Table 3 Univariate analysis of PFS.

From: Effectiveness and tolerability of radiotherapy for patients with indolent non-Hodgkin’s lymphoma: a monocenter analysis

PFS

Parameters

Univariate analysis

HR (95%CI)

Median PFS in years (95% CI)

p-value

Gender

1.3 (0.6–2.9)

10 (3.6–16.3)

0.432

 

14 (2.8–25.2)

 

Age

 ≤ 60 y/o

2.5 (1.1–5.8)

14.0 (10.2–14.8)

0.021

 > 60 y/o vs

 

10.0 (5.1–14.8)

 

Histology

FL

1.3 (0.6–2.8)

Not reached

0.427

MZL

 

11.0 (5.2–16.8)

 

Ann Arbor staging

St. I

0.9 (0.6–1.5)

11.0 (7.4–14.6)

0.751

St. II

 

Not reached

 

Extranodal

Yes

1.2 (0.6–2.7)

11.0 (4.5–17.5)

0.541

No

 

Not reached

 

RT as primary vs recurrent

Primary treatment

1.9 (0.7–5.1)

14.0 (8.3–19.7)

0.179

Recurrent treatment

 

10.0 (3.8–10.0)

 

Total dose of RT

 ≤ 36.0 Gy

1.4 (0.6–2.9)

14.0 (8.7–19.7)

0.425

 > 36.0 Gy

 

10.0 (4.9–15.1)

 

Technique of RT

3D/VMAT

0.3 (0.1–0.8)

14.0 (8.2–19.8)

0.059

2D

 

4.0 (1.1–6.9)

 

Radiation field

IFRT

1.3 (0.6–2.7)

Not reached

0.543

ISRT

 

10 (4.3–15.7)