Chromoscopy versus conventional endoscopy for the detection of polyps in the colon and rectum

Steven R Brown; Wal Baraza; Paul Hurlstone

doi:10.1002/14651858.CD006439.pub2

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Analysis 1.1

Comparison 1 Total number polyps (neoplastic and non‐neoplastic) detected, Outcome 1 Total polyps (neoplastic and non‐neoplastic) detected.

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Analysis 1.2

Comparison 1 Total number polyps (neoplastic and non‐neoplastic) detected, Outcome 2 Total polyps (neoplastic and non‐neoplastic) in proximal colon.

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Analysis 1.3

Comparison 1 Total number polyps (neoplastic and non‐neoplastic) detected, Outcome 3 Total polyps (neoplastic and non‐neoplastic) in distal colon.

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Analysis 2.1

Comparison 2 Total number of neoplastic lesions detected, Outcome 1 Total neoplastic lesions.

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Analysis 2.2

Comparison 2 Total number of neoplastic lesions detected, Outcome 2 Total neoplstic lesions in proximal colon.

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Analysis 2.3

Comparison 2 Total number of neoplastic lesions detected, Outcome 3 Total neoplastic lesions in distal colon.

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Analysis 2.4

Comparison 2 Total number of neoplastic lesions detected, Outcome 4 Total neoplastic lesions (studies with experienced colonoscopists only included).

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Analysis 3.1

Comparison 3 Total number of patients with at least one polyp (neoplastic or non‐neoplastic) detected, Outcome 1 Number of patients with at least 1 polyp (neoplastic or non‐neoplastic).

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Analysis 3.2

Comparison 3 Total number of patients with at least one polyp (neoplastic or non‐neoplastic) detected, Outcome 2 Patients with at least one polyp (neoplastic or non‐neoplastic) in the proximal colon.

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Analysis 3.3

Comparison 3 Total number of patients with at least one polyp (neoplastic or non‐neoplastic) detected, Outcome 3 Patients with at least one polyp (neoplastic or non‐neoplastic) in the distal colon.

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Analysis 4.1

Comparison 4 Total number of patients with at least one neoplastic lesion detected, Outcome 1 Total patients with at least one neoplastic lesion.

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Analysis 4.2

Comparison 4 Total number of patients with at least one neoplastic lesion detected, Outcome 2 Patients with at least one neoplastic lesion in proximal colon.

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Analysis 4.3

Comparison 4 Total number of patients with at least one neoplastic lesion detected, Outcome 3 Patients with at least one neoplastic lesion in the distal colon.

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Analysis 5.1

Comparison 5 Number of diminutive neoplastic lesions detected with each intervention, Outcome 1 Number of diminutive neoplastic lesions.

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Analysis 5.2

Comparison 5 Number of diminutive neoplastic lesions detected with each intervention, Outcome 2 Number of diminutive neoplastic lesions in the proximal colon.

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Analysis 5.3

Comparison 5 Number of diminutive neoplastic lesions detected with each intervention, Outcome 3 Number if diminutive neoplastic lesions in the distal colon..

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Analysis 6.1

Comparison 6 Number of patients with at least 1 diminutive neoplastic lesion detected with each intervention, Outcome 1 Patients with diminutive neoplastic lesions.

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Analysis 6.2

Comparison 6 Number of patients with at least 1 diminutive neoplastic lesion detected with each intervention, Outcome 2 Patients with diminutive neoplastic lesions in the proximal colon.

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Analysis 6.3

Comparison 6 Number of patients with at least 1 diminutive neoplastic lesion detected with each intervention, Outcome 3 Patients with diminutive neoplastic lesions in the distal colon.

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Analysis 7.1

Comparison 7 Number of patients with more than 3 neoplastic lesions detected with each intervention, Outcome 1 Number of patients with 3 or more adenomas.

