marginal significancep = 0.092
In separate linear regression analyses on the effects of typical and atypical antipsychotic medication, the annual reduction in brain volume was predicted by exposure to both types of antipsychotic medication with a high level of significance for atypical antipsychotic medication (atypical beta = −0.54, t = −3.53, p = 0.001) and a marginal significance for typical antipsychotic medication (typical beta = −0.298, t = −1.74, p = 0.092).