| Total Population n (%) | Asthmatic at Age 7 n (%) | Not Asthmatic at Age 7 n (%) | P-value# |
n (%) | 617 (100) | 95 (16)a | 494 (84)a | Â |
Sex | Â | Â | Â | 0.18 |
 Male | 338 (55) | 58 (61) | 265 (54) |  |
 Female | 279 (45) | 37 (39) | 229 (46) |  |
Race | Â | Â | Â | 0.001 |
 White | 487 (79) | 63 (66) | 401 (81) |  |
 Non-White | 130 (21) | 32 (34) | 93 (19) |  |
Household Income at Age 7 |  |  |  |  < 0.001 |
 Under $10 K | 49 (8) | 12 (13) | 30 (6) |  |
 $10 K to under $20 K | 44 (7) | 11 (12) | 29 (6) |  |
 $20 K to under $30 K | 51 (8) | 16 (17) | 22 (4) |  |
 $30 K to under $40 K | 49 (8) | 6 (6) | 34 (7) |  |
 $40 K to under $50 K | 56 (9) | 7 (7) | 31 (6) |  |
 $50 K to under $70 K | 109 (18) | 12 (13) | 70 (14) |  |
 $70 K to under $90 K | 95 (15) | 13 (14) | 85 (17) |  |
 $90 to under $110 K | 76 (12) | 4 (4) | 78 (16) |  |
 Over $110 K | 63 (10) | 13 (14) | 109 (22) |  |
 Did not respond | 25 (4) | 1 (1) | 6 (1) |  |
Allergic Sensitivity at Age 7 | Â | Â | Â | Â |
 Yes | 258 (42) | 31 (33) | 116 (23) | 0.17 |
 No | 346 (56) | 25 (26) | 139 (28) |  |
 Missing | 13 (2) | 39 (41) | 239 (48) |  |
 | M (SD) | Asthmatic Mean | Non-Asthmatic Mean | P-value+ |
ECAT (µg/m3) | ||||
 Birth | 0.40 (1.70) | 0.42 | 0.40 | 0.08 |
 Age 7 (missing = 6) | 0.36 (0.11) | 0.37 | 0.36 | 0.22 |
 Across Childhood | 0.38 (0.10) | 0.40 | 0.38 | 0.06 |
Community Deprivation Index | ||||
 Birth (missing = 2) | 0.46 (0.02) | 0.52 | 0.45 |  < 0.001 |
 Age 7 | 0.33 (0.14) | 0.38 | 0.33 | 0.001 |
 Across Childhood | 0.40 (0.14) | 0.46 | 0.39 |  < 0.001 |