Table 3.13 Data for Exercise 3.14 on Psychiatric Diagnoses Diagnosis Drugs No Drugs Schizophrenia 105 Affective disorder 12 Neurosis 18 19 Personality disorder 47 52 Special symptoms 0 13 Source: Reprinted with permission from E. Helmes and G. C. Fekken, J. Clin. Psychol. 42: 569-576, 1986. 3.14 Table 3.13 classifies a sample of psychiatric patients by their diagnosis and by whether their treatment prescribed drugs. Partition chi-squared into three compo- ments to describe differences and similarities among the diagnoses, by comparing (i) the first two rows, (ii) the third and fourth rows, and (iii) the last row to the first and second rows combined and the third and fourth rows combined