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Table 4 Reliability test of OIDP among the working sample (n:561).

From: Validation of two complementary oral-health related quality of life indicators (OIDP and OSS 0-10 ) in two qualitatively distinct samples of the Spanish population

OIDP Dimensions Corrected item-total correlation Alpha if item deleted
Eating 0.43 0.65
Speaking 0.40 0.67
Cleaning 0.30 0.68
Working 0.38 0.67
Social 0.43 0.66
Sleeping & Relaxing 0.38 0.67
Smiling 0.42 0.66
Emotional 0.45 0.65
  1. Analysis of corrected item-total correlation and Alpha value if item deleted.
  2. Standardised item Alpha = 0.71
  3. Alpha = 0.69
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