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PMC full text:
Published online 2018 Jan 31. doi: 10.1038/s41598-018-20471-5

Table 1

Baseline patient characteristics.

Characteristics Training Set (n = 114) Validation Set (n = 176) P-value (Fisher test)
Sex
  Male59 (52%)94 (53%)0.81
  Female55 (48%)82 (47%)
Age at Treatment, yr, median (min-max)67 (42–84)68 (39–87)0.21*
Karnofsky performance status0.11
  70–100107 (94%)173 (98%)
  <707 (6%)4 (2%)
Tumor Histology0.04
  Adenocarcinoma/NOS63 (55%)119 (68%)
  Squamous51 (45%)57 (32%)
T Status0.005
  T134 (30%)84 (48%)
  T255 (48%)71 (40%)
  T3/425 (22%)21 (12%)
N Status0.35
  N079 (69%)131 (74%)
  N1/235 (31%)45 (26%)
Smoking Status0.003
  Never5 (4%)24 (14%)
  Former52 (46%)93 (53%)
  Current57 (50%)59 (34%)
Adjuvant Therapy0.002
  Yes49 (43%)45 (26%)
  No64 (57%)131 (74%)
Margin Status
  Close(<2 mm)/Positive7 (6%)9 (5%)0.79
  Negative107 (94%)167 (95%)

Abbreviations: NOS, not otherwise specified.

*T-test utilized.