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Results of both univariate (chi-square) and multivariate (binary logistic regression) statistical analysis
| Variables | Univariate analysis | Binary logistic regression analysis | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| OR | 95% CI | p | OR | 95% CI | p | |
|
| ||||||
| Heavy smoking | 3.028 | 1.392–6.587 | 0.004 | 3.192 | 1.432–7.115 | 0.005 |
| Previous RT to the larynx +/− neck | 3.945 | 1.495–10.410 | 0.007 | 4.281 | 1.552–11.807 | 0.005 |
OR: odds ratio; CI: confidence interval; RT: radiotherapy
