Table 1. Sample Characteristics.
| Non-Anxious | All Anxious | Generalized Anxiety † | Separation Anxiety † | Social Phobia † | ||
|---|---|---|---|---|---|---|
| (N = 23) | (N = 22) | (N = 15) | (N = 10) | (N = 11) | ||
| Demographic Variables | African American | 12 | 10 | 8 | 6 | 3 |
| Female | 13 | 16 | 12 | 7 | 8 | |
| Right Handed | 16 | 18 | 14 | 7 | 8 | |
| Federal income below federal poverty line | 4 | 6 | 5 | 5 | 2 | |
| Age at Scan a | 7.4(0.94) | 6.72(1)* | 6.72(1.02)* | 6.87(1.28) | 6.5(0.86)* | |
| IQ a | 104.5(14.03) | 103.86(10.82) | 103.53(11.51) | 103.2(10.63) | 106.18(9.54) | |
| Impairment †† (range: 0–10) a | 0.74(1.09) | 3.5(2.35)* | 3.93(2.66)* | 3.8(2.62)* | 3.27(1.68)* | |
| Preschool emotional symptoms (range: 0–9) a | 2.17(1.99) | 6.54(2.91)* | 7.27(3.13)* | 8.4(2.91)* | 5.82(2.4)* | |
| School-Age emotional symptoms (range 0–14) a | 2.43(1.95) | 4.14(3.38)* | 4.67(3.89)* | 4.8(4.39)* | 2.91(1.87) | |
| Preschool Comorbidity | No disorder | 20 | - | - | - | - |
| Generalized Anxiety Only | - | 6 | 6 | - | - | |
| Separation Anxiety Only | - | 1 | - | 1 | - | |
| Social Phobia Only | - | 3 | - | - | 3 | |
| Generalized Anxiety + Separation Anxiety | - | 4 | 4 | 4 | - | |
| Generalized Anxiety + Social Phobia | - | 3 | 3 | - | 3 | |
| Separation Anxiety + Social Phobia | - | 3 | - | 3 | 3 | |
| All three anxiety disorders | - | 2 | 2 | 2 | 2 | |
| Depression | 1 | 3 | 3 | 1 | 1 | |
| Other Diagnoses | 2 | 10 | 9 | 5 | 4 | |
| School-Age Diagnosis | Anxiety Disorder(s) | 4 | 11 | 6 | 5 | 6 |
| No Anxiety Disorder | 19 | 11 | 9 | 5 | 5 | |
| Other Diagnoses | 1 | 3 | 2 | 3 | 1 | |
Notes: Other diagnoses include conduct disorder, oppositional defiant disorder, and ADHD.
*Significant difference from non-anxious children at p<0.05;
aThe values in these columns represent average (standard deviation);
†These are not mutually exclusive groups;
††This represents the level to which psychiatric symptoms interfere with everyday functioning.