Table 4 Survival analysis in patients with stage I–II follicular lymphoma confirmed with positron emission tomography (PET) and bone marrow examination.

From: Clinical outcomes with use of radiation therapy and risk of transformation in early-stage follicular lymphoma

  

Initial observation

Combined modality treatment

Radiation therapy alone

Systemic treatment

  

(N = 55)

(N = 17)

(N = 63)

(N = 19)

OS since diagnosis

5-year (95% CI)

98.1% (0.945–1.000)

100.0% (1.000–1.000)

98.4% (0.952–1.000)

84.2% (0.693–1.000)

HRa (95% CI)

1.70 (0.38–7.71), p = 0.49

NA, p = 1.00

Reference

4.85 (1.05–22.36), p = 0.04

PFS since treatment

5-year (95% CI)

—

80.0% (0.621–1.000)

54.9% (0.438–0.688)

44.7% (0.268–0.748)

HRa (95% CI)

0.39 (0.14–1.12), p = 0.08

Reference

1.50 (0.74–3.06), p = 0.26

  1. aHazard ratio and corresponding p-value was adjusted for the Follicular Lymphoma International Prognostic Index (FLIPI). OS overall survival, HR hazard ratio, Inf infinity, PFS progression-free survival.
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