A multi-centre randomised double-blind placebo-controlled trial to evaluate the value of a single bolus intravenous alfentanil in CT colonography

Table 4 Experience questionnaire

Outcome	Placebo	Alfentanil	P value
Average insufflation pain	3.8 (2.1)	1.8 (2.0)	<0.001
Insufflation most burdensome aspect	56.1% (23/41)	18.6% (8/43)	0.001
Insufflation most painful aspect	60.0% (24/40)	34.1% (15/44)	0.053
Advise for screening	92.7% (38/41)	100% (44/44)	0.11

This table shows the mean insufflation pain with standard deviation between brackets.
For the other outcomes the percentages are provided with the numbers between brackets.

ISSN: 1471-230X