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Comparison 1. Total number polyps (neoplastic and non‐neoplastic) detected

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Total polyps (neoplastic and non‐neoplastic) detected Show forest plot	4	1009	Mean Difference (IV, Fixed, 95% CI)	0.77 [0.52, 1.01]

2 Total polyps (neoplastic and non‐neoplastic) in proximal colon Show forest plot	3	811	Mean Difference (IV, Fixed, 95% CI)	0.49 [0.35, 0.62]

3 Total polyps (neoplastic and non‐neoplastic) in distal colon Show forest plot	3	811	Mean Difference (IV, Fixed, 95% CI)	0.34 [0.21, 0.48]

Comparison 1. Total number polyps (neoplastic and non‐neoplastic) detected

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Comparison 2. Total number of neoplastic lesions detected

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Total neoplastic lesions Show forest plot	4	1009	Mean Difference (IV, Fixed, 95% CI)	0.37 [0.24, 0.49]

2 Total neoplstic lesions in proximal colon Show forest plot	3	811	Mean Difference (IV, Fixed, 95% CI)	0.30 [0.16, 0.43]

3 Total neoplastic lesions in distal colon Show forest plot	3	811	Mean Difference (IV, Fixed, 95% CI)	0.12 [‐0.02, 0.26]

4 Total neoplastic lesions (studies with experienced colonoscopists only included) Show forest plot	2	519	Mean Difference (IV, Fixed, 95% CI)	0.58 [0.41, 0.75]

Comparison 2. Total number of neoplastic lesions detected

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Comparison 3. Total number of patients with at least one polyp (neoplastic or non‐neoplastic) detected

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Number of patients with at least 1 polyp (neoplastic or non‐neoplastic) Show forest plot	2	457	Odds Ratio (M‐H, Fixed, 95% CI)	2.13 [1.47, 3.10]

2 Patients with at least one polyp (neoplastic or non‐neoplastic) in the proximal colon Show forest plot	1	259	Odds Ratio (M‐H, Fixed, 95% CI)	1.87 [1.10, 3.16]

3 Patients with at least one polyp (neoplastic or non‐neoplastic) in the distal colon Show forest plot	1	259	Odds Ratio (M‐H, Fixed, 95% CI)	1.92 [1.14, 3.24]

Comparison 3. Total number of patients with at least one polyp (neoplastic or non‐neoplastic) detected

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Comparison 4. Total number of patients with at least one neoplastic lesion detected

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Total patients with at least one neoplastic lesion Show forest plot	4	1009	Odds Ratio (M‐H, Fixed, 95% CI)	1.61 [1.24, 2.09]

2 Patients with at least one neoplastic lesion in proximal colon Show forest plot	2	551	Odds Ratio (M‐H, Fixed, 95% CI)	1.55 [1.04, 2.30]

3 Patients with at least one neoplastic lesion in the distal colon Show forest plot	2	551	Odds Ratio (M‐H, Fixed, 95% CI)	1.24 [0.79, 1.94]

Comparison 4. Total number of patients with at least one neoplastic lesion detected

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Comparison 5. Number of diminutive neoplastic lesions detected with each intervention

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Number of diminutive neoplastic lesions Show forest plot	3	749	Mean Difference (IV, Fixed, 95% CI)	0.27 [0.14, 0.40]

2 Number of diminutive neoplastic lesions in the proximal colon Show forest plot	2	551	Mean Difference (IV, Fixed, 95% CI)	0.27 [0.10, 0.44]

3 Number if diminutive neoplastic lesions in the distal colon. Show forest plot	2	551	Mean Difference (IV, Fixed, 95% CI)	0.10 [‐0.07, 0.26]

Comparison 5. Number of diminutive neoplastic lesions detected with each intervention

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Comparison 6. Number of patients with at least 1 diminutive neoplastic lesion detected with each intervention

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Patients with diminutive neoplastic lesions Show forest plot	3	749	Odds Ratio (M‐H, Fixed, 95% CI)	1.71 [1.23, 2.37]

2 Patients with diminutive neoplastic lesions in the proximal colon Show forest plot	2	551	Odds Ratio (M‐H, Fixed, 95% CI)	2.01 [1.29, 3.15]

3 Patients with diminutive neoplastic lesions in the distal colon Show forest plot	2	551	Odds Ratio (M‐H, Fixed, 95% CI)	1.37 [0.81, 2.30]

Comparison 6. Number of patients with at least 1 diminutive neoplastic lesion detected with each intervention

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Comparison 7. Number of patients with more than 3 neoplastic lesions detected with each intervention

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Number of patients with 3 or more adenomas Show forest plot	4	1009	Odds Ratio (M‐H, Fixed, 95% CI)	2.55 [1.49, 4.36]

Comparison 7. Number of patients with more than 3 neoplastic lesions detected with each intervention

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