Table 3.
Association between EBV status and patients’ baseline characteristics.
| Variable | Categories | EBV Status | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Negative | Positive | OR | 95%CI for OR | ||||||
| N | % | N | % | Lower | Upper | p-Value | |||
| Age (years) | ≤30 | 1 | 5.0 | 19 | 95.0 | 1.73 | 0.15 | 20.58 | 0.665 |
| 31–40 | 1 | 4.0 | 24 | 96.0 | 2.18 | 0.19 | 25.77 | 0.536 | |
| 41–50 | 1 | 2.5 | 39 | 97.5 | 3.55 | 0.30 | 41.36 | 0.313 | |
| 51–60 | 1 | 2.7 | 36 | 97.3 | 3.27 | 0.28 | 38.24 | 0.345 | |
| ≥61 | 2 | 8.3 | 22 | 91.7 | 1.00 | ||||
| Gender | Male | 1 | 0.9 | 107 | 99.1 | 16.21 | 1.83 | 143.74 | 0.012 * |
| Female | 5 | 13.2 | 33 | 86.8 | 1.00 | ||||
| Nationality | Saudi | 6 | 5.2 | 110 | 94.8 | 0.28 | 0.02 | 5.07 | 0.389 |
| Non-Saudi | 0 | 0.0 | 30 | 100.0 | 1.00 | ||||
| DM | No | 6 | 5.0 | 115 | 95.0 | 1 | 0.48 | ||
| Yes | 0 | 0.0 | 25 | 100.0 | 2.78 | 0.16 | 52.60 | ||
| HTN | No | 5 | 4.1 | 118 | 95.9 | 1 | 0.95 | ||
| Yes | 1 | 4.3 | 22 | 95.7 | 0.93 | 0.10 | 8.37 | ||
| Other diseases | No | 5 | 4.1 | 116 | 95.9 | 1 | 0.98 | ||
| Yes | 1 | 4.0 | 24 | 96.0 | 1.03 | 0.12 | 9.25 | ||
| Treatment protocol | RT | 0 | 0.0 | 2 | 100.0 | 0.88 | 0.03 | 29.14 | 0.944 |
| CCRT | 2 | 5.7 | 33 | 94.3 | 2.06 | 0.17 | 25.68 | 0.574 | |
| Induction + CCRT | 3 | 3.4 | 85 | 96.6 | 3.54 | 0.33 | 38.13 | 0.297 | |
| Palliative | 0 | 0.0 | 12 | 100.0 | 4.41 | 0.16 | 121.70 | 0.381 | |
| No treatment | 1 | 11.1 | 8 | 88.9 | 1.00 | ||||
N = Number, DM = diabetes mellitus, HTN = hypertension, Mets = metastasis, RT = radiation therapy, CCRT = concurrent chemoradiation therapy, OR = odd ratio, and CI = confidence interval. * Indicate significant p-values (p < 0.05).