The nine physical, psychological and social performances were developed from the Comparison Table of Disability Indices and from various other sociomedical and sociodental indicators, to achieve content validity.After the analysis of internal consistency and item-total score correlation, one of the performance measures, 'Doing light physical activities', was considered to be redundant and excluded, so the final version of OIDP consists of eight daily performances.
Performances assessed in the Oral Impacts on Daily
Performances
a. Eating and enjoying food
b. Speaking and pronouncing clearly
c. Cleaning teeth
d. Sleeping and relaxing
e. Smiling, laughing and showing teeth without embarrassment
f. Maintain usual emotional state without being irritable
g. Carrying out major work or social role
h. Enjoying contact with people