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  • A standardized questionnaire developed by Pfeiffer et al in 1982 and adapted by National Alzheimer\'s Coordinating Center (NACC), which is used to measure instrumental activities of daily living such as preparing meals and managing personal finances in older adults with dementia. The questionnaire contains 10 items. For each activity, five levels of scores are specified: \'not applicable\' (scored 8), \'normal\' (scored 0), \'has difficulty, but does by self\' (scored 1), \'requires assistance\' (scored 2), and \'dependent\' (scored 3).
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