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Table 4 Item-total correlation

From: Validation of the Spanish version of the Amsterdam Preoperative Anxiety and Information Scale (APAIS)

  Corrected Item-to-total correlation Squared multiple correlation Cronbach’s alpha if item removed
I am worried about the anaesthetic 0.650 0.713 0.821
The anesthetic is on my mind continually 0.648 0.713 0.823
I would like to know as much as possible about the anaesthetic 0.550 0.455 0.840
I am worried about the procedure 0.693 0.674 0.812
The procedure is on my mind continually 0.723 0.687 0.806
I would like to know as much as possible about the procedure 0.558 0.507 0.841