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Table 3 Descriptive statistics for the performance of each experience group on measures associated with the detection of polyp markers

From: Assessing colonoscopic inspection skill using a virtual withdrawal simulation: a preliminary validation of performance metrics

Measure

Group

M (95% CI)

Median

SD

Min

Max

Range

IQR

(a) Percentage of polyp markers found

Novices

61.92 (55.15–68.69)

63.03

13.62

25.98

85.22

59.24

14.30

Experienced Endoscopists

77.06 (71.16–82.96)

80.89

8.78

58.19

86.08

27.89

13.92

(b) Number of polyp markers found per minute

Novices

1.37 (1.18–1.57)

1.29

0.40

0.52

2.03

1.50

0.62

Experienced Endoscopists

1.99 (1.80–2.18)

1.95

0.28

1.39

2.39

1.01

0.39

(c) Percentage of mucosal surface illuminated for 0.5 s or more

Novices

70.19 (63.54–76.84)

74.37

13.38

32.07

83.27

51.20

15.98

Experienced Endoscopists

81.89 (79.86–83.93)

83.27

3.03

75.70

84.67

8.97

5.27

(d) Percentage of polyp markers illuminated for 2.5 s or more but not identified

Novices

2.93 (1.70–4.15)

2.37

2.46

0.00

6.94

6.94

4.68

Experienced Endoscopists

2.47 (0.20–4.75)

1.39

3.39

0.00

11.03

11.03

2.94