Table 1.

Criteria Used in the Process of CHSA Item Reduction

CriterionSource of Data
Low expert review rating (bottom 50%)Study I
High ceiling effect (item mean >4.0 on a 5-point scale)Study II
Low item–total scale correlation (<.60)Study II
Improved scale α coefficient if item deletedStudy II
Low item covariance (<mean) with majority of other scale itemsStudy II