Table 2. Estimated bias and age-standardised relative survival at 1 and 5 years for Population 2 for realistic parameter values.
| |
|
Low relative survival | Medium relative survival | High relative survival | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Scenario | Years (RS) | Truth | Pop 2 | Bias | Truth | Pop 2 | Bias | Truth | Pop 2 | Bias |
|
(A) 15% Missing, 85% secondary diagnosis, 10% mis-specified if DCI (3-year uniform), traceback allowed | ||||||||||
| 1 | 35.66 | 34.31 | −1.354 | 59.478 | 57.790 | −1.688 | 97.928 | 97.582 | −0.346 | |
| |
5 |
10.34 |
9.911 |
−0.475 |
31.639 |
30.519 |
−1.119 |
95.427 |
94.991 |
−0.436 |
|
(B) 30% Missing, 90% secondary diagnosis, 5% mis-specified if DCI (2-year uniform), traceback allowed | ||||||||||
| 1 | 35.66 | 33.07 | −2.591 | 59.478 | 56.047 | −3.431 | 97.928 | 97.168 | −0.760 | |
| 5 | 10.34 | 9.27 | −1.112 | 31.639 | 28.966 | −2.673 | 95.427 | 94.369 | −1.057 | |
Bias as given as the difference in percentage units between the simulated truth and the population. The errors in cancer registration have been introduced in Population 2.