Table 2 Comparisons of short- and long-term oncological outcomes between the elderly and the nonelderly groups before and after propensity score matching

Short-term outcome

Major morbidity

53 (14.60)

74 (7.64)

< 0.001

47 (14.07)

23 (6.89)

0.004

Perioperative death

18 (4.96)

17 (1.76)

0.002

8 (2.40)

6 (1.80)

0.787

Long-term outcome

Recurrence during follow-up

181 (49.9)

625 (64.6)

< 0.001

172 (51.5)

205 (61.4)

0.010

Median time of recurrence (months)*

27.0

(9.5–50.0)

23.0

(5.9–53.0)

0.784

24.3

(8.0–50.0)

27.0

(7.0-55.3)

0.229

Death during follow-up

246 (67.8)

554 (57.2)

< 0.001

132 (39.5)

152 (45.5)

0.118

Cancer-specific death

140 (38.6)

503 (52.0)

< 0.001

89 (26.6)

131 (39.2)

< 0.001

Noncancer-specific death

106 (29.2)

51 (5.2)

< 0.001

43 (12.9)

21 (6.3)

< 0.001

Median CSS (months) *

39.5

(21.7–60.2)

41.9

(16.2–68.5)

0.073

44.6

(19.3–65.6)

37.5

(18.7–58.7)

0.870

 1-year CSS rate, %

91.3

81.5

91.0

86.2

 3-year CSS rate, %

72.1

62.4

71.3

68.8

 5-year CSS rate, %

56.3

51.3

55.9

58.0