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Comparisons of SSRI (the reference group) and AD classes indicate the difference between the two groups in ln σ̂. These estimates have been exponentiated, with a bln σ̂ less than 1 representing less variability than SSRI. NDRI indicates norepinephrine-dopamine reuptake inhibitor; NA, norepinephrinergic agent; SNRI, serotonin and norepinephrine reuptake inhibitor.
