Personality profiles of patients with duodenal ulcer.

Cluster analysis of personality profiles determined by the Sixteen Personality Factor Questionnaire separated 79 patients with duodenal ulcer into three homogeneous subgroups: 32 dependent and anxious patients, 31 neurotic and anxious patients, and 16 patients with a balanced personality. No significant differences among these three groups emerged for the variables of age, sex, duration of illness, fasting total serum pepsinogen, fasting serum pepsinogen group I, and number of cigarettes smoked per day, although there was a nonsignificant trend for both pepsinogen values to be higher in the patients with a balanced personality than in the other two groups. These results support the concept of heterogeneity of peptic ulcer disease.