Table 3.

Inter-item correlation matrix

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