Table 3 Sensitivity analyses of the HER2DX risk score for RFS and OS in patients with node-negative disease treated with trastuzumab alone

From: HER2DX in older patients with HER2-positive early breast cancer: extended follow-up from the RESPECT trial of trastuzumab ± chemotherapy

Outcome

Time (yrs)

Low-risk estimate (95% CI)

High-risk estimate (95% CI)

HR (95% CI)

RFS

5

88.7 (80.5–97.7)

68.6 (44.5–100.0)

0.33 (0.1–1.3)

6

86.5 (77.6–96.4)

68.6 (44.5–100.0)

0.36 (0.1–1.5)

7

82.2 (72.2–93.5)

57.1 (32.6–100.0)

0.35 (0.1–1.2)

8

82.2 (72.2–93.5)

57.1 (32.6–100.0)

0.35 (0.1–1.2)

9

76.2 (64.4–90.2)

57.1 (32.6–100.0)

0.42 (0.1–1.3)

10

76.2 (64.4–90.2)

57.1 (32.6–100.0)

0.42 (0.1–1.3)

OS

5

96.4 (91.6–100.0)

80.0 (58.7–100.0)

0.28 (0.1–0.9)

6

94.4 (88.5–100.0)

80.0 (58.7–100.0)

0.25 (0.0–1.5)

7

92.5 (85.6–99.9)

68.6 (44.5–100.0)

0.21 (0.1–0.9)

8

92.5 (85.6–99.9)

68.6 (44.5–100.0)

0.21 (0.1–0.9)

9

86.9 (77.3–97.7)

68.6 (44.5–100.0)

0.31 (0.1–1.2)

10

86.9 (77.3–97.7)

45.7 (18.4–100.0)

0.23 (0.1–0.8)

  1. At each timepoint, survival estimates and hazard ratios (HRs) were derived from models in which patients were censored at the specified year.