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Summary of HR for PFS and OS by age.
| Age | OS | PFS | ||
|---|---|---|---|---|
| HR (95% CI) | P for interaction* | HR (95% CI) | P for interaction* | |
| <75 years | 0.70 (0.62 to 0.79) | 0.043 | 0.77 (0.60 to 1.00) | 0.433 |
| ≥75 years | 0.94 (0.67 to 1.30) | 0.97 (0.60 to 1.58) | ||
HR, hazard ratio; PFS, progression-free survival; OS, overall survival; CI, confidence interval.
*P for interaction was expressed as the heterogeneity of efficacy between elderly and non-elderly patients.
