Table 1 Clinicopathological characteristics of USC patients in this study

n = 110

n = 56

n = 74

Age, years(mean ± SD)

68.6 ± 1.6

66.8 ± 2.0

67.8 ± 2.0

50.1 ± 7.3

50.2 ± 10.1

49.3 ± 8.2

Stage, no(%)

Early (I + II)

53 (48.2)

26 (46.4)

32 (43.2)

Late (III + IV)

57 (51.8)

30 (53.6)

42 (56.8)

Lymph node metastasis, no(%)

YES

34 (38.6)^a

18 (39.1) ^a

31 (41.9) ^a

NO

54 (61.4) ^a

28 (60.9) ^a

43 (58.1) ^a

Vital status, no(%)

Alive

74 (67.3)

40 (71.4)

48 (64.9)

Dead

36 (32.7)

16 (28.6)

26 (35.1)