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. 2017 Sep 14;8(6):620–629. doi: 10.1111/1759-7714.12497

Table 3.

Analyses of prognostic factors for progression free survival

Variables Two‐year PFS rate (%) P
Univariate Multivariate
Age (years)
≤60 vs. >60 14.0 vs. 69.1 0.059 0.082
Gender
Male vs. Female 51.5 vs. 53.3 0.710 0.914
Histology
AD vs. SqCC + other 54.2 vs. 48.9 0.598 0.489
Stage
I vs. II/IIIA 58.4 vs. 40.4 0.355 0.792
Recurrence interval
<12 vs. ≥12 months 33.3 vs. 60.7 0.117 0.128
Recurrent LN site
Station 2, 3, 5, 6, and SCLN vs. others 42.2 vs. 54.9 0.379 0.294
Recurrent LN number
Single vs. multiple 51.4 vs. 49.7 0.502 0.676
Recurrent LN size
<3 cm vs. ≥3 cm 62.3 vs. 14.6 0.013 0.030
Total dose (BED, Gy10)
≤75 vs. >75 27.8 vs. 56.8 0.318 0.889
Chemotherapy
RT + CTx vs. RT alone 61.7 vs. 38.7 0.352 0.730

Bold text signifies P < 0.05. AD, adenocarcinoma; BED, biologically equivalent dose; CTx, chemotherapy; LN, lymph node; PFS, progression‐free survival; RT, radiotherapy; SCLN, supraclavicular lymph node; SqCC, squamous cell carcinoma.