## The cumulative mortality due to cardiac causes for

The cumulative mortality due to cardiac causes for left-sided cases by radiotherapy regimen Dynasore illustrated in Fig. 1. At 15-years follow-up, the rate of cardiac mortality for HF-WBI [95% confidence interval] was 4.8 [3.9, 5.9]%, and for CF-WBI was 4.2 [2.5, 6.5]%. This difference was not statistically significant when using either unadjusted values (p = 0.74), or stratified by propensity score quintiles (p = 0.45). The cumulative mortality due to cardiac causes for right-sided cases by radiotherapy regimen is illustrated in Fig. 2. At 15-years follow-up, the rate of cardiac mortality for HF-WBI [95% confidence interval] was 4.9% [4.0, 6.1], and for CF-WBI was 3.5% [2.0, 5.6]. This difference was also not statistically significant when using either unadjusted values (p = 0.21), or stratified by propensity score quintiles (p = 0.15).

Fig. 1. Cumulative mortality due to cardiac cause for left-sided cases. Gray solid line indicates HF-WBI (hypofractionated whole breast radiotherapy) group; black solid line, CF-WBI (conventional fractionated whole breast radiotherapy) group; dotted gray and black lines indicate 95% confidence interval for HF-WBI and CF-WBI groups respectively. p Values are secondary growth calculated using Gray’s test using unadjusted or the propensity score model.Figure optionsDownload full-size imageDownload high-quality image (72 K)Download as PowerPoint slide