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. 2023 Nov 9;28:504. doi: 10.1186/s40001-023-01470-3

Table 2.

Sensitivity, specificity, positive, and negative predictive data of the cutoff points according to the groups

Limit value	BCS group^a				Mastectomy group^a
Limit value	Sensitivity (%)	Specificity (%)	Positive predictive value (%)	Negative predictive value (%)	Sensitivity (%)	Specificity (%)	Positive predictive value (%)	Negative predictive value (%)
Left lung volume	67.9	75.0	73.1	70.0	80.0	70.8	36.4	94.4
Lung/Heart rate	–	–	–	–	80.0	70.0	36.4	94.4

BCS: Breast-conserving surgery

^aCut off points:

Left lung volume 1154 cc for the BCS and 1208 cc for the mastectomy group

Lung/Heart volume ratio: 1.92 for the mastectomy group