Studies | Study period | Total number of patients | Stage | Group | Breast cancer death HR (95%CI) |
---|---|---|---|---|---|
Hwang, 2013 [6] | 1990–2004 | 112,154 | I-II | MRM ± RT | 1.00 |
BCS + RT | 0.84 (0.78–0.91) | ||||
Agarwal, 2014 [7] | 1998–2008 | 132,149 | I-II (tumor size ≤4 cm) | BCS + RT | 1.00 |
MRM without RT | 1.31 (1.25–1.39) | ||||
MRM + RT | 1.47 (1.34–1.61) | ||||
Hartmann-Johnsen, 2015 [8] | 1998–2008 | 13,015 | I-II (T1–2N0-1M0) | BCS + RT | 1.00 |
MRM ± RT | 1.64 (1.43–1.88) | ||||
Hofvind, 2015 [9] | 2005–2011 | 9.547 | I-III | BCS + RT | 1.00 |
MRM ± RT | 1.7 (1.3–2.4) | ||||
van Maaren, 2016 [10] | 2000–2004 | 37,207 | I-II (T1–2N0-1M0) | MRM ± RT | 1.00 |
BCS + RT | 0.81 (0.78–0.85) | ||||
Christiansen, 2018 [11] | 1995–2012 | 58,331 | I-III | BCS ± RT | 1.00 |
MRM ± RT | 1.20 (1.15–1.25) |