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Table 1 Activity of Daily Living Items Used to Derive Seeing, Hearing and Total Severity Indexes, Health Activity Limitation Survey, 1991

From: The relationship between sensory impairment and functional independence among elderly

ADL Item Score on Seeing Severity Index Score on Hearing Severity Index
Difficulty seeing ordinary newsprint with glasses or contact lenses if usually worn? No = 0 Yes, but able = 1 Yes but, completely unable = 2  
Difficulty clearly seeing the face of someone across a room with glasses or contact lenses if usually worn? No = 0 Yes, but able = 1 Yes but, completely unable = 2  
Difficulty hearing what is said in a conversation with one person?   No = 0 Yes, but able = 1 Yes but, completely unable = 2
Difficulty hearing what is said in a group conversation with at least three other people?   No = 0 Yes, but able = 1 Yes but, completely unable = 2
Able to hear what is said over the telephone?   Yes = 0 No = 1
Total Possible Score 4 5