Table 1 Demographic characteristics of participants
From: Epigenetic regulation of AXL and risk of childhood asthma symptoms
| Â | Primary study population (NÂ =Â 246) | Replication population (NÂ =Â 1038) | p valuea |
|---|---|---|---|
Male sex, n (%) | 98 (39.8) | 541 (52.1) | 0.0005 |
Ethnicity, n (%) | Â | Â | 0.05 |
 Hispanic | 147 (59.8) | 531 (51.3) |  |
 Non-Hispanic White | 72 (29.3) | 381 (36.8) |  |
 Asian/Black/Other | 27 (11.0) | 124 (12.0) |  |
Ever MD-diagnosed asthma, n (%) | 39 (15.9) | 295 (28.4) | < 0.0001 |
Ever wheezing, n (%) | 66 (26.8) | 455 (43.8) | < 0.0001 |
Wheezing in the previous 12Â months, n (%) | 37 (15.0) | 250 (24.1) | 0.001 |
Bronchitic symptoms in the previous 12Â months, n (%) | 40 (16.3) | 229 (22.1) | 0.04 |
Parental education, n (%) | Â | Â | 0.002 |
 High school or less | 89 (36.6) | 316 (31.3) |  |
 Some college | 76 (31.3) | 438 (43.5) |  |
 Finished college/some graduate school | 78 (32.1) | 254 (25.2) |  |
Age years, mean (sd) | 6.4 (0.6) | 7.2 (1.3) | < 0.0001 |
Gestational age days, mean (sd) | 277.5 (11.0) | 272.7 (11.3) | < 0.0001 |