Table 1.

Comparison of baseline factors for 265 patients with tubulin data and 216 patients without tubulin data

VariablePatients with tubulin data, n = 265Patients without tubulin data, n = 216P
Age (y)
    <61127 (47.9)114 (0.53)0.31
    ≥61138 (52.1)102 (0.47)
Sex
    Female95 (35.8)72 (33.3)0.63
    Male170 (64.2)144 (66.7)
T stage
    T130 (11.3)40 (18.5)0.03
    T2235 (88.7)176 (81.5)
N stage
    N0131 (49.4)88 (40.7)0.07
    N1134 (50.6)128 (59.3)
ECOG status
    0126 (47.6)110 (50.9)0.46
    1139 (52.4)106 (49.1)
Type of surgery
    Pneumonectomy63 (23.8)50 (23.1)0.45
    Lobectomy202 (76.2)164 (75.9)
    Segmentectomy0 (0)1 (0.05)*
Histology type
    Squamous97 (36.6)82 (38.0)0.89
    Adenocarcinoma143 (54.0)112 (51.9)
    Others25 (9.4)22 (10.2)
Ras mutation
    Absent198 (70.9)134 (72)0.44
    Present67 (29.1)50 (27)
    Uncertain0 (0)1 (5)
Treatment arm
    Observation125 (47.2)114 (52.8)0.22
    Chemotherapy140 (52.8)102 (47.2)
  • * One patient with no baseline data was excluded from the analysis.

  • For 31 of these 216 cases, tumor tissue was not available for Ras mutation status assessment.