Table 1.

Patient characteristics

	AD (n = 201)	SCC (n = 198)
Stage
I	57.7% (n = 116)	55.6% (n = 110)
II	21.9% (n = 44)	30.3% (n = 60)
III	19.4% (n = 39)	13.6% (n = 27)
IV	1% (2)	0.5% (n = 1)
Age at surgery (years)
Mean	66.3	67.2
Median	66.4	67.3
Range	39.2–87.0	43.2–82.4
Smoking status
Current smoker	32.8% (66)	49.0% (97)
Ex‐smoker	54.7% (110)	50.0% (99)
Never smoker	12.4% (25)	1% (2)
Packyears
Mean	27.0	40.4
Range	0–76	0–145 (5 missing)
Sex
Female	54.7% (110)	33.3% (66)
Male	45.3% (91)	66.7% (132)
Recurrence	48.3% (97)	36.9% (73)
At time of recurrence
Local recurrence	26.8% (26)	35.6% (26)
Metastases	73.2% (71)	64.4% (47)
Follow‐up time (months)
Median	89.2	65.8
Range	18.0–128.6	16.6–136.9
OS	47.0% (1 lost to follow‐up)	51.0%