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Table 4 Frequencies of pituitary tumor according to antipsychotic treatment

From: Potential bias in testing for hyperprolactinemia and pituitary tumors in risperidone-treated patients: a claims-based study

  Clozapine Risperidone Olanzapine Quetiapine Ziprasidone Haloperidol Perphenazine Other typicals
Number of treatment episodes 2,039 63,878 56,138 36,857 7,183 10,743 2,956 18,132
Pituitary tumor (all types), %:         
Unadjusted* 0.25 0.26 0.13 0.13 0.18 0.15 0.03 0.24
Adjusted for antipsychotic treatment duration† 0.19 0.30 0.16 0.16 0.30 0.18 0.04 0.30
  1. *Because of rounding, these percentages may differ from the sum of percentages in Table 1.
  2. † Unadjusted percentages were raised or lowered to reflect 12-month treatment duration.