Table 4.

Item-total correlation

	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