TABLE 1.
Sociodemographic Characteristics of Study 1 and Study 2 Participants, by Case versus Control Status
| Characteristic | STUDY 1 | STUDY 2 | ||
|---|---|---|---|---|
|
| ||||
|
Cases (N = 22) N (%) |
Controls (N = 18) N (%) |
Cases (N = 24) N (%) |
Controls (N = 124) N (%) |
|
| Sex | ||||
| female | 7 (32) | 7 (39) | 9 (38) | 66 (53) |
| male | 15 (68) | 11 (61) | 15 (63) | 58 (47) |
| Age at Ascertainment, years | ||||
| 4–4.9 | 6 (27) | 6 (33) | -- | -- |
| 5–5.9 | 16 (73) | 12 (67) | 13 (54) | 40 (32) |
| 6–6.9 | -- | -- | 5 (21) | 33 (27) |
| 7–6.9 | -- | -- | 5 (21) | 29 (23) |
| 8–8.9 | -- | -- | 1 (4) | 21 (17) |
| ≥9 | -- | -- | 0 (0) | 1 (1) |
| Race/Ethnicity | ||||
| Hispanic Caucasian | -- | -- | 1 (4) | 4 (3) |
| Non-Hispanic Caucasian | 18 (82) | 15 (83) | 23 (96) | 114 (92) |
| Other or Mixed Race/Ethnicity | 4 (18) | 3 (17) | 0 (0) | 6 (5) |
| Maternal Education (at time of Delivery) | ||||
| ≤12yrs | -- | -- | 5 (21) | 18 (15) |
| 13–15yrs | -- | -- | 2 (8) | 24 (19) |
| 16+yrs | -- | -- | 17 (71) | 82 (66) |
| Socioeconomic Statusa | ||||
| I (High) | 5 (23) | 4 (22) | -- | -- |
| II | 12 (55) | 13 (72) | -- | -- |
| III–IV (Low) | 5 (23) | 1 (6) | -- | -- |
a
Hollingshead 4-factor index of social status:(Hollingshead, 1975) I=55–66; II=40–54; III=30–39; IV=20–29; V=8–19