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.