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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