No of 5-year relative S.E. % of lost Median
  patients survival rate     (months)
Total 1030 68.99 3.34 35.83
1-2 st.treated 464 94.26 3.24 47.41
1-2 st.not treated 61 75.31 13.78 42.62
3 st. treated 194 68.97 7.82 30.41
3 st.not treated 46 39.06 19.12 23.91 15.76
4 st.treated 77 32.24 12.12 24.68 15.48
4 st.not treated 103 6.7 6.67 8.74 2.7