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Reliability and validity of the revised Osteoporosis Knowledge Test
Background And Purpose:
The purpose of this study was to test the psychometric properties of the Osteoporosis Knowledge Test (OKT) revised to incorporate recent evidence-based recommendations for bone health.
Methods:
The revised OKT was tested with 866 participants (mean age = 62.8 years +/- 8.5 years) in an online bone health study.
Results:
Based on Rasch analysis, there was evidence of internal consistency with an item separation index of 12.68 and a reliability score of .98. The person separation index was 2.06 with a reliability score of .81. The INFIT and OUTFIT mean-square statistics for items on both subscales all demonstrated good fit ranging from 0.71 to 1.40, except for 2 items that had low OUTFIT statistics.
Conclusions:
The revised OKT provides sufficient reliability and construct validity.
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