Skip to main content
. Author manuscript; available in PMC: 2009 Dec 30.
Published in final edited form as: J Am Geriatr Soc. 2008 Jan 5;56(3):436–443. doi: 10.1111/j.1532-5415.2007.01603.x

Table 2.

Number and Percentage of Participants with the Occurrence of a Disability Subtype According to the Number of Available Intervals*

Number of Intervals with an Incident Disability Subtype
None One Two Three Four Five
Number of
Available Intervals
N No. (%) No. (%) No. (%) No. (%) No. (%) No. (%)
1 131 37 (28.2) 94 (71.8)
2 96 25 (26.0) 39 (40.6) 32 (33.3)
3 93 9 (9.7) 45 (48.4) 24 (25.8) 15 (16.1)
4 104 19 (18.3) 35 (33.7) 27 (26.0) 20 (19.2) 3 (2.9)
5 297 153 (51.5) 79 (26.6) 37 (12.5) 18 (6.1) 8 (2.7) 2 (0.7)
*

Of the 754 participants, 33 (4.4%) contributed no intervals, largely because of death within the first 12 months of follow-up. Of the 721 participants who contributed at least one interval, 243 (33.5%) had no disability during the follow-up period.

The disability subtypes included transient, short-term, long-term, recurrent, and unstable, as described in the text. Because disability at the start of an interval was an exclusion criterion, the disability subtypes represent incident cases.