Table 3.
Odds ratio for BCR estimated from multivariable conditional logistic regression models without and with interaction terms between the mean Ki67 scores and fractionation schedules
| Schedules | Variable | OR | 95% CI (OR) | P (OR) | P for interaction∗ |
|---|---|---|---|---|---|
| 74 Gy & 60 Gy | Mean Ki67 | 1.09 | 1.02-1.17 | .007 | .26 |
| 74 Gy & 57 Gy | Mean Ki67 | 1.07 | 1.01-1.14 | .03 | .59 |
| 60 Gy & 57 Gy | Mean Ki67 | 1.11 | 1.04-1.19 | .001 | .59 |
Abbreviations as in Table 2.
Odds ratios are adjusted for matching variables and age at randomisation.
∗
P value for the interaction between the mean Ki67 scores and fractionation schedules.