| PSA | Itching VAS | PGPA | ||||
---|---|---|---|---|---|---|---|
Patient Population | n | Frequency Mean | Severity Mean | n | Mean | n | Mean |
High-Need Cohort | Â | Â | Â | Â | Â | Â | Â |
   Placebo | 184 | 2.1 | 1.9 | 184 | 0.4 | 182 | 0.4 |
   Efalizumab | 340 | 5.8* | 6.3* | 339 | 2.4* | 341 | 2.8* |
Total Population | Â | Â | Â | Â | Â | Â | Â |
   Placebo | 262 | 2.0 | 1.9 | 261 | 0.6 | 261 | 0.4 |
   Efalizumab | 527 | 5.7* | 6.2* | 526 | 2.5* | 528 | 2.8* |