Using motion capture to assess colonoscopy experience level

Table 2 Metrics analysed for discriminatory ability

Kinect metrics	Experienced endoscopist	Novice	Levene’s test	P value
Percentage of time with hands closer than 25 cm (%)	7	23	0.048	0.02
Distance between hands (cm)	45	37	0.09	0.01
Angle of shoulders (degrees)	17	20	0.95	0.38
Right hand below z-line (cm)	25	36	0.95	0.01
Mean distance shoulder-hand (cm)	31	31
Left hand above z-line (cm)	6	15	0.03	0.005
Mean distance: shoulder-hand (cm)	32	31
Left elbow (degrees)	91	92	0.86	0.81
Right elbow (degrees)	144	140	0.55	0.55
Height participants (cm)	39	30	0.08	0.02
Compared to coordinates