Table II.
Multivariate logistic regression analysis of risk factors for programmed death-ligand 1 expression in patients with esophageal squamous cell carcinoma.
| Variable | OR | 95% CI | P-value |
|---|---|---|---|
| Sex | 1.01 | 0.34–3.01 | 0.993 |
| Age | 1.33 | 0.61–2.91 | 0.473 |
| Smoking history | 1.25 | 0.60–2.61 | 0.553 |
| Alcohol consumption | 1.02 | 0.45–2.33 | 0.953 |
| Vessel invasion | 2.04 | 1.00–4.17 | 0.051 |
| T stage | 1.33 | 0.59–3.01 | 0.494 |
| N stage | 1.82 | 0.57–5.82 | 0.311 |
| TNM stage | 2.30 | 1.23–4.29 | 0.009 |
OR, odds ratio; CI, confidence interval; TNM, tumor-node metastasis; T stage, tumor stage; N stage, node stage.