Table 2.
Age-specific estimates of chronic disability prevalence in 1994 based on rates estimated from the 1982 and 1994 NLTCS
| Disability and age status | 1994 prevalence based on
|
|||
|---|---|---|---|---|
| 1982 rates, % | 1994 rates, % | Difference, % | t-value | |
| Nondisabled | ||||
| 65–74 | 85.9 (±0.33)* | 88.5 (±0.37) | 2.6 (±0.50)† | 5.3 |
| 75–84 | 68.1 (±0.56) | 73.1 (±0.47) | 5.0 (±0.74) | 6.8 |
| >85 | 34.8 (±0.94) | 40.2 (±0.88) | 5.4 (±1.29) | 4.2 |
| Only IADLs impaired | ||||
| 65–74 | 4.3 (±0.19) | 3.1 (±0.20) | −1.2 (±0.28) | −4.2 |
| 75–84 | 7.2 (±0.31) | 5.5 (±0.24) | −1.7 (±0.40) | −4.3 |
| >85 | 7.9 (±0.53) | 7.2 (±0.46) | −0.7 (±0.70) | −1.0 |
| ADL impaired or institutional | ||||
| 65–74 | 9.8 (±0.28) | 8.4 (±0.32) | −1.5 (±0.43) | −3.4 |
| 75–84 | 24.7 (±0.52) | 21.4 (±0.44) | −3.5 (±0.68) | −4.8 |
| >85 | 57.3 (±0.98) | 52.7 (±0.89) | −4.7 (±1.32) | −3.5 |
*
Confidence bounds for proportion based on its SE.
†
Confidence bounds of the difference in proportions based on its SE.