Table 1.
Demographic Information
| HC (N=240) |
SBS 0–1 (N=92) |
SBS 2–4 (N=99) |
SBS 5–7 (N=98) |
SBS 8–9 (N=134) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Demographics | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Statistics | Findings |
| Age (yrs) | 37.5 | 12.4 | 35.8 | 13.7 | 34.7 | 11.5 | 35.8 | 12.6 | 36.0 | 12.0 | F(4, 658) = 1.04 | |
| Education (yrs) | 15.1 | 2.4 | 14.6 | 2.3 | 13.4 | 2.1 | 13.0 | 2.1 | 13.0 | 2.4 | F(4, 655) = 26.3a | HC, SBS 0–1 > SBS 2–4, SBS 5–7, SBS 8–9 |
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| N | % | N | % | N | % | N | % | |||||
|
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| Male | 115 | 47 | 31 | 33 | 31 | 31 | 46 | 46 | 92 | 68 | χ2(4)= 41.5a | SBS 8–9 >all(/br)HC>SBS 2–4 |
| Race | ||||||||||||
| Caucasian | 160 | 66 | 74 | 80 | 57 | 57 | 45 | 45 | 62 | 46 | χ2(4)= 39.3 | HC, SBS 0–1 > SBS 5–7, SBS 8–9(/br)SBS 0–1 >SBS2–4 |
| African American | 62 | 25 | 12 | 13 | 39 | 39 | 48 | 48 | 67 | 50 | χ2(4)= 51.1a | SBS 0–1 <all(/br)HC<SBS 5–7, SBS 8–9 |
| Other | 18 | 7 | 6 | 6 | 3 | 3 | 5 | 5 | 5 | 3 | χ2(4)= 3.9 | |
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| Clinical Variables | Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||||
|
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| Illness duration (yrs) | – | – | 17.1 | 12.4 | 15.8 | 11.7 | 16.6 | 12.6 | 14.1 | 11.2 | F (2, 401) = 1.38 | |
| Total | – | – | 53.7 | 14.4 | 60.6 | 16.1 | 64.5 | 14.9 | 66.8 | 16.6 | F (2, 411) = 13.7a | SBS 0–1 < SBS 2–4, SBS 5–7, SBS 8–9(/br)SBS 2–4 < SBS 8–9 |
| Positive | – | – | 12.6 | 4.3 | 15.3 | 5.4 | 17.1 | 5.0 | 17.2 | 5.5 | F (2, 413) = 17.5a | SBS 0–1 < SBS 2–4, SBS 5–7, SBS 8–9(/br)SBS 2–4 < SBS 8–9 |
| Negative | – | – | 12.3 | 4.3 | 13.6 | 4.6 | 14.9 | 4.23 | 17.1 | 6.1 | F (2, 413) = 18.5a | SBS 0–1, SBS 2–4, SBS 5–7 < SBS 8–9(/br)SBS 0–1 < SBS 5–7 |
| YMRS | – | – | 6.2 | 6.9 | 6.9 | 6.6 | 6.8 | 6.0 | 5.3 | 4.9 | F (2, 408) = 1.7 | |
| MADRS | – | – | 10.0 | 9.4 | 13.4 | 10.3 | 12.5 | 9.2 | 8.6 | 7.7 | F (2, 411) = 6.5a | SBS 2–4>SBS 0–1, SBS 8–9(/br)SBS 5–7>SBS 8–9 |
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| Medications | N | % | N | % | N | % | N | % | ||||
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| Antipsychotic | – | – | 62 | 67 | 75 | 75 | 90 | 91 | 126 | 94 | χ2(6)= 38.8a | SBS 0–1, SBS 2–4< SBS 5–7, SBS 8–9 |
| Lithium | – | – | 28 | 30 | 20 | 20 | 10 | 10 | 8 | 5 | χ2(6)= 31.2a | SBS 0–1, SBS 2–4> SBS 8–9(/br)SBS 0–1 >SBS 5–7 |
Demographic measures for the groups determined using the Shizo-Bipolar Scale. Fifteen subjects (5 from each psychosis group) did not have Schizo-Bipolar scores. Results of statistical tests of group differences on demographic measures are reported in the Statistics and Findings columns. PANSS= Positive and Negative Symptom Scale, YMRS=Young Mania Rating Scale, MADRS=Montgomery Asberg Depression Rating Scale
a
Statistical test with significant effects