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V. Summary and Conclusions
John R. Ashford, John A. Carpenter
The design, analysis and conclusions of the series of experiments by Carpenter et al., Ashford and Cobby, and Cobby and Ashford [J. Stud. Alc., Suppl. No. 7, pp. 54-176, 1975] are reviewed. Mathematical models of the joint action of drugs were developed and data obtained to test the models by studying the action of alcohol and meprobamate singly and in combination in human subjects. The data proved to be too limited in the range of drug concentrations in the blood necessary to identify the single most appropriate model. Carpenter et al. analyzed the data by analysis of variance, which involves assumptions about the structure of the observation and the form of the distribution of the error terms. The analyses of Ashford and Cobby and Cobby and Ashford used the mathematical models, which represented pharmacological and physiological actions of the drugs. The majority of the results of the two analyses agreed; however in Experiment V Carpenter et al. combined drugs, doses and blood samples in one analysis and found a significant influence of meprobamate dose on blood alcohol concentration (
