Table 1.

Demographic data and lung cancer information divided by institution

VASDHSUCSDCytomyxTotal
Total numbers104 (100)221 (100)82 (100)407 (100)
Stage*
    I63 (61)98 (44)65 (79)226 (55)
    II11 (11)18 (8)15 (180)44 (11)
    III13 (12)53 (24)2 (3)68 (16)
    IV5 (5)15 (7)020 (6)
    Unknown12 (11)37 (17)049 (12)
Histology
    Adeno63 (60)93 (42)36 (44)192 (47)
    Squamous34 (33)113 (51)32 (39)179 (44)
    Large cell7 (7)15 (7)12 (15)34 (8)
    Unknown002 (2)2 (1)
Smoking
    Yes95 (91)186 (84)281 (69)
    No4 (4)20 (9)24 (6)
    Unknown5 (5)15 (7)82 (100)102 (25)
Sex
    Male104 (100)124 (56)54 (66)282
    Female097 (44)27 (33)124
Mean age ± SE (y)67 ± 162 ± 167 ± 164 ± 1
  • NOTE: Data are number (% column total) unless otherwise specified. Sex was unknown for one Cytomyx patient.

  • * P < 0.001 among the three institutions.

  • P < 0.01 among the three institutions.