Table 4.
Distribution of risk factors for decline in the stratification set
| Age range, yrs | ||||
|---|---|---|---|---|
| 6–12 | 13–17 | 18–24 | ≥25 | |
|
|
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| Sample size, n | 1,441 | 616 | 206 | 106 |
| FEV1 % predicted, n (%) | ||||
| 70 to <85 | 439 (30.5%) | 288 (46.8%) | 133 (64.6%) | 74 (69.8%) |
| 85 to <100 | 520 (36.1%) | 210 (34.1%) | 52 (25.2%) | 29 (27.4%) |
| ≥100 | 482 (33.4%) | 118 (19.2%) | 21 (10.2%) | 3 (2.8%) |
| Weight-for-age percentile, n (%) | ||||
| ≥25th | 803 (55.7%) | 369 (59.9%) | 120 (58.3%) | 76 (71.7%) |
| <25th | 637 (44.2%) | 246 (39.9%) | 85 (41.3%) | 30 (28.3%) |
| P. aeruginosa culture history in the past year, n (%) | ||||
| All Negative | 658 (45.7%) | 179 (29.1%) | 32 (15.5%) | 13 (12.3%) |
| Any Positive | 685 (47.5%) | 394 (64%) | 157 (76.2%) | 81 (76.4%) |
| IV exacerbations in the past year, n (%) | ||||
| 0 | 1001 (69.5%) | 385 (62.5%) | 93 (45.1%) | 50 (47.2%) |
| 1 | 274 (19%) | 125 (20.3%) | 53 (25.7%) | 30 (28.3%) |
| 2 | 95 (6.6%) | 51 (8.3%) | 33 (16%) | 17 (16%) |
| ≥3 | 71 (4.9%) | 55 (8.9%) | 27 (13.1%) | 9 (8.5%) |
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