Table 1.

Summary statistics for visual analog scale measurements (N=102).

Attempt and instrument		Visual analog scale
		Mean (SD)	Median (min, max)
1
	eVASa	4.20 (2.09)	3.78 (0.74, 8.11)
	Paper	4.04 (2.10)	3.65 (0.60, 9.00)
2
	eVAS	4.52 (2.19)	3.95 (0.60, 9.15)
	Paper	4.33 (2.23)	4.05 (0.70, 9.55)

^aeVAS: electronic visual analog scale.