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Table 1 Probabilities used in the model

From: Cost-effectiveness of MRI compared to mammography for breast cancer screening in a high risk population

PROBABILITIES

MRI

Mammography

 

Base Case

Range

Base Case

Range

Positive[11]

0.108

0.047–0.169

0.054

0.010–0.098

BI-RADS 0/3[11]

0.856

0.787–0.925

0.898

0.838–0.957

BI-RADS 4/5[11]

0.144

0.075–0.213

0.102

0.043–0.162

True Positive BI-RADS 0/3[11]

0.028

0.000–0.061

0.035

0.000–0.070

False Positive BI-RADS 0/3[11]

0.972

0.939–1.000

0.965

0.930–1.000

Node Positive[11]

0.214

0.134–0.295

0.564

0.467–0.661

Node Negative[17, 18]

0.786

0.705–0.866

0.436

0.339–0.533

True Positive BI-RADS 4/5[17, 18]

0.323

0.231–0.415

0.478

0.380–0.576

False Positive BI-RADS 4/5[17, 18]

0.677

0.585–0.769

0.522

0.424–0.620

False Negative Node Positive[19]

1.000

0.700–1.000

1.000

0.700–1.000

Negative[20]

0.892

0.831–0.953

0.946

0.902–0.990

True Negative[21]

0.997

0.985–1.000

0.993

0.977–1.000

False Negative[21]

0.004

0.000–0.015

0.007

0.000–0.023

Live Node Positive[22]

0.970

0.937–1.000

0.970

0.937–1.000

Live Node Negative

0.990

0.970–1.000

0.990

0.970–1.000

Live no cancer

0.998

0.989–1.000

0.998

0.989–1.000

  1. Abbreviations: BI-RADS, Breast Imaging Reporting and Data System classification