Table 1:

Summary of clinical data from Surveillance, Epidemiology, and End Results (SEER) registry among patients with stage I or II non-small cell lung cancer

					Cause of death†
					Lung cancer		Non-lung cancer
Stage	Age**	% Female	Total No.	No. of All-cause deaths	Event No. (%)*	10-year LC-CID	Event No. (%)*	10-year non-LC-CID
I	18–44	61%	575	122	96 (79%)	25%	26 (21%)	9%
I	45–59	54%	8266	2548	1838 (72%)	32%	710 (28%)	15%
I	60–74	50%	25942	10813	7268 (67%)	41%	3545 (33%)	25%
I	75+	53%	18351	10850	6943 (64%)	50%	3907 (36%)	36%
II	18–44	50%	198	86	76 (88%)	48%	10 (12%)	7%
II	45–59	44%	2740	1448	1231 (85%)	57%	217 (15%)	13%
II	60–74	42%	6410	3942	3187 (81%)	63%	755 (19%)	18%
II	75+	47%	3697	2819	2245 (80%)	71%	574 (20%)	23%
Total		50%	66179	32628	22884 (70%)	47%	9744 (30%)	25%

^†Based on the “SEER cause-specific death classification” variable in the SEER registry, subject to cause-of-death misclassification.

^**Age at diagnosis.

^*% among all-cause death within each subgroup ignoring censoring.

LC-CID, cumulative incidence of lung cancer deaths; non-LC-CID, cumulative incidence of non-lung cancer deaths.