Table 5.
Correlation between elevated tumour marker levels and involved lymph nodes
| Tumour marker level | No. of patients with involved lymph nodes | ||
|---|---|---|---|
|
| |||
| Negative | Positive | Total | |
| CYFRA 21-1 ≤ 5.0 and CEA ≤ 5.0a | 81 | 26 | 107 |
| CYFRA 21-1 > 5.0 or CEA > 5.0b | 14 | 18 | 32 |
| Total | 95 | 44 | 139 |
χ2 test was used to assess the difference between the CYFRA 21-1 ≤ 5.0 and CEA ≤ 5.0 group and the CYFRA 21-1 > 5.0 or CEA > 5.0 group; P = 0.0000. P values < 0.05 were considered statistically significant.
a
In the CYFRA 21-1 ≤ 5.0 and CEA ≤ 5.0 group, positive patients were considered to be those having all markers below the cutoff level.
b
While in the CYFRA 21-1 > 5.0 or CEA > 5.0 group, positive patients were considered to be those having at least one marker above the cut-off level.