Demographic and clinical features Treatment group Control group χ2 P value
Sex Male 13 13 0.00 1.00
Female 7 7
Age (years) <65 14 6 0.00 1.00
≥ 65 14 6
Stage IIIB 5 4 0.14 1.00
IV 15 16
KPS 60 ≤ KPS<80 8 5 1.03 0.50
80 ≤ KPS<100 12 15
Table 1: Characteristics of lung cancer patients enrolled: There were no significant differences in demographic or clinical characteristics between the two groups (P<0.05).