Table 5.
Univariate Cox regression analysis of overall survival according to the conventional stage and the proposed new stage including SUVmax in esophageal squamous cell carcinoma.
| Variable | Categories | Hazard ratio | 95% confidence interval | p |
|---|---|---|---|---|
| 8th pathological stage | I | 1.000 | ||
| II | 1.341 | 0.934–1.926 | 0.112 | |
| III | 3.681 | 2.728–4.968 | <0.001 | |
| IV | 6.687 | 4.478–9.986 | <0.001 | |
| Proposed new stage (SUVmax, median cutoff) |
I (I with low SUVmax + II with low SUVmax) | 1.000 | ||
| II (I with high SUVmax + II with high SUVmax + III with low SUVmax) | 2.010 | 1.422–2.840 | <0.001 | |
| III (III with high SUVmax) | 4.805 | 3.517–6.564 | <0.001 | |
| IV | 7.837 | 5.220–11.767 | <0.001 | |
| Proposed new stage (SUVmax, best cutoff) | I (I with low SUVmax + II with low SUVmax) | 1.000 | ||
| II (I with high SUVmax + II with high SUVmax + III with low SUVmax) | 2.250 | 1.544–3.279 | <0.001 | |
| III (III with high SUVmax) | 5.474 | 3.806–7.872 | <0.001 | |
| IV | 9.473 | 6.048–14.839 | <0.001 |