Table 1 Selected characteristics of case and non-case children.
Variable | Special Education | Educational Attainment | ADHD | |||
|---|---|---|---|---|---|---|
N = 1538a | N = 1542b | N = 1535c | ||||
Cases | Non-Cases | Cases | Non-Cases | Cases | Non-Cases | |
N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
Male | 186 (66.9) | 592 (47.0) | 219 (66.8) | 562 (46.7) | 105 (74.5) | 673 (48.3) |
Female | 92 (33.1) | 668 (53.0) | 124 (36.2) | 637 (53.1) | 36 (25.5) | 721 (51.7) |
Birth Weight | ||||||
<2500 g | 8 (2.9) | 32 (2.5) | 12 (3.5) | 29 (2.5) | 3 (2.1) | 38 (2.7) |
>= 2500 g | 270 (97.1) | 1228 (97.5) | 331 (96.5) | 1170 (97.5) | 138 (97.9) | 1356 (97.3) |
Gestational Duration | ||||||
<37 Weeks | 15 (5.4) | 50 (4.0) | 14 (4.1) | 51 (4.3) | 8 (5.7) | 57 (4.1) |
>= 37 Weeks | 263 (94.6) | 1210 (96.0) | 329 (95.9) | 1148 (95.7) | 133 (94.3) | 1332 (95.9) |
Maternal Cigarette Smoking During Pregnancy | ||||||
Yes | 81 (29.1) | 331 (26.3) | 116 (33.8) | 296 (24.7) | 41 (29.1) | 370 (26.6) |
No | 194 (69.8) | 910 (72.2) | 220 (64.1) | 887 (74.0) | 99 (70.2) | 1002 (71.9) |
Missing | 3 (1.1) | 19 (1.5) | 7 (2.1) | 16 (1.3) | 1 (0.7) | 22 (1.6) |
Maternal Alcoholic Beverage Consumption During Pregnancy | ||||||
Yes | 99 (35.6) | 487 (38.7) | 111 (32.4) | 475 (39.6) | 55 (39.0) | 527 (37.8) |
No | 175 (62.9) | 750 (59.5) | 224 (65.3) | 703 (58.6) | 85 (60.2) | 839 (60.2) |
Missing | 4 (1.4) | 23 (1.8) | 8 (2.3) | 21 (1.8) | 1 (0.7) | 22 (1.6) |
Maternal Race | ||||||
White | 270 (97.1) | 1205 (95.6) | 327 (95.3) | 1152 (96.1) | 136 (96.5) | 1335 (95.8) |
Other | 8 (2.9) | 55 (4.4) | 16 (4.7) | 47 (3.9) | 5 (3.5) | 59 (4.2) |
Maternal Education | ||||||
<High School | 13 (4.7) | 39 (3.1) | 31 (9.0) | 23 (1.9) | 4 (2.8) | 48 (3.4) |
High School | 115 (41.4) | 435 (34.5) | 183 (53.3) | 362 (30.2) | 44 (31.2) | 505 (36.2) |
Some College | 71 (25.5) | 404 (32.0) | 82 (24.0) | 396 (33.0) | 39 (27.7) | 434 (31.1) |
4 Year College Grad | 79 (28.4) | 382 (30.3) | 47 (13.7) | 418 (34.9) | 54 (38.3) | 407 (29.2) |
Paternal Occupation | ||||||
Blue Collar | 94 (33.8) | 376 (29.8) | 114 (33.2) | 329 (27.4) | 39 (27.7) | 426 (30.6) |
White Collar | 118 (42.4) | 643 (51.0) | 143 (41.7) | 651 (54.3) | 71 (50.3) | 690 (49.5) |
Other | 63 (22.7) | 221 (17.5) | 83 (24.2) | 199 (16.6) | 30 (21.3) | 256 (18.4) |
Missing | 3 (1.1) | 20 (1.6) | 3 (0.9) | 20 (1.7) | 1 (0.7) | 22 (1.6) |