Table 3 Corrected item total correlation and Cronbach’s alpha of OIDP by number of types of OML
No OML (N = 226) Cronbach's Alpha (Standardized Items) = 0.811 | ||
|---|---|---|
OIDP items | Corrected Item-Total Correlation | Cronbach's Alpha if Item Deleted |
Eating | .675 | .757 |
Speaking | .447 | .792 |
Cleaning | .592 | .767 |
Smiling | .269 | .808 |
Sleeping | .634 | .759 |
Emotional state | .655 | .755 |
Carrying out major work | .564 | .779 |
Contact | .391 | .796 |
One type of OML (N = 196) | ||
Cronbach's Alpha (Standardized Items) = 0.894 | ||
Eating | .721 | .867 |
Speaking | .586 | .878 |
Cleaning | .713 | .865 |
Smiling | .614 | .876 |
Sleeping | .715 | .865 |
Emotional state | .680 | .870 |
Carrying out major work | .646 | .874 |
Contact | .683 | .870 |
> One type of OML (N = 111) | ||
Cronbach's Alpha (Standardized Items) = 0.921 | ||
Eating | .700 | .909 |
Speaking | .711 | .906 |
Cleaning | .751 | .902 |
Smiling | .657 | .910 |
Sleeping | .751 | .902 |
Emotional state | .779 | .900 |
Carrying out major work | .766 | .903 |
Contact | .747 | .904 |
Total study population (N = 533) | ||
Cronbach's Alpha (Standardized Items) = 0.890 | ||
Eating | .694 | .863 |
Speaking | .606 | .869 |
Cleaning | .692 | .859 |
Smiling | .572 | .872 |
Sleeping | .698 | .858 |
Emotional state | .703 | .858 |
Carrying out major work | .671 | .864 |
Contact | .642 | .866 |