Table 2.
Severity of Negative Symptoms in Patients With and Without PTSD
| SZ − PTSD |
SZ + PTSD |
F | P | |||
| Mean | SD | Mean | SD | |||
| Current PTSD | ||||||
| SDS blunted affect | 1.47 | 1.28 | 1.07 | 1.38 | 1.05 | .31 |
| SDS emotional range | 0.85 | 1.16 | 0.36 | 1.08 | 2.10 | .15 |
| SDS poverty of speech | 0.78 | 1.18 | 0.71 | 1.43 | 0.03 | .86 |
| SDS curbed interests | 0.98 | 1.19 | 0.93 | 1.26 | 0.22 | .88 |
| SDS sense of purpose | 1.11 | 1.33 | 1.14 | 1.26 | 0.36 | .55 |
| SDS social drive | 1.16 | 1.28 | 0.93 | 1.23 | 0.01 | .93 |
| SANS global affective flattening | 2.35 | 1.56 | 1.43 | 1.28 | 4.09 | .05 |
| SANS global alogia | 1.82 | 1.38 | 1.21 | 1.57 | 2.00 | .16 |
| SANS global avolition | 1.93 | 1.46 | 1.71 | 1.43 | 0.24 | .63 |
| SANS global anhedonia-asociality | 2.09 | 1.51 | 2.21 | 1.67 | 0.07 | .79 |
| BPRS emotional withdrawal | 2.64 | 1.86 | 2.36 | 2.09 | 0.24 | .63 |
| BPRS motor retardation | 2.05 | 1.52 | 2.00 | 1.66 | 0.01 | .91 |
| BPRS blunted affect | 3.25 | 2.06 | 2.29 | 1.97 | 2.50 | .11 |
| Lifetime PTSD | ||||||
| SDS blunted affect | 1.72 | 1.27 | 0.97 | 1.24 | 6.00 | .02 |
| SDS emotional range | 1.05 | 1.27 | 0.37 | 0.85 | 6.43 | .01 |
| SDS poverty of speech | 0.82 | 1.18 | 0.70 | 1.29 | 0.15 | .69 |
| SDS curbed interests | 1.13 | 1.28 | 0.77 | 1.07 | 1.55 | .22 |
| SDS sense of purpose | 1.31 | 1.35 | 0.87 | 1.14 | 5.70 | .02 |
| SDS social drive | 1.44 | 1.42 | 0.70 | 1.00 | 2.09 | .15 |
| SANS global affective flattening | 2.62 | 1.52 | 1.57 | 1.38 | 8.64 | <.001 |
| SANS global alogia | 1.85 | 1.44 | 1.50 | 1.43 | 0.98 | .33 |
| SANS global avolition | 1.97 | 1.60 | 1.77 | 1.25 | 0.34 | .56 |
| SANS global anhedonia-asociality | 2.33 | 1.54 | 1.83 | 1.48 | 1.83 | .18 |
| BPRS emotional withdrawal | 2.90 | 1.94 | 2.17 | 1.80 | 2.55 | .11 |
| BPRS motor retardation | 2.21 | 1.50 | 1.83 | 1.57 | 0.19 | .32 |
| BPRS blunted affect | 3.62 | 2.10 | 2.33 | 1.83 | 7.08 | .01 |