| Commercial health insurance, n (%) | 919 (58.0) | 2,216 (52.6) | < 0.001 |
| Mean height percentile (SD) | 32.0% (26) | 31.8% (26) | 0.76 |
| Median weight percentile (interquartile range) | 25.0% (8,52) | 26.0% (9,52) | 0.26 |
| FEV1, L, mean (± SD) | 1.50 (0.66) | 1.64 (0.74) | < 0.001 |
| FEV1% predicted, mean (± SD) | 77.5% (24.2) | 83.6% (22.7) | < 0.001 |
| FVC, L, mean (± SD) | 1.94 (0.84) | 2.07 (0.92) | < 0.001 |
| FVC % predicted, mean (± SD) | 87.8% (21.1) | 91.7% (20.1) | < 0.001 |
| Median annual outpatient visits in 1992 (interquartile range) | 5 (3–9) | 4 (2–5) | < 0.001 |
Total population: n = 5,808.