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Table 4 Hazard ratios of locoregional recurrence found in the follow-up period associated with the EBRT/IORT group and risk factors

From: Sole adjuvant intraoperative breast radiotherapy in Taiwan: a single-center experience

Variables EBRT IORT HR (95% CI) p value
Event PY Rate Event PY Rate
Suitable 0 73.92 0.00 0 53.01 0.00 NA  
Non-suitable 3 377.33 0.01 5 96.65 0.05 7.02 (1.63–30.16) 0.009
Age < 50 2 218.05 9.17 3 32.04 93.63 10.42 (1.73–62.79) 0.011
Age ≥ 50 1 233.2 4.29 2 117.62 17.00 3.46 (0.31–38.17) 0.311