Table 2.

Outcome measures of the Visualization- and Control Group

	Visualization Group (n=28)			Control Group (n=28)
Variable	n	M (CI)	SD	n	M (CI)§	SD§	P*
Patient satisfaction questionnaire‡	25	21.2 (19.2 to 23.8)	4,8	28	15.8 (14.1 to 17.5)	4,5	<0.001
Item no. 5		4.1 (3.50 to 4.69)	1.44		2.9 (2.46 to 3.34)	1.13
Knowledge questionnaire†	24	7.21 (6.5 to 7.9)	1,6	25	5.04 (3.3 to 6.2)	2,8	0.006
Knowledge questionnaire†	24	7.21 (6.5 to 7.9)	1,6	25	5.04 (3.3 to 6.2)	2,8	0.006
Knowledge questionnaire†	24	7.21 (6.5 to 7.9)	1,6	25	5.04 (3.3 to 6.2)	2,8	0.006
Overall time (min)	25	10.16 (8.55 to 11.24)	3,0	23	9.23 (7.19 to 11.28)	4,8	0.441
Time for visualization (min)		3.54 (3.41 to 4.40)	1.2

^* The group differences were calculated using t test (overall time) and Mann-Whitney-U-Test (patient satisfaction - and knowledge questionnaire) at the 5% level of significance.

^‡ possible range 5 - 25 points

^† possible range 0 - 10 points

^§ M = mean score; CI = 95% confidence interval, SD = standard deviation