PURPOSE
This retrospective chart review study was carried out in order to examine the frequency of delirium, and to identify the risk factors associated with the development of delirium in elderly patients with arthroplasty.
METHODS
Data were collected from medical records of patients who received arthroplasty during one and half year in a hospital. Three hundred sixty five patients were selected for the study. The onset of delirium was reviewed based on the result of psychological doctor's consultation or nurse's assessment with Confusion Assessment Method and delirium onset risk factors were examined. Data were analyzed with descriptive statistics, t-test, chi2-test, Fisher's exact test and logistic regression analysis.
RESULTS
Delirium occurred with 31 patients (8.5%) out of 365 patients who underwent arthroplasty. There were statistically significant differences between incidence of delirium and gender (chi2=6.11, p=.025), age (chi2=32.81, p<.001), hearing difficulty (chi2=8.08, p=.012), albumin level of preoperational day (t=-3.43, p<.001), albumin (t=-2.20, p=.028) and hemoglobin level (t=-2.83, p=.005) of operational day. Age and gender were the most significant predictive factors with regard to the incidence of delirium.
CONCLUSION
Through understanding of these results, nurses will be able to identify those patients who may be at risk for developing delirium in early stages.

PURPOSE
This correlational study was to examine the relationships between dementia knowledge, attitude, self-efficacy and preventive behavior of low income middled-aged women.
METHODS
The subjects for this study were 125 low income middle aged women living in I city. The data were collected using the questionnaires for dementia knowledge, attitude, self-efficacy and preventive behavior. The data analysis was done by descriptive statistics, t-test, ANOVA, Pearson product moment correlation and stepwise multiple regression analysis.
RESULTS
The mean of dementia knowledge was 13.96 out of 20, attitude was 43.98 out of 60, self-efficacy was 54.07 out of 75 and preventive behavior was 25.98 out of 36. The positive correlations were revealed between dementia knowledge (r=.458, p=.000), attitude (r=.498, p=.000), self-efficacy (r=.573, p=.000) and preventive behavior. The influencing factors for dementia preventive behavior were self-efficacy, belief in Buddhism and attitude which accounted for 42.5% of the total variance.
CONCLUSION
Dementia knowledge, attitude and self-efficacy were identified as variables that correlate dementia preventive behavior. Also, self-efficacy is the most influential factor affecting dementia preventive behavior. On the basis of these results, it is necessary for nurses to consider using dementia knowledge and mode of efficacy expectation in order to improve dementia preventive behavior.