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Table 2 Descriptive characteristics of the primary study cohort. MRI positive data is shown as the PI-RADS score of ≥ 3 or ≥ 4. Detection rates for cancer are shown for any cancer, and using definitions of ≥ Grade Group 2 (GG2 or ≥ Cambridge Prognostic Group 3 [CPG3]

From: Clinical utility and cost modelling of the phi test to triage referrals into image-based diagnostic services for suspected prostate cancer: the PRIM (Phi to RefIne Mri) study

 

≥ GG2 cancer

detection

pvalue

(vs. PSA)

≥ CPG3 cancer

detection

pvalue

(vs.PSA)

Whole cohort

PSA

0.70 (0.66–0.74)

–

0.81 (0.78–0.85)

–

PSAd

0.79 (0.75–0.83)

< 0.001

0.84 (0.80–0.87)

0.12

phi

0.82 (0.78–0.85)

< 0.001

0.87 (0.84–0.90)

< 0.001

MRI

0.63 (0.59–0.66)

< 0.001*

0.63 (0.60–0.66)

< 0.001*

MRI + PSA

0.76 (0.72–0.80)

< 0.001

0.85 (0.81–0.88)

0.03

MRI + PSAd

0.81 (0.77–0.84)

< 0.001

0.85 (0.81–0.88)

0.08

MRI + phi

0.81 (0.78–0.85)

< 0.001

0.86 (0.83–0.90)

0.02

MRI negative

PSA

0.64 (0.52–0.76)

–

0.86 (0.76–0.97)

–

PSAd

0.76 (0.64–0.87)

0.01

0.95 (0.91–0.99)

0.08

phi

0.78 (0.66–0.90)

0.01

0.89 (0.74–1.00)

0.76