TABLE 2.

EC‐specific survival ^a for first primary ECs and ECSPs, overall and by most common primary cancer sites, Florida 2005–2016

	Multivariable b
	HR (95% CI)	p‐value
First primary EC (n = 42,714)	REF
ECSP (n = 2879)	0.88 (0.79–0.97)	0.012
First primary EC (n = 42,714)	REF
ECSP (first primary BC) (n = 1422)	0.84 (0.73–0.97)	0.018
First primary EC (n = 42,714)	REF
ECSP (first primary CRC) (n = 359)	1.08 (0.83–1.39)	0.574

Abbreviations: BC, breast cancer; CRC, colorectal cancer; EC, endometrial cancer; ECSP, endometrial cancer as a second primary; HR, hazard ratio.

^a Hazard ratios obtained from Cox‐proportional hazards regression.

^b Model adjusted for age category, race/ethnicity, histology, and stage at diagnosis.