For the purpose of promotion of mental health in the rural elderlies, we surveyed 506 elderlies by means of Mini-Mental State Examination(MMSE) for evaluation of cognitive function. We assesed degree of cognitive function impairments and association between cognitive function and socio-environmental conditions.
The results were as follows：
1. Proportion of severe and mild cognitive function impairments were increased as incresing age, and mean scores of MMSE became decreased significantly among them(P<0.001).
2. In female, rates of severe and mild cognitive function impairment were high and mean scores of MMSE were significantly lower than male(P<0.001).
3. In widow group, proportion of severe and mild cognitive function impairment were high and mean scores of MMSE were significantly low(P<0.001).
4. As decreasing familly numbers, proportion of severe and mild cognitive function impairment became high and mean scores of MMSE were significantly low(P<0.01).
5. In physical handicaped group, proportions of severe and mild cognitive function impairment were high and mean scores of MMSE were significantly low(P<0.001).
6. In low scores of physical ability group, proportions of severe and mild cognitive function impairment were high and mean scores of MMES were significantly low(P<0.001).
7. Most item-scores of MMSE were significantly correlated.
8. In stepwised multiple regression analysis, age, existence of physical disorder, sex and scores of physical ability were selected highly correlated variables and power of explanation was 0.1528.
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