Table 1. Demographics for study population of Puerto Rican children.
| Bronchodilator responders | Bronchodilator non-responders | Pa | ||
| Sample size, N | 318 | 340 | --- | |
| Sex, % female | 40% | 44% | .25c | |
| Age, yrs, mean (SE) | 11.7 (.17) | 12.0 (.15) | .04b | |
| Baseline lung function, median (SE) | 81.28 (.87) | 91.03 (.90) | 4.08 x 10-15 b | |
| Obese | non-obese | 210 | 230 | .72 |
| obese | 108 | 110 | ||
| SES | low | 96 | 106 | .65 |
| medium | 66 | 74 | ||
| high | 156 | 160 | ||
| PM2.5 | <median | 146 | 185 | .04 |
| ≥median | 172 | 155 | ||
| EOD | none = 0 | 277 | 304 | .43 |
| yes ≥ 1 | 41 | 36 | ||
| Global ancestry, % mean (SE) | AFR | 23% (.007) | 22% (.006) | .49b |
| NAT | 10% (.002) | 11% (.003) | .26b | |
| EUR | 67% (.007) | 67% (.006) | .67b | |
SES, socioeconomic status; PM2.5, particulate matter <2.5 microns in diameter; EOD, perceived experience of discrimination; EUR, European ancestry; NAT, Native American ancestry; AFR, African Ancestry; SE, standard error.
a. significant associations. Ps were generated from the Chi-square test unless otherwise indicated.
b. P generated from the Wilcoxon Rank Sum test.
c. P generated from the difference in proportions test.