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Edward J. Callahan, PhD; Peter N. Alevizos, PhD; James R. Teigen, MSW; Hilda Newman, MD; Michael D. Campbell, MA

Arch Gen Psychiatry. 1975;32(10):1285-1290.

Abstract
• After an 11-day base line of behavioral observations, 24 chronic female schizophrenics were assigned to two groups matched for alertness. In the first treatment phase, the administration of phenothiazine medication of one group was switched from a multiple-dose schedule (three to four times per day) to a single daily administration, while the total dosage per day was held constant. The second group continued on a multiple administration schedule for 11 days and then was switched to a single daily dosage.

A multivariate analysis of variance showed that there was no overall effect (positive or negative) due to the schedule change; however, preplanned t tests showed transitory decreases in nonfunctional behavior. The results are discussed in terms of implications for the administration of phenothiazines and the experimental analysis of drug effects.

Author Affiliations
From the Camarillo State Hospital (Drs Callahan, Alevizos, and Newman, and Messrs Teigen and Campbell); and the Department of Psychiatry, UCLA School of Medicine (Drs Callahan and Alevizos).; The views of the authors do not necessarily represent those of the California State Department of Health or the regents of the University of California.

Footnotes
Accepted for publication Dec 5, 1974.

Reprint requests to the Camarillo-Neuropsychiatric Institute Research Program, Box A, Camarillo, CA 93010 (Dr Callahan).

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