Figure 3From: Identification of early changes in specific symptoms that predict longer-term response to atypical antipsychotics in the treatment of patients with schizophrenia PPV and NPV using one- and two-branch decision tree models. Percentage of patients identified as not predictable as determined using decision tree rules, but with response defined by week of treatment. Abbreviations: NVP = negative predictive value; PPV = positive predictive value.Back to article page