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Table 2 Pooled absolute differences (cm) (fixed effect unless noted) and limits of agreement for studies and patients comparing the respective tests
| N (studies) | N (patients) | Pooled MD (cm) (95 % CI) | I2 | LOA (cm) | |
|---|---|---|---|---|---|
| All studies and patients | |||||
| MRI vs pathology | 8 | 243 | 0.0 (−0.1, 0.2) | 0 % | +/−3.8 |
| Studies of MRI vs US | |||||
| MRI vs pathology | 5 | 123 | 0.1 (−0.2, 0.3) | 0 % | +/− 2.8 |
| US vs pathologya | 5 | 123 | −0.3 (−0.6, 0.1) | 69 % | +/− 2.6 |
| MRI and US (mean) vs pathology | 5 | 123 | −0.1 (−0.3, 0.1) | 16 % | +/− 2.3 |
| MRI vs USa | 5 | 123 | 0.3 (−0.1, 0.7) | 81 % | NA |
| MRI vs pathology (patients without US)b | 3 | 14 | −1.5 (−3.1, 0.1) | NA | +/− 6.0 |
| Studies of MRI vs mammography | |||||
| MRI vs pathology | 4 | 78 | 0.1 (−0.1, 0.3) | 0 % | +/− 4.1 |
| Mammography vs pathology | 4 | 78 | 0.0 (−0.3, 0.4) | 39 % | +/− 5.0 |
| MRI and mammography (mean) vs pathology | 4 | 78 | 0.1 (−0.1, 0.4) | 21 % | +/− 4.2 |
| MRI vs mammography | 4 | 78 | 0.1 (−0.2, 0.4) | 0 % | NA |
| MRI vs pathology (patients without mammography)b | 3 | 25 | 0.0 (−0.7, 0.7) | NA | +/− 3.5 |
| Studies of MRI vs clinical examination | |||||
| MRI vs pathology | 3 | 107 | 0.0 (−0.2, 0.3) | 0 % | +/− 4.2 |
| Clinical examination vs pathologya | 3 | 107 | −0.8 (−1.5, −0.1)* | 57 % | +/− 5.1 |
| MRI and clinical examination (mean) vs pathology | 3 | 107 | −0.2 (−0.5, 0.1) | 9 % | +/− 4.1 |
| MRI vs clinical examinationa | 3 | 107 | 0.9 (0.2, 1.5)* | 56 % | NA |
| MRI vs pathology (patients without clinical examination)b | 2 | 3 | NA c | NA c | NA c |
