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Table 1 Life Table Estimates of Survival of the Australian Longitudinal Study on Women's Health 1921-26 Cohort Relative to Women in the Australian Population Born in the Same Period and Resident in the Same State or Territory.

From: Relative survival: a useful tool to assess generalisability in longitudinal studies of health in older persons

Interval (years) L D W Effective number at risk Interval-specific observed survival Cumulative observed survival Interval-specific expected survival Cumulative expected survival Interval-specific relative survival* Relative cumulative survival* Lower 95% CI Upper 95% CI
0.0 - 1.0 12424 135 0 12424 0.989 0.989 0.981 0.981 1.008 1.008 1.006 1.010
1.0 - 2.0 12289 181 0 12289 0.985 0.975 0.979 0.960 1.007 1.015 1.012 1.018
2.0 - 3.0 12108 195 0 12108 0.984 0.959 0.977 0.938 1.007 1.022 1.018 1.026
3.0 - 4.0 11912 185 0 11912 0.984 0.944 0.975 0.914 1.010 1.032 1.028 1.037
4.0 - 5.0 11727 237 0 11727 0.980 0.925 0.973 0.890 1.007 1.040 1.034 1.045
5.0 - 6.0 11490 226 0 11490 0.980 0.907 0.971 0.864 1.010 1.050 1.044 1.056
6.0 - 7.0 11264 282 0 11264 0.975 0.884 0.968 0.836 1.007 1.058 1.051 1.064
7.0 - 8.0 10981 359 0 10981 0.967 0.855 0.964 0.806 1.003 1.061 1.054 1.069
8.0 - 9.0 10623 379 0 10623 0.964 0.825 0.961 0.774 1.004 1.066 1.057 1.074
9.0 - 10.0 10244 361 0 10244 0.965 0.795 0.956 0.740 1.009 1.075 1.066 1.085
10.0 - 11.0 9882 422 0 9882 0.957 0.761 0.951 0.704 1.006 1.082 1.071 1.093
11.0 - 12.0 9460 398 707 9106 0.956 0.728 0.945 0.665 1.012 1.095 1.083 1.107
  1. where:
  2. L = Number alive at start of interval;
  3. D = Deaths during interval;
  4. W = Lost to follow-up during each 12 month interval;
  5. Effective number at risk = persons at risk during the interval, accounting for withdrawals;
  6. Interval-specific observed survival = proportion of persons at risk who survive to the end of the interval;
  7. Cumulative observed survival = proportion of persons at risk at the start of the study period who survive to the end of the period, accounting for withdrawals;
  8. Interval-specific expected survival = proportion of persons at risk who are expected to survive to the end of the interval;
  9. Cumulative expected survival = proportion of persons at risk at the start of the study period who are expected to survive to the end of the period, accounting for withdrawals;
  10. Interval-specific relative survival = ratio of observed interval-specific observed survival to expected survival;
  11. Relative cumulative survival = ratio of observed cumulative survival to expected cumulative survival;
  12. * Relative survival ratios greater than one indicate that the study sample has lower total mortality than the population from which they are drawn from while ratios less than one indicate higher mortality;