Table 1.
Demographic, SES and Baseline Clinical Measures by Age Group
| Age Group <6 | Age Group 6-12 | Age Group 13-18 | Group Statistical Difference (P<.05) | |
|---|---|---|---|---|
| N, total | 4806 | 2600 | 2489 | |
| Demographic characteristics | ||||
| Age, mean ± SD | 2.43 ± 1.86 | 9.48 ± 2.04 | 15.70 ± 1.70 | all |
| Sex, n (%) | NS | |||
| Male | 2435 (50.7%) | 1334 (51.3%) | 1309 (52.6%) | |
| Female | 2371 (49.3%) | 1266 (48.7%) | 1180 (47.4%) | |
| Ethnicity/race, n (%) | all | |||
| Non-Hispanic White | 4021 (83.7%) | 2315 (89.0%) | 2294 (92.2%) | |
| Non-Hispanic Black | 161 (3.3%) | 88 (3.4%) | 73 (2.9%) | |
| Hispanic | 403 (8.4%) | 131 (5.0%) | 100 (4.0%) | |
| Other | 198 (4.1%) | 64 (2.5%) | 21 (0.8%) | |
| Unknown | 23 (0.5%) | 2 (0.1%) | 1 (<0.1%) | |
| SES measures: | ||||
| MEA, n (%) | Age <6 vs. others | |||
| Less than high school grad | 185 (3.8%) | 71 (2.7%) | 59 (2.4%) | |
| High school grad or higher | 1606 (33.4%) | 949 (36.5%) | 701 (28.2%) | |
| Unknown † | 3015 (62.7%) | 1580 (60.8%) | 1729 (69.5%) | |
| MIZ, n (%) | NS | |||
| <$40,000 | 985 (20.5%) | 486 (18.7%) | 497 (20.0%) | |
| $40K to <$50k | 1250 (26.0%) | 749 (28.8%) | 628 (25.2%) | |
| $50k to <$60K | 842 (17.5%) | 446 (17.2%) | 464 (18.6%) | |
| ≥$60K | 1323 (27.5%) | 750 (28.8%) | 714 (28.7%) | |
| Unknown † | 406 (8.4%) | 169 (6.5%) | 186 (7.5%) | |
| MA n (%) | ||||
| Medicaid | 2259 (47.0%) | 1048 (40.3%) | 942 (37.8%) | Age <6 vs. others |
| Other | 2393 (49.8%) | 1450 (55.8%) | 1437 (57.7%) | |
| Unknown † | 154 (3.2%) | 102 (3.9%) | 110 (4.4%) | |
| Baseline Clinical Measures | ||||
| FEV1 % predicted, mean ± SD | NA | 94.4 ± 19.5 | 82.9 ± 21.8 | all |
| Weight-for-age percentile, mean ± SD | 44.0 ± 29.5 | 38.7 ± 28.2 | 38.3 ± 28.2 | Age <6 vs. others |
| Cough n (%) | all | |||
| None | 3289 (68.5%) | 971 (37.4%) | 599 (24.1%) | |
| Occasionally | 1277 (26.6%) | 1197 (46.1%) | 1099 (44.2%) | |
| Daily | 236 (4.9%) | 431 (16.6%) | 788 (31.7%) | |
| Sputum n (%) | all | |||
| None | 4514 (94.1) | 1836 (70.7%) | 1264 (50.8%) | |
| Occasionally | 244 (5.1%) | 590 (22.7%) | 784 (31.5%) | |
| Daily | 40 (0.8%) | 171 (6.6%) | 438 (17.6%) | |
| Wheezing n (%) | 12 (0.2%) | 5 (0.2%) | 22 (0.9%) | Age 13-18 vs. others |
| Crackles n (%) | 26 (0.5%) | 63 (2.4%) | 153 (6.1%) | all |
| Hemoptysis n (%) | 0 (0.0%) | 1 (<0.1%) | 11 (0.4%) | Age 13-18 vs. others |
| P. aeruginosa positive, n (%) | 1428 (33.5%) | 1336 (51.4%) | 1560 (70.1%) | all |
†
Unknown is not included in p-value comparisons