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Table 5 Summary of results of multi-trait/multi-item scaling

From: Developing and testing an instrument to measure the presence of conditions for successful implementation of quality improvement collaboratives

  Item-scale convergent validity Criterion 1 (inclusive criterion) Item-scale divergent validity Criterion 2 (exclusive criterion) Scaling fulfilment
Scale Range of item-scale correlations1 Number of item-scale correlations2 Range of correlations with other scales3 Number of items higher correlation with other scale4 Number of items that meet criterion 1 but not 2
1. Organizational support 0.646–0.833 5/5 0.165–0.371 0/5 0/5
2. Team organization 0.601–0.701 5/5 0.096–0.392 0/5 0/5
3. External change agent support 0.471–0.657 4/4 0.070–0.350 0/4 0/5
  1. 1 Pearson correlations between items and hypothesized scale (corrected for overlap).
  2. 2 Number of item-scale correlations that meet minimum standard for convergent validity (≤ 0.40).
  3. 3 Pearson correlations between items and other scales.
  4. 4 Correlations higher between items and other scales in comparison with hypothesized scale (by two standard errors or more; ≤ 0.16)