Fig. 4

Mean (±95% CIs) performance for each experience group on measures describing the movement of the colonoscope. Specific measures are: withdrawal time (a); linear distance travelled by the colonoscope (b); total distance travelled by the colonoscope tip (c); and distance travelled by the colonoscope tip due to movement of the up/down angulation control (d), movement of the left/right angulation control (e), and axial rotation (f). Asterisks indicate statistically significant differences between the groups