Table 2.
Factors |
Correlation with Total | Alpha after item removal | ||||
---|---|---|---|---|---|---|
Activity | 1 | 2 | 3 | 4 | ||
Factor 1 | ||||||
Walking a quarter mile | 0.869 | −0.023 | −0.024 | −0.003 | 0.767 | 0.858 |
Walking up 10 steps | 0.821 | 0.070 | −0.040 | 0.013 | 0.766 | 0.860 |
Standing 20 minutes | 0.809 | 0.064 | −0.065 | 0.031 | 0.737 | 0.863 |
Bending from standing | 0.758 | 0.096 | −0.109 | 0.100 | 0.701 | 0.869 |
Lifting 10 pounds | 0.703 | 0.001 | 0.040 | 0.121 | 0.670 | 0.873 |
Doing heavy housework* | 0.649 | −0.171 | 0.389 | −0.025 | 0.623 | 0.885 |
Factor 2 | ||||||
Getting in and out of bed or chairs | 0.020 | 0.923 | −0.032 | −0.045 | 0.847 | 0.889 |
Using toilet | 0.060 | 0.920 | −0.063 | −0.012 | 0.827 | 0.892 |
Getting around home | 0.085 | 0.890 | −0.052 | −0.052 | 0.809 | 0.893 |
Dressing | 0.017 | 0.782 | 0.013 | 0.029 | 0.826 | 0.891 |
Eating | −0.236 | 0.629 | 0.199 | 0.246 | 0.619 | 0.922 |
Bathing | 0.171 | 0.626 | 0.205 | −0.049 | 0.755 | 0.911 |
Factor 3 | ||||||
Managing money | −0.078 | −0.059 | 0.909 | 0.026 | 0.682 | 0.840 |
Using telephone | −0.229 | 0.110 | 0.767 | 0.133 | 0.587 | 0.869 |
Preparing meals | 0.086 | 0.186 | 0.734 | −0.045 | 0.815 | 0.807 |
Shopping | 0.330 | −0.012 | 0.703 | −0.081 | 0.765 | 0.828 |
Doing light housework | 0.332 | 0.196 | 0.502 | −0.071 | 0.705 | 0.834 |
Factor 4 | ||||||
Using fingers for grasping | 0.115 | −0.033 | −0.004 | 0.845 | 0.589 | 0.498 |
Holding pen/pencil | 0.028 | 0.029 | 0.051 | 0.835 | 0.581 | 0.540 |
Reaching* | 0.373 | 0.014 | −0.045 | 0.457 | 0.405 | 0.780 |
Item removed from factor to create final scale.