Table 1.

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

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