Table 2. Correlation of pretreatment NLR with clinicopathological characteristics.
| Variables | N | Mean | SD | P value |
|---|---|---|---|---|
| Age (years) | 0.751 | |||
| ≤65 | 44 | 3.95 | 3.18 | |
| >65 | 21 | 3.7 | 2.32 | |
| Gender | 0.385 | |||
| Male | 31 | 3.54 | 2.48 | |
| Female | 34 | 4.17 | 3.27 | |
| Smoking | 0.001 | |||
| Never-smoker | 47 | 3.16 | 2.02 | |
| Current or ex-smoker | 18 | 5.74 | 3.99 | |
| Pathological type | 0.029 | |||
| Squamous carcinoma | 10 | 6.88 | 4.30 | |
| Adenocarcinoma | 55 | 3.32 | 2.24 | |
| TNM staging | 0.007 | |||
| Stage IIIB/IIIC | 13 | 2.78 | 0.73 | |
| Stage IVA/IVB | 52 | 4.14 | 3.19 |
NLR, neutrophil-to-lymphocyte ratio; SD, standard deviation.