[Studies of psychiatric symptoms and personality traits in the 90+ years population].

Depressive symptoms and personality traits 90+ years population were examined. Data were obtained from 33 aged people (mean 93 +/- 3.2 years old; range 90-105 years old) using the Hamilton Rating Scale for depression and a questionnaire for the evaluation of type A personality trait (devised by Dr. Maeda). Scores of > 11 in the Hamilton Rating Scale for depression were considered indicative of depression. This score was found in 39% of cases. There are four types of depressive symptoms among the 90+ years population: sleep disturbance and somatic complain type; depressive mood type; hypochodrical type; reference of ideas and obsessive-compulsive type. The usual distributions of symptoms is 43, 29, 21 and 7% respectively. According to the questionnaire for type A personality trait among the 33 cases, there were more people with type A personality (n = 18; 56%) than there were those with type B (n = 15; 44%). Of the total number of cases studied, there was a tendency high scores to be achieved items characteristic of type A personality, such as a thorough native, self-confidence and precision. On the other hand, there are also tendencies for flexibilities and "going-my-way" traints in the 90+ year population. There is a significant correlation between scores in Hamilton Rating Scale for depression and scores in the type A personality questionnaire.