Perceived health or self-rating subjective health was studied to identify its associated factors. A health questionnaire including the Todai Health Questionnaire (THI) was applied to 12, 630 inhabitants aged from 40 to 69 years. Respondent rate was 80.9%. Items other than THI are sex, age, medical history of chronic disease, treatment, spouse, job, academic carrier, and friends. A question "How is your health?" with five ordered response was used to assess the perceived health. The mean values of THI scale score of lie and aggression of poor (poor and very poor) perceived health were significantly lower than those of good (very good, good and moderate) perceived health. The mean values of other THI scale scores of poor perceived health were significantly higher than those of good perceived health. Spearman's rank correlation coefficient between perceived health score and THI scale scores were all statistically significant, but all the values were under 0.4. Discriminant analysis was conducted to predict good and poor perceived health using listed variables. Items of the largest absolute value of standardized discriminant coefficient were medical history of chronic disease, vague complaints and depression of THI. Correct identification rate by nineteen items was 82.9% in man and 80.5 in woman.
