Stage

Age group

No of cases

5-year OS rate

P value

5-year CSS rate

P value

Stage I

<70

95

94.7%

< 0.001

97.8%

0.001

≥70

92

72.8%

91.1%

All

187

Stage II

<70

105

81.9%

87.3%

≥70

96

60.0%

82.6%

All

201

Stage III

<70

147

71.9%

76.2%

≥70

86

44.2%

62.3%

All

233

Stage IV

<70

60

11.7%

11.9%

≥70

33

0%

0%

All

93