A novel cleansing score system for capsule endoscopy

Table 1 CE image scoring system

The proportion of visualized mucosa
Score 3	≥ 75%
Score 2	50%-75%
Score 1	25%-50%
Score 0	< 25%
The degree of bubbles, debris and bile
Score 3	< 5%, no obscuration
Score 2	5%-25%, mild obscuration
Score 1	25%-50%, moderate obscuration
Score 0	≥ 50%, severe obscuration

CE: Capsule endoscopy.

Table 2 Agreement between our scoring system A and previous scoring system B

Parameter	System	Score (median and IQR)	Inter-system ICC (95% CI)
Visualized mucosa	A	2.44 (2.20-2.62)	0.72 (0.27, 0.89)
	B	2.24 (2.11-2.48)
Degree of obscuration	A	2.13 (1.92-2.35)	0.86 (0.53, 0.95)
	B	1.98 (1.87-2.22)
Overall average	A	2.30 (2.09-2.50)	0.82 (0.33, 0.94)
	B	2.12 (1.97-2.36)

A: 1 frame per 5 min; B: 2 min per 5 min. IQR: Interquartile range; ICC: Intraclass correlation coefficient.

Table 3 Inter-observer agreement of our scoring system among three examiners

Parameter	Observer	Score (median and IQR)	Inter-observer ICC (95% CI)
Visualized mucosa	A	2.61 (2.40-2.81)	0.88 (0.47, 0.99)
	B	2.62 (2.42-2.82)
	C	2.44 (2.20-2.62)
Degree of obscuration	A	2.34 (2.17-2.55)	0.71 (0.39, 0.87)
	B	2.28 (2.12-2.56)
	C	2.13 (1.92-2.35)
Overall average	A	2.47 (2.32-2.63)	0.80 (0.35, 0.93)
	B	2.47 (2.26-2.62)
	C	2.30 (2.09-2.50)

Table 4 Intra-patient agreement of our scoring system among different starting frames

Parameter	Frame	Score (median and IQR)	Intra-patient ICC (95% CI)
Visualized mucosa	A	2.33 (1.93-2.59)	0.95 (0.81, 0.98)
	B	2.39 (1.88-2.66)
	C	2.31 (1.90-2.44)
Degree of obscuration	A	2.13 (1.97-2.61)	0.72 (0.39, 0.87)
	B	2.01 (1.52-2.34)
	C	2.01 (1.57-2.20)
Overall average	A	2.28 (2.08-2.61)	0.76 (0.41, 0.93)
	B	2.45 (1.70-2.50)
	C	2.16 (2.09-2.50)