Table 1.
| Variable/Group | CCS (1) n=509 |
Proband (2) n=305 |
Parent Relative (3) n=232 |
Sibling Relative (4) n=449 |
Overall Group Differences4 | Post-Hoc Group Comparisons5 |
|---|---|---|---|---|---|---|
| Age3 (n =1495) | 36.2 (12.6) | 34.9 (11.2) | 57.0 (6.2) | 37.1 (11.8) | F = 224.7, p < 0.001 | 1,2,4<3 |
| Gender N (% Male) (n =1495) | 217 (42.6%) | 227 (74.4%) | 98 (42.2%) | 194 (43.2%) | X2 = 97.38, p < 0.001 | 1,3,4<2 |
| Personal3 Education (n =1482) | 15.4 (2.3) | 13.5 (2.1) | 15.4 (2.7) | 15.3 (2.5) | F = 48.2, p < 0.001 | 2<1,3,4 |
| Parent Education6 (n = 1439) | 14.1 (3.0) | 14.7 (3.2) | 11.9 (3.2) | 14.6 (3.2) | F = 41.2, p < 0.001 | 3<1<2,4 |
| Handedness (Right) (n = 1427) | 444 (89.1%) | 247 (86.4%) | 198 (92.1%) | 379 (88.6%) | X2 = 6.40, p = 0.380) | NS |
| WRAT3 Reading Standard Score (n = 1495) | 107.1 (10.6) | 101.9 (117) | 105.1 (115) | 105.7 (10.6) | F = 14.6, p < 0.001 | 2<3,4<1 |
| Lifetime Mood Disorders (%) (n =1495) | 58 (11.4%) | 143 (46.9%) | 58 (25.0%) | 88 (19.6%) | X2 = 139.5 p < 0.001 | 1<4<3<2 |
| Lifetime Substance Abuse Disorders (%) (n=1495) | 45 (8.8%) | 101 (33.1%) | 18 (7.8%) | 88 (19.6%) | X2 = 96.9 p < 0.001 | 1,3<4<2 |
Expressed as means (± standard deviations) for all measures except gender, handedness, lifetime rates of mood disorders and lifetime rates of substance abuse disorders, which are expressed as frequencies with percentages in parentheses.
Group n’s based on the full sample of 1495 subjects. Group n’s vary slightly for demographic variables with fewer total observations, as listed in Table
Unequal variances between groups based on Levine’s test; post-hoc tests based on Tamhanes.
One-way ANOVAs for continuous variables; Gender, Handedness, Mood Disorders and Substance Abuse Disorders are Chi-Square.
Age and education comparisons showed unequal variances; post-hoc tests are based on Tamhanes. All other group comparisons were least square means.
Parent Education is based on the mean of both parents’ highest educational level when both are available; otherwise, it is based on the one for whom information is available.