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Table 2 Internal consistency of Decisional Conflict Scale domains

From: Development and validation of the Japanese version of the Decisional Conflict Scale to investigate the value of pharmacists’ information: a before and after study

Domain* (%) Item no. Cronbach’s alpha Item-domain correlation Convergent validity** (%) Discriminant validity***
Uncertainty 10 0.91 0.83 100 100
  11   0.85   
  12   0.80   
Informed 1 0.90 0.82 100 100
  2   0.86   
  3   0.74   
Values clarity 4 0.96 0.90 100 100
  5   0.93   
  6   0.90   
Support 7 0.84 0.70 100 100
  8   0.63   
  9   0.80   
Effective decision 13 0.90 0.74 100 100
  14   0.70   
  15   0.82   
  16   0.82   
  1. *Average score of the DCS before pharmacists’ provision of information.
  2. **The percentage of items that passed the test of convergent validity.
  3. ***The percentage of items that passed the test of discriminant validity.
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