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Table 3 Inter-item correlation matrix

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

Item

1

2

3

4

5

6

1. I am worried about the anesthetic

1000

     

2. The anaesthetic is on my mind continually

0.822

1.000

    

3. I would like to know as much as possible about the anaesthetic

0.451

0.434

1000

   

4. I am worried about the procedure

0.513

0.461

0.325

1000

  

5. The procedure is on my mind continually

0.517

0.556

0.351

0.791

1.000

 

6. I would like to know as much as possible about the procedure

0.270

0.260

0.580

0.527

0.511

1.000