Table 1.
Displays the Sociodemographic and Clinical Characteristics of the GROUP Study Sample
| PatientsP (n = 905) |
SiblingsS (n = 966) |
ControlsC (n = 544) |
Statistics** | |
|---|---|---|---|---|
| Female (n, [%]) | 198 (21.88) | 526 (54.45) | 301 (55.33) | P<S,C |
| Age (mean, [sd]) | 27.74 (7.47) | 28.61 (7.77) | 31.26 (10.21) | P<S<C |
| IQ (mean, [sd]) | 94.74 (16.26) | 102.88 (15.60) | 110.11 (15.14) | P<S<C |
| White (n, [%]) | 673 (78.81) | 780 (83.60) | 492 (92.83) | P<S<C |
| Antipsychotics yes (n, %) | 874 (99.5) | |||
| Benton face recognition (mean, [sd]) | 22.75 (2.32) | 23.22 (2.15) | 23.19 (2.02) | P<S,C |
| Social Functioning (mean, [sd])* | 112.43 (9.42) | 122.20 (6.70) | 123.94 (5.63) | P<S<C |
| Interpersonal Score | 124.47 (19.53) | 138.48 (12.69) | 140.74 (10.38) | P<S<C |
| Prosocial activities | 113.1 (13.88) | 120.95 (11.58) | 123.39 (10.12) | P<S<C |
| DFAR (mean, [sd]) | 68.30 (10.75) | 72.47 (9.27) | 73.35 (9.18) | P<S,C |
| DFAR neutral | 77.92 (17.29) | 81.71 (14.81) | 82.41 (14.42) | P<S,C |
| DFAR happy | 86.85 (12.69) | 88.11 (10.63) | 87.45 (11.02) | P<S |
| DFAR fearful | 48.27 (20.24) | 53.04 (19.20) | 54.78 (18.38) | P<S,C |
| DFAR angry | 63.95 (21.02) | 70.34 (19.27) | 72.05 (18.48) | P<S,C |
| Hinting Task (mean, [sd]) | 17.54 (2.78) | 18.87 (1.62) | 19.13 (1.26) | P<S<C |
| PANSS positive (mean, [sd]) | 1.81 (.76) | |||
| PANSS negative (mean, [sd]) | 2.03 (.87) | |||
| PANSS general (mean, [sd]) | 1.75 (.52) | |||
| Age of first psychosis (mean, [sd]) | 23.31 (6.95) | |||
| Illness duration in yrs. (mean, [sd]) | 4.62 (4.50) |
Note: *measured at 3-year follow-up, ** differences significant at .05. DFAR, degraded facial affect recognition; IQ, intelligence quotient; PANSS, Positive and Negative Syndrome Scale; GROUP, Genetic Risk and Outcome of Psychosis.