Table 4.

Frequency and Reliability of Accommodations for Self-Care or Mobility Activities: Summary Measures and Hierarchical Classification Schemes^a

	Percentage		Percent agree	Kappa	95% Confidence interval
	Initial interview	Reinterview
Summary measures
In the last month ever used a device for…
Any self-care activity	46.0	46.0	89.2	0.78	0.67–0.90
Any mobility activity	26.1	28.8	95.5	0.89	0.79–0.98
Any self-care or mobility activity	51.4	53.2	89.2	0.78	0.67–0.90
In the last month ever got help with…
Any self-care activity	13.5	11.7	92.8	0.67	0.46–0.88
Any mobility activity	17.1	13.5	91.0	0.65	0.46–0.85
Any self-care or mobility activity	23.4	18.0	87.4	0.62	0.44–0.80
Compared to a year ago, did activity less often
Any self-care or mobility activity	23.4	24.3	82.9	0.53	0.34–0.72
Hierarchical classification
Scheme I
No accommodation	46.0	46.9	77.5	0.65	0.59–0.79
Use of devices only	30.6	35.1
Receipt of any assistance	23.4	18.0
Scheme II
No accommodation	37.8	43.2	73.0	0.58	0.52–0.65
Use of devices or activity reduction only	38.7	38.7
Receipt of any assistance	23.4	18.0
Scheme III
No accommodation	37.8	43.2	66.7	0.53	0.47–0.66
Use of devices only	26.1	22.5
Activity reduction but no assistance	12.6	16.2
Receipt of any assistance	23.4	18.0

^aReinterview sample (n = 111)