Characteristics | Treatment group | Control group | P value |
---|---|---|---|
Number | 21 | 61 | Â |
Age (years) | Â | Â | Â |
 Mean (Range) | 56.6 (32–74) | 56.4 (31–74) | 0.95 |
Gender | Â | Â | Â |
 Male | 19 (90.5 %) | 53 (86.9 %) |  |
 Female | 2 (9.5 %) | 8 (13.1 %) | 0.73 |
Clinical stage | Â | Â | Â |
 III | 10 (47.6 %) | 37 (60.7 %) |  |
 IV | 11 (52.4 %) | 24 (39.3 %) | 0.30 |
Tumor histology | Â | Â | Â |
 Adenocarcinoma | 8 (38.1 %) | 26 (42.6 %) |  |
 Squamous carcinoma | 13 (61.9 %) | 35 (57.4 %) | 0.72 |
Cycles of previous chemotherapy | 2.9 ± 0.7 | 3.1 ± 0.8 | 0.53 |
PS score | 0.4 ± 0.6 | 0.6 ± 0.7 | 0.35 |