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. 2019 Apr 25;2019(4):CD012663. doi: 10.1002/14651858.CD012663.pub2

8. MRI‐positivity threshold effect.

MRI‐positivity threshold effect, verified by template‐guided biopsy as the reference standard, with threshold ≥ 3and ≥ 4 out of 5 for identifying prostate cancer
MRI threshold Target
 condition N participants
 (studies)a Proportion
 negative MRI
 (95% CI) Sensitivity
 (95% CI) Specificity
 (95% CI)
≥ 3/5 G = 1 1647 (8) 0.29 (0.21 to 0.40) 0.68 (0.57 to 0.77) 0.28 (0.19 to 0.39)
G ≥ 2 2974 (10) 0.30 (0.23 to 0.38) 0.89 (0.82 to 0.94) 0.39 (0.32 to 0.47)
G ≥ 3 1438 (7) 0.31 (0.21 to 0.42) 0.96 (0.87 to 0.99) 0.35 (0.26 to 0.46)
≥ 4/5 G = 1 834 (4) 0.60 (0.38 to 0.78) 0.26 (0.16 to 0.40) 0.57 (0.36 to 0.76)
G ≥ 2 1083 (5) 0.59 (0.43 to 0.74) 0.72 (0.52 to 0.86) 0.78 (0.68 to 0.86)
G ≥ 3 834 (4) 0.60 (0.38 to 0.78) 0.86 (0.51 to 0.97) 0.68 (0.51 to 0.81)
CI: confidence interval; G: International Society of Urological Pathology grade; MRI: magnetic resonance imaging; N: number

aData did not allow differentiation between the mix of included participants (biopsy‐naïve and prior‐negative biopsy men).