. Author manuscript; available in PMC: 2021 Jun 1.

Published in final edited form as: J Geriatr Oncol. 2019 Dec 30;11(5):850–859. doi: 10.1016/j.jgo.2019.12.010

Appendix Table 3.

Relative risks

	Reference Group	Comparison Group	Relative Risk	Source
Age	for each 5-year increase		1.07	Calibration; ³
Tumor size	<=0.5cm	0.6–1.0cm	1.70	Calibration; ⁴
	<=0.5cm	1.1–1.5cm	1.90
	<=0.5cm	1.6–2.0cm	2.09
	<=0.5cm	>2.0cm	3.16
Surgical margin	Close	Positive	1.34	⁵
Surgical margin	Close	Negative	0.56	⁵
Lymph nodes	negative	1–3	1.85	⁶
Lymph nodes	negative	≥4	2	⁶
RT	No RT	RT	0.33	⁸