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Assessment of home-based activities (AHA) : development, reliability and validity

Other Titles
 Assessment of home-based activities (AHA) 개발 및 신뢰도 타당도 연구 
Issue Date
Dept. of Occupational Therapy/박사
The aims of this study were to 1) develop the Assessment of Home-based Activities (AHA) that can assess the elderly’s performance of daily activities at the home environment in three areas of independence, difficulty and safety, and 2) verify its reliability and validity. To develop the AHA, a series of steps was followed: collection of the list of activities, selection of the list of activities, finalization of the list of activities, and determination of the level of scale and scoring method. Then, to verify its reliability and validity, an internal consistency, test-retest reliability, convergent validity and discriminant validity were analyzed. Of them, to calculate the convergent validity, correlations between each activity of the AHA and Korean Activities of Daily Living and between each activity of the AHA and Korean-Instrumental Activities of Daily Living were examined. To test the discriminant validity, the performance of daily activities between a group of general elderly and stroke elderly was compared. During the development course, 38 daily activities were collected, which were subsequently narrowed down to 26 activities through the three rounds of selection. In the selection rounds, 10 experts and 145 elderly people participated in a survey or panel meeting on conformance or importance of the 38 each activity. The independence area was determined on a 3-point scale, while the difficulty and safety area was determined on a 4-point scale. The scoring method was determined on a Likert method of summated rating which total score was calculated by adding score of each activity. The internal consistency (Cronbach’s α) and test-retest reliability (intraclass correlation coefficient) was a range of .91~.98 and .78~.86. The convergent validity showed that the correlations of all sets of two activities with similar name or features were statistically significant (p<.01). The discriminant validity turned out that the general elderly people performed daily activities at higher level than stroke elderly in all areas (p<.001). The AHA is Korea’s first instrument that can assess elderly people’s performance of daily activities in the home environment, and the instrument has a high reliability and validity. Therefore, the AHA is expected to be useful in planning and implementing interventions for elderly people in the field of rehabilitation containing the occupational therapy.
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